Catalog Number 621=691=086
9186 Oxygen Scavenger Analyzer
INSTRUMENT MANUAL
03/04 1ed
© Hach Company, 2004. All rights reserved.
eac/dp 03/04 1ed
Table of Contents
Section 1 Safety Precautions ....................................................................................................................................... 4
Use of Hazard Information............................................................................................................................................... 4
Precautionary Labels....................................................................................................................................................... 4
Section 2 Specifications ............................................................................................................................................... 5
Section 3 General Description ..................................................................................................................................... 6
3.1 Unpacking.................................................................................................................................................................. 6
3.2 Overview.................................................................................................................................................................... 6
3.3 Principle of Operation ................................................................................................................................................ 6
Section 4 Installation................................................................................................................................................... 10
4.1 Environmental Considerations................................................................................................................................. 10
4.2 General Installation Considerations......................................................................................................................... 10
4.3 Mounting the Instrument.......................................................................................................................................... 10
4.3.1 Attaching the Conditioning Bottle ................................................................................................................... 10
4.3.2 Installing the Reference Electrode ................................................................................................................. 12
4.3.3 Installing the In-line Filter ............................................................................................................................... 13
4.3.4 Connecting the Measuring Cell to the Transmitter ......................................................................................... 13
4.3.5 Choosing the Sample Line Location .............................................................................................................. 13
4.3.6 Connecting the Inlet Tubing............................................................................................................................ 13
4.3.7 Connecting the Outlet Tubing......................................................................................................................... 13
4.4 Electrical Connections ............................................................................................................................................. 15
4.4.1 Power Connections ........................................................................................................................................ 15
4.4.2 Electrostatic Discharge (ESD) Considerations............................................................................................... 16
4.4.3 Wiring the Instrument for Power..................................................................................................................... 17
4.4.4 Alarm Connections......................................................................................................................................... 18
4.5 Terminal Strip and Wiring Connections Descriptions .............................................................................................. 21
4.6 Using the Flow Meter............................................................................................................................................... 22
Section 5 Programming the Instrument .................................................................................................................... 23
5.1 Programming Overview ........................................................................................................................................... 23
5.2 Setting the Alarms ................................................................................................................................................... 26
5.2.1 Threshold Alarms........................................................................................................................................... 26
5.2.2 System Alarms............................................................................................................................................... 26
5.3 Temperature Compensation .................................................................................................................................... 27
5.3.1 Automatic Temperature Compensation .......................................................................................................... 28
5.3.2 Manual Temperature Compensation .............................................................................................................. 28
5.4 Programming mA Outputs ....................................................................................................................................... 28
5.5 Setting Up the Display ............................................................................................................................................. 29
5.6 Setting the Numeric Password (Code) .................................................................................................................... 30
5.7 Adjusting the mA Settings ....................................................................................................................................... 30
5.8 Setting Up the RS485 Outputs ................................................................................................................................ 30
5.9 Calculating the Average Concentration ................................................................................................................... 31
5.10 Identifying the Software Version ............................................................................................................................ 31
5.11 Loading Default Values.......................................................................................................................................... 31
5.12 Setting the Frequency of the Power Source .......................................................................................................... 32
5.13 Using the Maintenance Function ........................................................................................................................... 32
Section 6 Calibrating the Sensors ............................................................................................................................. 33
6.1 Calibrating the Temperature Sensor ........................................................................................................................ 33
6.1.1 Temperature Conversion Table ...................................................................................................................... 33
2
Table of Contents
6.4.4 Viewing Calibration History ............................................................................................................................ 36
6.4.5 Calibration-related Messages ........................................................................................................................ 36
Section 7 Maintenance................................................................................................................................................ 37
7.1 Scheduled Maintenance .......................................................................................................................................... 37
7.1.1 Refilling the pH Conditioner ........................................................................................................................... 37
7.1.2 Replacing the Tubing...................................................................................................................................... 37
7.1.3 Replacing the In-line Filter ............................................................................................................................. 37
7.2 Unscheduled Maintenance ...................................................................................................................................... 37
7.2.1 Replacing the Fuse ........................................................................................................................................ 37
7.2.2 Cleaning the Instrument................................................................................................................................. 38
7.2.3 Cleaning the Measuring Block ....................................................................................................................... 38
Section 8 Modbus Communication............................................................................................................................ 39
8.1 Introduction.............................................................................................................................................................. 39
8.2 Modbus Settings...................................................................................................................................................... 39
8.2.1 N .................................................................................................................................................................... 39
8.2.2 Baud............................................................................................................................................................... 39
8.2.3 Parity .............................................................................................................................................................. 39
8.2.4 Stop Bit .......................................................................................................................................................... 39
8.2.5 Swap Word..................................................................................................................................................... 39
8.3 Modbus Function Codes.......................................................................................................................................... 39
8.3.1 Read Input Registers—Function Code 03 ..................................................................................................... 40
8.4 Write Input Register—Function Code 06................................................................................................................. 40
8.4.1 Write Multiple Input Registers—Function Code 16 (10 Hex) ......................................................................... 41
8.5.2 Units Definition ............................................................................................................................................... 45
8.6 Network Connections .............................................................................................................................................. 46
8.6.1 RS485 Connections ....................................................................................................................................... 46
8.6.2 Terminator ...................................................................................................................................................... 46
Section 9 Troubleshooting.......................................................................................................................................... 47
9.1 Troubleshooting Error Messages ............................................................................................................................. 47
9.2 Detecting Electrical Faults ....................................................................................................................................... 48
Section 10 Parts and Accessories ............................................................................................................................. 49
Section 11 How to Order ............................................................................................................................................. 50
Section 12 Repair Service........................................................................................................................................... 51
Section 13 Warranty .................................................................................................................................................... 52
3
Section 1
Safety Precautions
Please read this entire manual before unpacking, setting up, or operating this instrument.
Pay particular attention to all danger and caution statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.
Do not use or install this equipment in any manner other than that which is specified in this manual.
Use of Hazard Information
If multiple hazards exist, this manual will use the signal word (Danger, Caution, Note) corresponding to the
greatest hazard.
DANGER
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate injury.
Note: Information that requires special emphasis.
Precautionary Labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if
not observed.
This symbol, if noted on the instrument, references the instruction manual for operation
and/or safety information.
This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical shock and/or
electrocution exists and indicates that only individuals qualified to work with hazardous voltages should
open the enclosure or remove the barrier.
This symbol, when noted on the product, identifies the location of a fuse or current limiting device.
This symbol, when noted on the product, indicates that the marked item can be hot and should not be
touched without care.
This symbol, when noted on the product, indicates the presence of devices sensitive to Electro-static
Discharge and indicates that care must be taken to prevent damage to them.
This symbol, when noted on the product, identifies a risk of chemical harm and indicates that only
individuals qualified and trained to work with chemicals should handle chemicals or perform maintenance
on chemical delivery systems associated with the equipment.
This symbol, if noted on the product, indicates the need for protective eye wear.
This symbol, when noted on the product, identifies the location of the connection for Protective Earth
(ground).
4
Section 2
Specifications
Specifications are subject to change without notice.
General
Controller Dimensions
14.4 cm x 14.4 cm x 11.9 cm (5.6 in. x 5.6 in. x 4.6 in.) (W x H x D)
Mounting
Pre-mounted on panel
Instrument Shipping Weight
4.1 kg (9 lb)
Sample Requirements
Sample Flow Rate to Analyzer
166 to 250 mL/min (10 to 15 L/h) recommended
Inlet Pressure to Instrument
0.5–6 bar (7–89 psi)
Sample Temperature Range
5–45 °C (41–113 °F)
Sample Inlet Tubing: at instrument ¼ in. OD
Drain Fitting
5/16
Application Sample
Industrial and boiler waters
in. OD
Electrical
Power Requirements
100–240 V ac ±10%; 90 VA, 50/60 Hz, 2 Amp fuse
Power Connection
Connection made to a three-position terminal block through one of four ½-inch conduit holes
in the case. Wire size: 12–18 AWG.
Installation Category
II
Alarm Contact Rating
Four relays (SPST) each rated at 3 A (resistive), 240 V ac maximum. The contacts are
unpowered.
Use either high voltage (greater than 30 V RMS and 42.2 V PEAK or 60 V dc) or low voltage
(less than 30 V RMS and 42.2 V PEAK or 60 V dc). Do not use a combination of high and low
voltage.
Alarm Connection
Connection made by four removable two-position terminals through one of four
½-inch conduit holes in the case. Wire size: 12–18 AWG.
Analog Output
Two isolated outputs, 0/4–20 mA. Maximum impedance 800 ohm.
Recorder Output Connections
Connection made to a terminal block through one of four ½-inch conduit holes in the case.
Wire size: 12–18 AWG.
Digital Output
RS485
Performance
Measurement Range
0–500 ppb dissolved N2H4, 0–100 ppb dissolved carbohydrazide
Repeatability
± 2% of measurement or 1 ppb, whichever is greater
Detection Limit
Drift is negligible; detection limit is 1ppb
Response Time @ 90%
< 60 seconds
Calibration
Electrical zero, set automatically or chemical zero with hydrazine-free water. Calibration of the
slope compared with a laboratory instrument.
Analog Outputs
Two 4–20 mA/0–20 mA, linear or bilinear
Environmental
Enclosure
IP65/NEMA 4x
Storage Temperature Range
–20 to 60 °C (–4 to 140 °F)
Operating Temperature Range
5–45 °C (41–113 °F)
Relative Humidity
10 to 90% non-condensing
Compliance
UL listed (E226594) to UL3101-1& CSA C22.2 No. 1010.1
5
Section 3
General Description
3.1 Unpacking
Remove the analyzer from its shipping carton and inspect it for any damage. If
damage is evident or the shipment is incomplete, please contact the Customer
Service Department, Hach Company, Loveland, Colorado for instructions. The
toll-free number is 800-227-4224.
3.2 Overview
The 9186 Oxygen Scavenger Analyzer (Figure 1 and Figure 2) is an on-line,
single-channel industrial analyzer that measures hydrazine or carbohydrazide in
boilers and other applications that require monitoring of oxygen scavengers at the
ppb and ppm levels.
This instrument uses a 3-electrode amperometric method to
measure concentration.
3.3 Principle of Operation
The 9186 Analyzer continuously measures the amount of oxygen scavengers,
dissolved hydrazine, and carbohydrazide in water. The measuring principle is
based on the electrochemical method of 3-electrode amperometry.
A polarization voltage (+480 mV) is applied between a platinum anode (working
electrode) and a stainless steel cathode (counter-electrode). The oxygen
scavenger is oxidized at the surface of the working electrode and the resulting
current is directly proportional to the oxygen scavenger concentration in the range
of 0 to 500 ppb N2H4 (Figure 3).
The reaction is enhanced in an alkaline environment, the sample is conditioned
before it enters the measuring cell. The sample is conditioned to pH ≥ 10.2 by
adding diethylamine, monoethylamine, ammonia, or diisopropylamine through a
Venturi tube. A sensor integrated to the measuring cell provides temperature
compensation.
The chemical reaction is as follows:
–
N 2 H 4 + 4OH → N 2 + 4H 2 O + 4e
–
The anode-cathode potential is kept constant with respect to a third electrode
(reference electrode, Ag/AgCl). This avoids interference effects resulting from
variations in water composition that appear when using the 2-electrode system.
At 480 mV, the cell current is linearly proportional to the hydrazine concentration
(Figure 4).
6
General Description
Figure 1
Front View
1
2
9100
R
0.065
ppm
23.2 °C
ClO2
Display 2
Menu
Esc
7
Enter
3
8
4
9
zero
on
off
10
5
6
l/h
WATER
15
10
5
min
M
1.
Analyzer (panel)
6.
Flow Meter (Cat. No. 694=000=001)
2.
Transmitter
7.
Measuring Cell (Cat. No. 09186=C=0100)
3.
Reference Electrode (Cat. No. 368429,00000)
8.
Venturi Block (Cat. No. 09186=C=0110)
4.
Counter Electrode
9.
J-shaped piece of Tubing (Cat. No. 09186=A=0200)
5.
Working Cell (Cat. No. 09186=A=0300) and Temperature
Electrode
10. Conditioning Bottle
7
General Description
Figure 2
Back View
1
0019
2
R
560.0
mpp
OlC
C° 2.32
uneM
2 yalpsiD
2
csE
R
Hach Company
5600 Lindberg Drive
P.O. Box 389
Loveland, CO 80539
U.S.A.
Type:
Model:
Serial No.:
ETL LISTED
UL STD 1262
H0492805390
CERTIFIED
CSA STD C22.2 NO.142
Made in the E.E.C.
3
8
4
5
9
6
7
1.
Analyzer (panel)
6.
Flow Regulator
2.
Transmitter
7.
Sample Inlet Connection
3.
AC Power Cord
8.
Drain Connection (Cat. No. 510100,01610) (must be a gravity drain)
4.
Sample line from flow controller to measuring cell
9.
Flow Meter
5.
In-Line Filter (Cat. No. 363877,06000)
8
General Description
Figure 3
Hydrazine Potential Intensity Curve
220
200
180
160
140
120
100
80
60
40
20
0
–20
0 ppb
Figure 4
90 ppb
180 ppb
270 ppb
360 ppb
Current vs. Hydrazine Concentration
100.00
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
0
20
40
60
80
100
120
140
160
180
200
ppb O2Red
9
Section 4
Installation
DANGER
This instrument should be installed by qualified technical personnel to ensure
adherence to all applicable electrical and plumbing codes.
4.1 Environmental Considerations
The instrument controller is designed for IP65, indoor/outdoor installation with an
ambient temperature between 5 to 45 °C (41 to 113 °F). Do not mount the
instrument in direct sunlight; shield from dripping water.
4.2 General Installation Considerations
Important Note: The gravity drain forces the fumes from the conditioning solution into the
air. Failure to provide a gravity drain can create a health hazard.
•
Place the analyzer in an accessible location.
•
Make the sample supply line as short as possible.
•
Ensure that there is no air intrusion into the sample supply line.
•
There must be a gravity drain.
4.3 Mounting the Instrument
DANGER
This analyzer is intended to be
used for water samples only.
4.3.1
Dimensions are given in millimeters and inches (see Figure 5 on page 11).
Attaching the Conditioning Bottle
CAUTION
To familiarize yourself with
handling precautions, dangers
and emergency procedures,
always review the Material Safety
Data Sheets prior to handling
containers, reservoirs, and
delivery systems that contain
chemical reagents and standards.
Protective eye wear is always
recommended when contact with
chemicals is possible.
1. Fill the Conditioning bottle with diisopropylamine (Cat. No. 2834453).
Note: The bottle that the DIPA comes in can be directly connected to the diffuser cap,
therefore decanting may not be necessary.
2. Insert the diffuser tube into the bottle and screw the bottle cap onto the bottle.
3. Place the Conditioning bottle into the basket as shown in Figure 8 on page 14.
4. Connect one end of the J-shaped ¼ in. tubing to the bottle cap. Connect the
other end to the Measuring Cell as shown in Figure 8 on page 14.
Note: Prior to adding conditioner, it is important to ensure a gravity drain is installed to
prevent back pressure that would cause the creation of amine fumes in the area.
Note: The reagent will last for 1–3 months. Make sure that the reagent (Monoethylamine,
diethylamine, or ammonia) levels remain above the indicator line shown on the
mounting panel. Other amines require periodic pH check to determine if 10.2 or higher
is maintained.
10
Installation
Figure 5
Panel Dimensions
300.0 mm
(11.81 inches)
15.0 mm
(0.60 inches)
Typical
228.0 mm (8.97 inches)
117.0 mm (4.60 inches)
270.0 mm
(10.62 inches)
9100
R
817.1 mm (32.17 inches)
3.17 mm (0.125 inches)
reference only
0.065
ppm
23.2 °C
ClO2
Display 2
Menu
787.0 mm (30.98 inches)
Esc
8.89 mm thru
( 0.35 inches)
4 holes
Enter
zero
on
off
l/h
WATER
15
10
5
min
M
15.0 mm (0.60 inches)
Typical
11
Installation
4.3.2 Installing the Reference Electrode
1. Place the seven small white Teflon®* beads through the hole at the top of the
measuring cell as shown in Figure 6. The beads provide better mixing and
self-cleaning.
2. Remove the reference electrode from its packaging.
3. Remove the red cap from the electrode.
4. Connect the male end of the electrode to the female end of the red connector
on the measuring cell.
5. Pull the electrode from the electrode storage bottle.
6. Screw the electrode into the hole at the top of the measuring cell.
Note: Replace the reference electrode yearly. See Section 7 on page 37.
Figure 6
Installing the Teflon Beads
2
1
3
4
1.
Reference Electrode (Cat. No. 368429,00000)
3.
Teflon Beads (Cat. No. 588801,75008)
2.
Reference Electrode Connector (Cat. No. 09186=A=0500)
4.
Measuring Cell (Cat. No. 09186=A=0100)
*Teflon is a registered trademark of Dupont Corporation.
12
Installation
4.3.3 Installing the In-line Filter
1. On the back of the panel, connect ¼ in. tubing to the elbow fitting on the top of
the measuring cell (see Figure 8).
Note: Rinse out sample system
before startup to prevent “crud
bursts” from clogging new filters.
2. Connect the other end of the tubing to one end of the filter. Make sure that the
filter is oriented with the arrow pointing up.
3. Connect another length of ¼ in. tubing to the bottom of the filter. Connect the
other end of the tubing to the elbow fitting on the right side of the pressure
regulator.
4.3.4 Connecting the Measuring Cell to the Transmitter
Insert the female end of the sensor connector into the 4-pronged connector at the
bottom of the measuring cell.
4.3.5 Choosing the Sample Line Location
Note: Erratic readings will occur if a
sample is drawn from a location that
is too close to points of chemical
additions to the process stream, if
mixing is inadequate, or if the
chemical reaction is incomplete.
Figure 7
Selecting a good, representative sampling point is important for optimum
performance of your instrument. The sample analyzed must be representative of
the condition of the entire system.
Install sample line taps into the side of larger process pipes to minimize the
chance of ingesting sediment from the pipe line bottom or air bubbles from the top.
A tap projecting into the horizontal center of the pipe is ideal.
Sample Line Location
Air (Typical)
Sediment (Typical)
Poor
Good
Poor
Best
4.3.6 Connecting the Inlet Tubing
1. Choose the sample line location as described above.
2. Connect the ¼ in. O.D. tubing to the lower left elbow fitting on the Pressure
Regulator as shown in Figure 8.
4.3.7 Connecting the Outlet Tubing
On the back of the panel, connect the 3/8-inch outlet tubing to the barbed fitting on
the back of the measuring cell. The tubing must not exceed 4 ft and it must drain
straight down.
13
Installation
Figure 8
Connecting the Outlet Tubing
1
2
9100
R
0019
0.065
ppm
23.2 °C
ClO2
Display 2
Menu
Esc
R
560.0
mpp
8
OlC
C° 2.32
uneM
2 yalpsiD
2
Enter
csE
R
Hach Company
5600 Lindberg Drive
P.O. Box 389
Loveland, CO 80539
U.S.A.
Type:
Model:
Serial No.:
ETL LISTED
UL STD 1262
H0492805390
CERTIFIED
CSA STD C22.2 NO.142
9
Made in the E.E.C.
3
10
4
15
11
12
5
zero
on
off
13
6
7
16
14
l/h
WATER
15
10
5
min
M
1.
Analyzer (panel)
9.
2.
Transmitter
10. J-shaped tubing
3.
Reference Electrode
11. Bottle Cap with diffuser
4.
Counter Electrode
12. Conditioning Bottle in the basket
5.
Working Cell and Temperature Electrode
13. In-Line Filter
6.
Sensor Connector (to transmitter)
14. Pressure Regulator
7.
Flow Meter
15. Barbed Fitting for 3/8-inch atmospheric drain tubing
8.
Measuring Cell
16. Flow Meter
14
Venturi Block
Installation
4.4 Electrical Connections
DANGER
A qualified technician should make all electrical connections to ensure compliance
to all applicable electrical codes. If permanent connection (conduit) is required to
meet UL, CSA and other applicable instrument safety standards, an external power
disconnect switch must be installed. This power disconnect switch should be
located near the instrument.
4.4.1
Power Connections
The product enclosure is rated IP65; however, achieving this protection level
depends on the use of proper hardware in the installation of this product.
NEMA-approved conduit hardware is recommended. Select the style of conduit
hardware that will seal to the enclosure wall when using flexible or rigid conduit.
Remember to follow all local electrical codes for your area.
Note: Power feeds (ac) to the
instrument which are not contained
in properly grounded metal conduit
can be a source of instrumentation
upset or failure if surge or transient
disturbance levels exceed those
levels specified for industrial type
products.
For process or industrial applications, the national electrical codes of most
countries require that ac service needs be hard-wired and contained in conduit
systems. This instrument has been designed to conform to this requirement. Hach
Company recommends conduit for two reasons:
Note: If power cords are allowed by
local electrical code, a 125V
UL/CSA approved power cord with
an approved NEMA-style strain
relief and a standard 115V North
American-style plug
(Hach Cat. No. 46306-00) or a
230V VDE-approved power cord
with an approved NEMA-style strain
relief and a Continental Europeanstyle plug (Hach Cat. No. 46308-00)
can be ordered.
Electrical and instrumentation standards require a local means of removing power
from the product. Since this instrument does not have an on/off switch, the
customer must provide one. This may be accomplished with a customer-supplied
power cord or switch box (see Figure 9 and Figure 10). A power cord method is
only acceptable if local codes permit and the considerations outlined in this
section are addressed.
1. It is generally required by most local electrical codes.
2. Use of metal conduit can improve immunity to lightning surges and ac power
transients.
In hard-wired electrical applications the power and safety ground service drops
should be no longer than 6 meters (20 feet) unless metal conduit is used to shield
the ac power wiring. The wire should be no smaller than 14 gauge.
In applications where power cords are allowed and power surges and transients
are not a great concern, an 18 gauge, 3-conductor power cord (including a safety
ground wire) can be used, but its length must not exceed 3 meters (10 feet).
Power connections are made at the terminal strip that is accessible when the front
cover and internal shielding are removed. Use only provided cord connected
strain reliefs to ensure sealing and protection against dust and moisture. Use
NEMA sealing hardware as appropriate (see Figure 11).
A power source with 100–240 V ac ± 10% is acceptable for this instrument. The
power supply terminal strip can be removed from its housing for connections. For
best results, electrical connections must always remain dry and clean in order to
ensure reliable instrument operation. Ensure that the cables are positioned
correctly when opening the transmitter.
15
Installation
Figure 9
Connecting ac Power with Customer-supplied Power Cord
1
RE1
V1
V2
RE2
D2
D1
K2
J1
RE3
D3
D4
RE4
V3
P1
V4
IC1
C8
Temp +
L2
Temp –
Model : 09125-A-2000
Serial No : 0104 549
C6
K9
Ref
Counter
Ind : D
Vac : 100 - 240 V
Work
RP2
K6
Z6
Aux
J1
Wiring located behind the guide plate shall be
rated at 80 C (176 F) or higher.
K5
9180
AMP
V1.03
Ic4
IC2
RP1
K4
2
1.
Power Terminal
Figure 10
2.
Power Cord Strain Relief
Connecting ac Power with Customer-supplied Switch Box
1
RE1
V1
V2
RE2
D2
D1
K2
J1
RE3
D3
D4
RE4
V3
P1
V4
IC1
C8
Temp +
L2
Temp –
C6
K9
Ref
Counter
Model : 09125-A-2000
Serial No : 0104 549
Ind : D
Vac : 100 - 240 V
Work
RP2
K6
Z6
Aux
J1
Wiring located behind the guide plate shall be
rated at 80 C (176 F) or higher.
K5
Ic4
9180
AMP
V1.03
IC2
RP1
K4
2
1.
Power Terminal
4.4.2
Conduit Strain Relief
Electrostatic Discharge (ESD) Considerations
Important Note: The analyzer
circuit board components are
EXTREMELY sensitive to static
electricity damage in a powered or
unpowered state. Do not touch
circuit boards or its components
without wearing a grounded wrist
strap.
16
2.
Delicate internal electronic components can be damaged by static electricity,
resulting in degraded instrument performance or eventual failure. Take the
following steps to prevent ESD damage to the instrument:
•
Before touching any instrument electronic components (such as printed circuit
cards and the components on them) discharge static electricity from your
body. This can be accomplished by touching an earth-grounded metal surface
such as the chassis of an instrument, or a metal conduit or pipe.
Installation
4.4.3
•
To reduce static build-up, avoid excessive movement. Transport staticsensitive components in anti-static containers or packaging.
•
To discharge static electricity from your body and keep it discharged, wear a
wrist strap connected by a wire to earth ground.
•
Handle all static-sensitive components in a static-safe area. Use anti-static
floor pads and work bench pads.
Wiring the Instrument for Power
Use a 3-wire, single-phase power supply with an appropriate cross-section for
the required power. Connect to the instrument power terminal as follows:
DANGER
This instrument should be
installed by qualified technical
personnel to ensure adherence to
all applicable electrical codes.
1. Remotely disconnect instrument power before opening the analyzer door.
2. Remove the four screws from the front cover. Open the cover. Remove the
internal shielding plate (4.4.3).
3. Strip the outside insulation of each wire back ¼-inch (Figure 12).
4. Route the wires or approved power cord through the back right conduit
opening. Use the provided cord-connected strain reliefs to ensure adequate
sealing. Use appropriate NEMA sealing hardware (4.4.3 on page 17).
5. Using the connection diagram on the shield plate, insert the wire ends into the
mains connector until the insulation seats against the connector (Figure 12).
6. Tighten the connectors using a small flat-head screwdriver. Firmly tug each
wire to ensure solid connections.
7. Reinstall the shielding plate and front cover if all of the wiring is complete.
Figure 11
Using the Optional Strain Relief and Conduit Hole Sealing Plug
3
2
1.
Power cord strain relief
2.
Conduit strain relief
3.
Conduit hole sealing plug
17
Installation
Figure 12
Removing the Shielding Plate
1
K2
RE1
V1
V2
RE2
D2
D1
Amperometry 9180
Serial N°:
J1
2
RE3
Temp +
L2
Temp –
K9
Ref
Counter
Work
RP2
Z6
Aux
J1
K6
Amp. module
C6
+
+
Model : 09125-A-2000
Serial No : 0104 549
Ic4
I2
RP1
+V
GND
–V
S4/Timer
Ind : D
3
PE
N
L
under shielding plate
50/60Hz 25VA
Vac: 100 – 240
Caution: For continued protection
against risk of fire, replace only
with same type and rating fuse.
K4
1.
Shielding Plate
2.
Thumbscrew (loosen to remove shield)
Figure 13
S2
S3/Sys.Alarm
Temp +
Temp –
T 2A L
Vac : 100 - 240 V
Ref.
GND
F1
Counter
Wiring located behind GND
the guide plate shall be
Work
rated at 80
C (176 F) or higher.
250V
Aux
Preamp.
Supply
IC2
S1
I1
K5
9180
AMP
V1.03
V4
Relays
D3
D4
RE4
IC1
RX/TX +
RX/TX –
Shield
Mains
C8
Analog Serial com.
Outputs (option)
V3
P1
3.
Ground stud (pulls the shield out of the instrument)
Proper Wire Preparation and Insertion
Mains
PE
N
L
1
1.
Strip ¼-inch of insulation.
2.
2
Seat insulation against connector with no bare wire exposed.
4.4.4 Alarm Connections
DANGER
The relay connection area is
designed for only high voltage
(100–240 V ac) connections. A
shock hazard can exist if low
voltage (<30V) connections are
simultaneously made in the relay
connection area.
The product enclosure is IP65; however, achieving this protection level depends
on the use of proper hardware during installation. Use standard off-the-shelf
NEMA-approved conduit hardware. Take care to select the style of conduit
hardware that will seal to the enclosure wall when using flexible or rigid conduit.
Note: Current to the relay contacts
must be limited to 3 amps resistive.
Local removal of power from the
relays must be available in case of
emergency or for servicing the
product. If the relay contacts are
supplied with greater than 30 Volts,
power removal can be made with an
external switch and a 3-amp fuse or
with a switched 3-amp circuit
breaker.
1. Remotely disconnect all instrument power before opening the analyzer door.
18
The analyzer contains four unpowered alarm relays (3 A resistive,
100–230 V ac) designed for use with high voltage (greater than 30V-RMS). The
Normally Open and Common relay contacts are connected when an alarm
condition is active. The relay connector accepts 18–12 AWG wire. Determine wire
gauge based on load application. Less than 18 AWG is not recommended.
2. Strip the insulation on each wire back ¼-inch.
3. Remove the front cover. Remove the shielding plate inside the instrument.
4. Route the wire through the back right conduit opening. Use the provided
cord-connected strain reliefs. Use appropriate NEMA sealing hardware.
5. Insert the wire ends into the connector until the insulation seats against the
connector. Refer to Figure 14 and Table 1 on page 21.
Installation
6. Tighten the connectors using a small flat-head screwdriver. Firmly tug on
each wire to ensure solid connections.
Note: Primary components may
become hot under high line voltage
and ambient temperature
conditions. ac wiring insulation must
be rated a minimum of 95 °C.
7. Reinstall the shielding plate and front cover if all of the wiring is complete.
8. See section 5.2 on page 26 for information on setting alarms.
Figure 14
Relays Terminal Strip
RE1
V1
V2
RE2
D2
D1
K2
J1
RE3
D3
D4
RE4
V3
P1
Relays (S1– S4)
V4
IC1
S1
C8
Temp +
L2
Temp –
K9
Ref
C6
Counter
Model : 09125-A-2000
Serial No : 0104 549
Ind : D
Vac : 100 - 240 V
S2
Work
RP2
Aux
J1
K6
Z6
Wiring located behind the guide plate shall be
rated at 80 C (176 F) or higher.
K5
Ic4
S3/Sys. Alarm
9180
AMP
V1.03
IC2
RP1
K4
S4/Timer
4.4.5 Analog and RS485 Output Connections
This transmitter is designed for either a 4–20 or 0–20 mA output with a maximum
800 ohm load. Make output connections with twisted-pair shielded wire. Connect
the shield at the recorder or controlled component end only. On the opposite end,
remove the shield and insulate the remaining wires.
Note: The RS485 card is factory
installed, it does not need to be
re-installed.
1. Remotely disconnect all instrument power before opening the analyzer door.
2. Remove the front cover.
3. Strip the insulation on the outer jacket back 7 inches. Remove the conductors
from the shield.
4. Cut the shield to 1 inch. Connect it to the ground on the shielding plate.
Note: Use a twisted-pair, shielded
cable. Use of non-shielded cable
may result in radio frequency
emission or susceptibility levels
higher than allowed.
5. Strip the insulation on the remaining wires back ¼-inch.
6. Route the wire through the front left conduit opening. Use the provided
cord-connected strain reliefs to ensure adequate sealing. Use appropriate
NEMA sealing hardware.
7. Insert the wire ends into the Analog or RS485 connector until the insulation
seats against the connector. Refer to 4.5 and Table 1 on page 21.
8. Tighten the connectors using a small flat-head screwdriver. Firmly tug on
each wire to assure solid connections.
9. Reinstall the shielding plate and front cover if all of the wiring is complete.
19
Installation
Figure 15
Analog and RS485 Terminal Strips
1
2
3
RE1
V1
V2
RE2
D2
D1
K2
J1
RE3
D3
D4
RE4
V3
P1
V4
IC1
C8
Temp +
L2
Temp –
C6
K9
Ref
Counter
Model : 09125-A-2000
Serial No : 0104 549
Ind : D
Vac : 100 - 240 V
Work
RP2
Z6
Aux
J1
K6
Wiring located behind the guide plate shall be
rated at 80 C (176 F) or higher.
K5
Ic4
9180
AMP
V1.03
IC2
RP1
K4
1.
RS485 Circuit Card
3.
Analog Connections
2.
Headers for mounting RS485 Circuit Card
4.
K9–Shield Connections
4.4.6 Sensor Connections
To reattach the sensor cable:
1. Remotely disconnect all instrument power before opening the analyzer door.
Remove the front cover.
2. Route the probe cable through the front right conduit opening. Use the
provided cord-connected strain reliefs to ensure adequate sealing. Use
appropriate NEMA sealing hardware.
3. Insert the wire ends into the “amp module” connector until the insulation seats
against the connector. Refer to Figure 16 and Table 1 on page 21.
4. Tighten the connectors using a small flat-head screwdriver. Firmly tug on
each wire to assure solid connections.
5. Reinstall the shielding plate and front cover if all of the wiring is complete
20
Installation
Sensor Terminal Strip
2
3
K2
Amperometry 9180
Serial N°:
RE1
V1
V2
RE2
D2
D1
Figure 16
J1
RE3
L2
1
K9
Ref
C6
Counter
Work
RP2
Z6
Aux
J1
K6
Amp. module
Temp –
V4
+
+
Model : 09125-A-2000
Serial No : 0104 549
Ic4
Preamp.
Supply
IC2
1.
Amp. module Connector
2.
RP1
S2
S3/Sys.Alarm
I1
S4/Timer
I2
Ind : D
Temp +
Temp –
T 2A L
Vac : 100 - 240 V
Ref.
GND
F1
Counter
Wiring located behind GND
the guide plate shall be
Work
rated at 80
C (176 F) or higher.
250V
Aux
K5
9180
AMP
V1.03
S1
Relays
D3
D4
RE4
IC1
RX/TX +
RX/TX –
Shield
+V
GND
–V
Mains
C8
Temp +
Analog Serial com.
Outputs (option)
V3
P1
PE
N
L
under shielding plate
50/60Hz 25VA
Vac: 100 – 240
Caution: For continued protection
against risk of fire, replace only
with same type and rating fuse.
K4
Shield Connections
3.
Ground Stud
4.5 Terminal Strip and Wiring Connections Descriptions
Table 1 Terminal Strip and Wiring Descriptions
Terminal Strip
Description
Wiring
Analog Outputs
RS485
#1
#2
RX/TX [+]
RX/TX [–]
0–20 mA or 4–20 mA [+]
0–20 mA or 4–20 mA [–]
0–20 mA or 4–20 mA [–]
0–20 mA or 4–20 mA [+]
Amperometric Module (Measuring Board)
Temperature Sensor [+]
Temperature Sensor [–]
Reference when using the 3 electrodes
Counter-electrode (anode)
Working electrode (cathode)
pH Auxiliary input
External shield–long white cable
Internal Shielding
White–18 AWG
ac Power Supply
Main power supply. 100–240 V ac 50/60 Hz
Green/Green-yellow
White/Blue
Black/Brown
Relays
Alarm 1. Simple contact
Alarm 2. Simple contact
Alarm 3 or system alarm. Simple contact.
Alarm 4 or timer. Simple contact.
user
user
user
user
user
user
black (18 AWG)
blue (18 AWG)
Transparent wire
grey (18 AWG)
white (18 AWG)
Not used
white (16 AWG)
temp [+]
temp [–]
ref
counter
work
aux
shielding plate
GND
GND (PE)
neutral (N)
hot (L)
user
user
user
user
21
Installation
Figure 17
Terminal Strip And Circuit Board Descriptions
4
5
6
RE1
V1
V2
RE2
D2
D1
K2
J1
3
RE3
D3
D4
RE4
V3
P1
7
V4
IC1
C8
Temp +
L2
Temp –
C6
K9
Ref
Counter
2
Model : 09125-A-2000
Serial No : 0104 549
Ind : D
8
Vac : 100 - 240 V
Work
RP2
Z6
Aux
J1
K6
Wiring located behind the guide plate shall be
rated at 80 C (176 F) or higher.
K5
1
Ic4
9180
AMP
V1.03
IC2
RP1
K4
1.
K5- Not used with Hydrazine
5.
K9-Internal Shield Connections
2.
J1- Working Cell and Counter Electrode Connections
6.
Fuse Holder (F1, T, 2A, L, 250V)
3.
Analog Outputs
7.
S1-S4 (relays, alarm and timer connections)
4.
P1 (contrast adjustment)
8.
ac Power Connections
4.6 Using the Flow Meter
When all plumbing and electrical connections are made, slowly open the supply
valve to the inlet tube. Rotate the dial marked M to adjust the flow rate through the
analyzer. The flow rate MUST be stable, and between 10-15 L/hr. Fluctuations in
the flow rate will cause fluctuations in the reading on the display.
4.7 Powering On the Analyzer
Confirm that the site voltage corresponds to that stated on the instrument
identification plate. Turn on power to the transmitter. The transmitter performs a
self-test and displays an initial value.
22
Section 5
Programming the Instrument
5.1 Programming Overview
Figure 18
9186 Display and Keypad
1.
ESC
Cancels an operation or returns to the next level up.
2.
LEFT ARROW
Validates a selection and passes on to the next step.
3.
RIGHT ARROW
Takes the action as indicated above the key. The action changes depending on the display and menu.
4.
ENTER
Validates the selection indicated above the key. The action changes depending on the display and menu.
On initial startup the instrument will display the Main Screen (see Figure 18).
Note: If a key is not pressed after
10 minutes, the transmitter returns
to the main display.
•
In the Main Screen, use the LEFT ARROW key to view one of the
Display 2-4 Menus.
•
Display 2 can be programmed to show sample concentration, sample
temperature, and diffusion current.
•
Display 3 shows the status of programmed alarms.
•
Display 4 shows a bar graph of the current analog outputs.
•
In the Main Screen, use the RIGHT ARROW key to view the Menu screen.
•
In the Menu screen, use the LEFT ARROW to navigate through the menu
selections (programming, calibration, maintenance, and service) and press
ENTER to view. Press ESC to go back to the previous screen. Press the LEFT
ARROW key to scroll through the menu. See Table 2 for a list of programming
options for each menu selection.
•
Use the RIGHT ARROW key to scroll through the list of possible values.
•
To change a numeric value, select the value with the LEFT ARROW key. Press
the RIGHT ARROW key to highlight and change the leftmost digit. Press
ENTER to accept the change and move to the next digit to the right.
23
Programming the Instrument
•
Use the RIGHT ARROW key to change additional digits as needed. Press
ENTER as many times as needed to accept the value.
Table 2 Display 2 Menu
Function
Displays
Values
NTC
SENSOR
MEASURE
AD590
TEMP. COMP.
Auto
TYPE
Manual
Conc
AFFECT:
°C
No
LIM:
ALARMS
ALARMS 1–4
(Set value)
Down
DIR:
Up
DELAY:
(Set value)
HYST:
(Set value)
NO
RELAY:
NC
Conc
AFFECT:
mA
°C
PROGRAMING
OUTPUT 1 & 2
4–20
TYPE:
0–20
Lin
MODE:
Dual
LOW:
(Set value)
UP:
(Set value)
Last
MAINTENANCE
mA OUTPUTS
MODE:
Present
Live
Last
CALIBRATION
MODE:
Present
Live
SPECIAL PROGRAM
Last
SYSTEM ALARM
MODE:
Present
Live
Last
TIMER
MODE
Present
Live
TEST
24
VALUE
(Set value)
Programming the Instrument
Table 2 Display 2 Menu (continued)
Function
Displays
Values
N:
BAUD:
PROGRAMMING
RS485
PARITY
STOP BIT:
CONC. CALIB.
CALIBRATION
ZERO
(Set value)
—
(Set value)
—
No
—
ODD
—
EVEN
—
(Set value)
ElecAuto
PROGRAMMING
Chemical
EXECUTION
SLOPE
EXECUTION
TEMP. CALIB.
EXECUTION
—
PARAMETERS
DISPLAYS PARAMETERS
—
HISTORIC
DISPLAYS HISTORIC VALUES
—
MAINTENANCE
SERVICE
—
Enter password if necessary
AVERAGE
AVERAGE
(Set value)
TEST
ppb/ppm
CONC:
µg–mg/L
°C
TEMP:
°F
DISPLAY
GB
D
LANGUAGE:
Sp
I
F
SERVICE
CALIB:
CODE
(Set value)
PROG:
(Set value)
SERVICE:
(Set value)
SOFT ISSUE
DEFAULT VAL.
ADJUST mA
YES
OUPUT 1
VALUE:
(Set value)
OUTPUT 2
VALUE:
(set value)
CONFIGURATION
FREQ:
(Set value)
POLYMETRON
CODE:
(Set value)
25
Programming the Instrument
5.2 Setting the Alarms
Relays S1 and S2 may be assigned as threshold alarms. Relay S3 can be
assigned as a threshold system alarm. Relay S4 can be assigned as a threshold
alarm or relay timer.
1. From the Main screen, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight PROGRAMMING. Press ENTER.
3. Use the LEFT ARROW key to highlight ALARMS. Press ENTER.
4. Use the LEFT ARROW key to highlight an alarm. Press ENTER.
5. Set the alarm parameters using Table 3 and Table 4.
5.2.1 Threshold Alarms
The alarm relays are activated if the measured value matches the programmed
limit and meets the high or low alarm condition.
Table 3 Threshold Alarms
AFFECT
LIM
DIRECTION
Conc. No °C/°F
xxxx
Up/Down
Used to select a temperature or concentration threshold. Select No when the relay is not used.
Used for entering the setpoint value.
Select the up or down direction (high or low alarm).
DELAY
xxxs
Time delay in seconds prior to relay triggering
HYST.
XX%
Definition of threshold hysteresis in % (max. 10%). Hysteresis only functions on the set point. It is
located below the set point for the upper alarm and above the set point for the lower alarm.
RELAYS
NO/NC
Relay normally open (NO) or normally closed (NC).
5.2.2 System Alarms
The S3 relay can be used to indicate a malfunction detected by the analyzer. We
recommend connecting the S3 relay to an external alarm device to warn the
operator of an alarm condition.
When an alarm occurs, the S3 relay is activated. In the event of manual
acknowledgment to the external alarm device, the relay remains activated even if
the fault is resolved. Press ENTER to deactivate the relay and accompanying error
message. In the event of automatic acknowledgement, the relay and message are
deactivated once the alarm trigger disappears.
Table 4 Alarm 3 (System Alarm)
MODE
No Threshold System
Choose a threshold function or a system alarm function.
ACCEPT
Auto/Manual
Choose manual (ENTER key) or automatic alarm acknowledgement.
RELAYS
NO/NC
Select normally open or normally closed.
26
Programming the Instrument
5.2.3 Setting the Timer
The S4 relay can be used for cyclical operation. The operating cycle is defined
using Table 5 and Figure 19.
Table 5 Alarm 4 (TImer)
MODE
No Limit Timer
Choose between a threshold function (see Table 3) or a timer function.
INTERV
XXXXmn
Set the time interval between two active cycles (minutes).
Nb IMPUL.
X
Define the number of impulses during the active cycle.
Ton
XXXs
Set the activation time (seconds) for each impulse.
Toff
XXXs
Set the deactivation time (seconds) for each impulse.
TmA
XXmn
Set the holding time for analog outputs at the end of each cycle.
Figure 19
Timer Operating Cycle
S4 relay
Number of impulses (5)
Closed
Open
Time
T mA (5 min)
Ton (5 s)Toff (3 s)
Interval (1440 min)
Note: When using S4 relay as a Timer, a countdown is displayed for the start of the relay
execution cycle. It is expressed in hours: minutes, with the exception of the last ten
minutes, where it is expressed in hours: minutes: seconds.
5.3 Temperature Compensation
Table 6 Temperature Compensation
Sensor
NTC AD590
Type of temperature sensor. The NTC (default value) is pre-programmed.
TYPE
Auto/Manual
Select a temperature measurement with automatic or manual compensation.
If you select manual temperature compensation, the TEMP. CONTROL menu is no longer
available.
TEMP.
xx.x °C
Used for entering the sample temperature during manual compensation.
27
Programming the Instrument
5.3.1 Automatic Temperature Compensation
The sensor continuously measures the sample temperature. Concentration values
are automatically converted to a reference temperature of 25 °C. To set Automatic
Temperature Compensation:
1. From the Main screen, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight PROGRAMMING. Press ENTER.
3. Use the LEFT ARROW key to highlight MEASURE. Press ENTER.
4. Press ENTER to select TEMP. COMP.
5. In the TYPE field, select Auto with the RIGHT ARROW key.
6. Press ESC to exit.
5.3.2 Manual Temperature Compensation
1. From the Main display, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight PROGRAMMING. Press ENTER.
3. Use the LEFT ARROW key to highlight MEASURE. Press ENTER.
4. Press ENTER to select TEMP. COMP.
5. In the TYPE field, select MANUAL with the RIGHT ARROW key.
6. Enter the sample temperature. Press ESC when finished. Press ENTER until
the next menu option is highlighted.
5.4 Programming mA Outputs
The signals generated by the analog outputs allow measurement data to be
transmitted to any external control or recording device.
1. From the Main display, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight PROGRAMMING. Press ENTER.
3. Use the LEFT ARROW key to highlight mA OUTPUTS. Press ENTER.
4. Use the LEFT ARROW key to highlight OUTPUT 1, OUTPUT 2, SPECIAL
PROG, or TEST.
5. Program the parameters using Table 7.
28
Programming the Instrument
Table 7 mA Outputs Programming Parameters
Outputs 1/2
AFFECT
Conc. µA °C/°F
Used to determine whether the analog output is assigned to current, concentration, or
temperature measurement.
TYPE
0/20 or 4/20
Used to select the analog output range.
MODE
Lin or Bi-lin
Choose a linear or bi-linear scale (see Figure 20).
LOW
XXXX
Scale starting value
MIDDLE
XXXX
Scale middle value (bi-linear)
UP
XXXX
Scale ending value
MODE
Preset/Last/Live
Action of the analog output during calibration, system alarm, maintenance, or active
timer cycles:
Return to a preset value
Return to the last value before the event
Live = live measurement
VALUE
XX
Used to define the return value (0–21 mA)
TEST
Used to test analog outputs in 1 mA steps (0–21 mA)
Special Program
Figure 20
Linear and Bi-linear Output Loops
20
Linear
(mA)
Bi-linear
4
0
10
20
30
40
50
60
70
80
90 100
(%)
5.5 Setting Up the Display
Note: The factory-defined
programming language is English.
The instrument will revert to English
after a software upgrade or when
the default values are restored.
1. From the Main display, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight SERVICE. Press ENTER.
3. Use the LEFT ARROW key to highlight DISPLAY. Press ENTER.
4. Program the parameters using Table 8.
29
Programming the Instrument
Table 8 Display Programming Parameters
CONC
ppb/ppm
µg/L–mg/L
% Saf
Select the concentration
TEMP.
°C
°F
Select the temperature unit.
F (French)
GB (English)
LANGUAGE
D (German)
Select the language.
SP (Spanish)
I (Italian)
5.6 Setting the Numeric Password (Code)
1. From the Main display, push the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight SERVICE. Press ENTER.
3. Use the LEFT ARROW key to highlight CODE. Press ENTER.
4. Enter the four-digit protection codes for the PROGRAMMING, CALIBRATION
and SERVICE menus, respectively. Deactivate the codes by entering 0000 in
the code field.
5. If you forget a protection code, press ESC and ENTER simultaneously to
access the menu without inputting a code.
5.7 Adjusting the mA Settings
The analog output values are factory set to 4–20 mA. However, the 20 mA can be
adjusted on the outputs, following the steps below:
1. Connect an ammeter to the terminals of the analog outputs.
2. From the Main screen, push the RIGHT ARROW key.
3. Use the LEFT ARROW key to highlight SERVICE. Press ENTER.
4. Use the LEFT ARROW key to highlight ADJUST mA. Press ENTER.
5. Use the LEFT ARROW key to highlight Output 1 or Output 2.
6. Adjust the value until 20.0 mA is displayed on the ammeter.
5.8 Setting Up the RS485 Outputs
The RS485 board connects the analyzer to a digital communication system. The
communication protocol used is MODBUS/JBUS. See Section 8 on page 39 for
more information.
1. From the Main screen, push the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight PROGRAMMING. Press ENTER.
30
Programming the Instrument
3. Use the LEFT ARROW key to highlight RS485. Press ENTER.
4. Program the parameters using Table 9.
Table 9 RS485 Outputs Programming Parameters
Display
Value
Description
N°
91XX
Model number (0–32)
BAUD
300, 600, 1200, 2400, 4800, 9600
No
PARIT.
Transmission speed in bauds
No parity bit
Even
With even parity bit
Odd
With off parity bit
STOP BIT
1
1 stop bit
2
2 stop bits
5.9 Calculating the Average Concentration
1. From the Main display, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight SERVICE. Press ENTER.
3. Use the LEFT ARROW key to highlight AVERAGE. Press ENTER.
Table 10 Calculating Average Concentration
AVERAGE
Used to program a sliding mean for concentration measurement.
AVERAGE X
Number of measurements taken for mean calibration.
TEST
Used to view the difference between a measurement with or without mean.
5.10 Identifying the Software Version
1. From the Main display, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight SERVICE. Press ENTER.
3. Use the LEFT ARROW key to highlight SOFT. ISSUE. Press ENTER.
This menu displays the software version number.
5.11 Loading Default Values
1. From the Main display, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight SERVICE. Press ENTER.
3. Use the LEFT ARROW key to highlight DEFAULT VAL. Press ENTER.
4. Press Yes. You will reload the default values and will lose any programmed
values, along with calibration parameters.
31
Programming the Instrument
5.12 Setting the Frequency of the Power Source
1. From the Main display, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight SERVICE. Press ENTER.
3. Use the LEFT ARROW key to highlight CONFIGURATION. Press ENTER.
4. Choose the frequency of your power source. Press ESC to return to Display 2.
5.13 Using the Maintenance Function
Use this function during all instrument maintenance operations. The Instrument
will continue to display the measured values, but the outputs and relays
are frozen.
1. From the Main display, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight MAINTENANCE. Press ENTER.
3. Enter the password, if necessary.
32
Section 6
Calibrating the Sensors
6.1 Calibrating the Temperature Sensor
The free chlorine probe contains a temperature sensor. The sensor is factory
pre-set but requires on-site calibration in the sample.
1. From the Main screen, press the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight CALIBRATION. Press ENTER.
Note: Measure the sample
temperature with a high precision
thermometer.
3. Use the LEFT ARROW key to highlight TEMP. CALIB. Press ENTER.
4. Press ENTER to select EXECUTION.
5. Highlight EXECUTION. Press ENTER. Wait for the temperature to appear.
Press ENTER when the temperature stabilizes.
6. Press the RIGHT ARROW key to highlight the temperature values displayed on
the bottom left of the screen.
7. Adjust the displayed temperature to the actual value of the sample in degrees
Celsius. Press ESC. The deviation between the calibration and the sensor
theoretical response curve is provided.
6.1.1 Temperature Conversion Table
Conversion from: °C to °F: °F = 1.8 × °C + 32
Conversion from °C to K:
K = °C + 273.15
Table 11 Temperature Conversions
°C
°F
K
°C
°F
K
0
32
273.15
23
73.4
296.15
1
33.8
274.15
24
75.2
297.15
2
35.6
275.15
25
77
298.15
3
37.4
276.15
26
78.8
299.15
4
39.2
277.15
27
80.6
300.15
5
41
278.15
28
82.4
301.15
6
42.8
279.15
29
84.2
302.15
7
44.6
280.15
30
86
303.15
8
46.4
281.15
31
87.8
304.15
9
48.2
282.15
32
89.6
305.15
10
50
283.15
33
91.4
306.15
11
51.8
284.15
34
93.2
307.15
12
53.6
285.15
35
95
308.15
13
55.4
286.15
36
96.8
309.15
14
57.2
287.15
37
98.6
310.15
15
59
288.15
38
100.4
311.15
16
60.8
289.15
39
102.2
312.15
17
62.6
290.15
40
104
313.15
18
64.4
291.15
41
105.8
314.15
33
Calibrating the Sensors
Table 11 Temperature Conversions (continued)
°C
°F
K
°C
°F
K
19
66.2
292.15
42
107.6
315.15
20
68
293.15
43
109.4
316.15
21
69.8
294.15
44
111.2
317.15
22
71.6
295.15
45
113
318.15
6.2 Choosing the Calibration Method
Calibrate the slope by comparing it to a laboratory measurement and set the zero
calibration with either a chemical zero, or with the electrical zero. For most users,
Hach recommends using the Electrical Zero Calibration. An optional chemical
zero cartridge is available. The recommended reference method for a chemical
calibration is DR/2500 AccuVac™ Method (Cat. No. 2505025).
6.3 Choice of Calibration Values
Note: All results (calibration or
measurements) are normalized to
the reference temperature (25 °C,
77 °F). If the sample's temperature
is different than the reference
temperature, automatic temperature
compensation will correct the value.
However, sufficient time must be
allowed for the sensor to reach
temperature equilibrium.
In processes that have significant variations in chlorine concentration, i.e.,
in a water tower, the calibration point should be found in the upper values rather
than in the lower values. This maximizes the precision of the apparatus.
Any imprecision in the comparison measurement will be reflected in the calibrated
measurements made by the instrument. Avoid this by using a reliable
comparison method.
6.4 Calibrating the Hydrazine Sensor
6.4.1 Electrical Zero Calibration
1. From the Main display, push the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight CALIBRATION. Press ENTER.
3. Use the LEFT ARROW key to highlight CONC. CALIB. Press ENTER.
4. Use the LEFT ARROW key to highlight ZERO. Press ENTER.
5. Press ENTER to select PROGRAMMING.
6. Use the RIGHT ARROW key to highlight ELECAUTO. Press ENTER.
7. Press the ESC key once.
34
Calibrating the Sensors
6.4.2 Chemical Zero Calibration
Note: Calibration can be stopped at
any time by pressing ESC. The
instrument will then revert to the
previous calibration.
In this procedure, use a sample that does not contain hydrazine or any other
oxygen scavengers. Ensure that the sample source has a sufficient flow rate and
that the sample is adequately mixed.
1. From the Main display, push the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight CALIBRATION. Press ENTER.
3. Use the LEFT ARROW key to highlight CONC. CALIB. Press ENTER.
4. Use the LEFT ARROW key to highlight ZERO. Press ENTER.
5. Press ENTER to select PROGRAMMING.
6. Use the RIGHT ARROW key to highlight CHEMICAL. Press ENTER.
7. Press the ESC key once.
8. Use the LEFT ARROW key to highlight EXECUTION. Press the ENTER.
9. The CAL message flashes, indicating that the instrument is in calibration
mode. Wait for a stable current, then press OK. The instrument displays the
zero for a few seconds, then returns to the previous level.
10. Press the ESC key once.
6.4.3 Slope Calibration
Note: Collect the sample for
reference analysis from the inlet
tube before it enters the analyzer
because a significant amount of
hydrazine is consumed during
passage through the measurement
cell.
1. From the Main display, push the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight CALIBRATION. Press ENTER.
3. Use the LEFT ARROW key to highlight CONC. CALIB. Press ENTER.
4. Use the LEFT ARROW key to highlight SLOPE. Press ENTER. The CAL
message flashes, indicating that the instrument is in calibration mode.
5. Wait for a stable current, then press OK, then immediately take a sample for
comparison analysis.
Note: Hach recommends using the
DR2500/DR4000 hydrazine or
carbohydrazide standard methods
8141 and 8140.
6. Adjust the value and units of the hydrazine concentration to the reference
value obtained by a standard method. To change a numeric value:
a. Select the value with the LEFT ARROW key.
b. Use the RIGHT ARROW key to highlight and change the leftmost digit.
c. Press the ENTER key to move to the next digit to the right.
d. Use the RIGHT ARROW key to change additional digits as needed.
e. Press the ENTER key as many times as needed to accept the value.
7. The analyzer then displays the date of the last calibration, along with the
calculated slope. Alter the date if necessary.
35
Calibrating the Sensors
6.4.4 Viewing Calibration History
1. From the Main display, push the RIGHT ARROW key.
2. Use the LEFT ARROW key to highlight CALIBRATION. Press ENTER.
3. Use the LEFT ARROW key to highlight HISTORIC. Press ENTER.
Table 12 Viewing Calibration History
Parameters
DATE
xx/xx/xx
Date of the last calibration. The programmed date is not automatically updated.
P
x.xxx µA/ppm
Slope value
ZERO
x.xxx nA
Offset value
∆T
x.x °C
Deviation between theoretical temperature (sensor curve) Th and measured temperature
T m :∆T = T h – T m
History
DATE
xx/xx/xx
Date of calibration n–1
P
x.xxx nA/ppm
Value of slope n–1
DATE
xx/xx/xx
Date of calibration n–2
P
x.xxx nA/ppm
Value of slope n–2
6.4.5 Calibration-related Messages
Error: ∆T OUT OF LIMITS
The temperature difference between the calibration and the theoretical sensor
response is greater than the authorized limit. Limits: ±20 °C.
Error: OUT OF 4/20 mA
The measured value is out of the programmed scale start and end range for
analog outputs 1 and 2 (PROGRAMMING/mA OUTPUTS/OUTPUT 1 or 2).
Timer Icon appears
When the S4 relay is used as a Timer, a countdown is displayed for the start of the
relay execution cycle. This countdown is expressed in hours:minutes, with the
exception of the last ten minutes, where it is expressed in hours:minutes:seconds.
36
Section 7
Maintenance
DANGER
Only qualified personnel should conduct the maintenance tasks described in this
section of the manual.
7.1 Scheduled Maintenance
7.1.1
Refilling the pH Conditioner
Replenish the reagent every 3 months, or more frequently if necessary.
CAUTION
To familiarize yourself with
handling precautions, dangers,
and emergency procedures,
always review the Material Safety
Data Sheets prior to handling
containers, reservoirs, and
delivery systems that contain
chemical reagents and standards.
Protective eye wear is always
recommended when contact with
chemicals is possible.
The standard conditioner cap fits on Merck bottles. An optional cap is available
that adapts wide-mouth Nalgene bottles to the pH conditioner/bottle cap
(Cat. No. 09073=C=0350. These caps avoid the transfer to the original bottle DIPA
available from Hach. Other adapters are available on request.
Replenish the pH conditioner every 1–3 months, depending on the particular
chemical chosen. A minimum pH of 10.2 should be maintained when measured at
the drain. To verify pH for ≥ 10.2 use DIPA supplied by Hach (Cat. No. 28344-53).
Monoethyamine, diethylamine and ammonia can also be used.
7.1.2 Replacing the Tubing
Replace the tubing annually. Use only Kynar® or Teflon® tubing
(Cat. No. 151575,00006).
7.1.3 Replacing the In-line Filter
Replace the In-line Filter (Cat. No. 363877,06000) every 1 to 6 months, depending
on sample conditions.
7.2 Unscheduled Maintenance
7.2.1
Replacing the Fuse
DANGER
Remove power from the
instrument when removing or
installing a fuse.
The T, 2 A, 250 V fuse (Cat. No. 295=100=203) used in this instrument is used for
both 115 V and 230 V operation.
DANGER
For continued protection against
fire hazard, replace the fuse only
with a fuse of the same type and
rating.
1. Make sure there is no power supplied to the instrument.
Replace as follows:
2. Remove the front cover and the shielding plate inside the instrument.
3. Locate the fuse holder. Using a flat-head screwdriver, gently push in the fuse
holder and rotate it to the left.
4. Gently pull the fuse holder out of the instrument.
5. Replace the fuse with an identical fuse.
6. Insert the fuse holder into its compartment. With the flat-head screwdriver,
gently push it in and rotate it to the right.
7. Replace the shielding plate and the front cover.
37
Maintenance
8. Reconnect power to the instrument.
7.2.2 Cleaning the Instrument
With the enclosure securely latched, use a soft cloth and a mild detergent to wipe
the outside of the enclosure. Do not use solvents. Do not allow moisture to enter
the enclosure.
7.2.3 Cleaning the Measuring Block
Once a month, check the platinum anode for deposits. If dirty, do not remove, but
clean the measuring block.
1. Turn off the sample flow from the flow meter.
2. Using a syringe, inject 10% nitric acid (Cat. No. 2540-49) into the measuring
cell via the venturi-valve inlet tubing.
3. Wait five minutes for the acid to react.
4. Turn the sample flow on and set 12 L/hour.
5. Recalibrate the instrument. Refer to section 6.4 on page 34.
38
Section 8
Modbus Communication
8.1 Introduction
The 9186 supports bi-directional Modbus communication over the integrated
RS485 interface. This provides multi-drop, digital network capability that can be
used to connect multiple 9186 series transmitters to a Programmable Logic
Controller (PLC) or Personal Computer (PC). The 9186 is designed as a Modbus
RTU slave, which allows a Modbus RTU master to access measurements,
settings, and alarms.
8.2 Modbus Settings
The following Modbus settings are available in the RS485 menu of the 9186.
To access the RS485 menu, select MENU, PROGRAMMING, RS485, then select
the appropriate menu item as follows.
8.2.1 N
This menu item selects the Modbus slave address. Valid choices are 1–247.
The default setting is 1.
8.2.2 Baud
This menu item selects the baud rate used for serial communications. This setting
must match the baud rate of the Modbus master. Valid choices are 300, 600,
1200, 2400, 4800, 9600, or 19200. The default setting is 19200.
8.2.3 Parity
This menu item selects the parity used for serial communications. This setting
must match the parity of the Modbus master. Valid choices are No, Odd, or Even.
The default setting is No.
8.2.4 Stop Bit
This menu item selects the number of stop bits used for serial communications.
This setting must match the stop bit setting of the Modbus master. Valid choices
are 1 or 2. The default setting is 1.
8.2.5 Swap Word
This menu item selects the floating point word order. Some PLC systems require
the two 16-bit registers be swapped when creating a 32-bit floating point number.
Valid choices are Yes or No. The default setting is Yes.
8.3 Modbus Function Codes
Four types of Modbus messages are supported by the 9186. Each message
consists of a query (request from the master) and a response. These messages
are described in section 8.3.1.
39
Modbus Communication
8.3.1 Read Input Registers—Function Code 03
This command reads the binary contents of a holding register in the 4xxxx
address range. The query message specifies the starting register and quantity of
registers to be read. Registers are addressed starting at zero. Table 13 is an
example that requests the value from register 40001.
Table 13 Read Input Register Query
Field Name
Hex Value
Slave address
01
Function
03
Starting address high byte
00
Starting address low byte
01
Number of registers high byte
00
Number of registers low byte
01
CRC high byte
84
CRC low byte
0A
Assume that register 40001 contains the value 5 (see Table 14).
Table 14 Read Input Register Response
Field Name
Hex Value
Slave address
01
Function
03
Byte count
02
Data high byte (register 40001)
00
Data low byte (register 40001)
05
CRC high byte
78
CRC low byte
47
8.4 Write Input Register—Function Code 06
This command writes the binary contents of a single holding register in the 4xxxx
address range. The query message specifies the register address and value to be
written. Registers are addressed starting at zero. The following message writes
the value 5 to register 40004 (see Table 15). Table 16 shows the response.
Table 15 Write Input Register Query
Field Name
40
Hex Value
Slave address
01
Function
06
Starting address high byte
00
Starting address low byte
03
Data high byte
00
Data low byte
05
CRC high byte
B9
CRC low byte
C9
Modbus Communication
Table 16 Write Input Register Response
Field Name
Hex Value
Slave address
01
Function
06
Starting address high byte
00
Starting address low byte
03
Data high byte
00
Data low byte
05
CRC high byte
B9
CRC low byte
C9
8.4.1 Write Multiple Input Registers—Function Code 16 (10 Hex)
This command writes the binary contents of multiple holding registers in the 4xxxx
address range. The query message specifies the starting register address and
values to be written. Registers are addressed starting at zero. The following
message writes the value 1, 2, 3, and 4 to registers 40001, 40002, 40003, and
40004 respectively (see Table 17). Table 18 shows the response.
Table 17 Write Multiple Input Registers Query
Field Name
Hex Value
Slave address
01
Function
10
Starting address high byte
00
Starting address low byte
01
Data high byte
00
Data low byte
05
CRC high byte
B9
CRC low byte
C9
Table 18 Write Multiple Input Registers Response
Field Name
Hex Value
Slave address
01
Function
06
Starting address high byte
00
Starting address low byte
03
Number of registers high byte
00
Number of registers low byte
04
Byte count
08
Data high byte
00
Data low byte
01
Data high byte
00
Data low byte
02
Data high byte
00
Data low byte
03
Data high byte
00
41
Modbus Communication
Table 18 Write Multiple Input Registers Response (continued)
Field Name
Hex Value
Data low byte
04
CRC high byte
2E
CRC low byte
B9
8.4.2 Report Slave ID—Function Code 17 (11 Hex)
This command returns a description of the type of controller present at the
slave address.
8.4.3 Floating Point Support
The original Modbus protocol specification did not support floating point numbers.
These are implemented in the 9186 as IEEE 754 floating point numbers, and are
stored in two back-to-back 16 bit registers. Table 19 is an example that requests
the value from register 40001-40002.
Table 19 Read Input Register Query
Field Name
Hex Value
Slave address
01
Function
03
Starting address high byte
00
Starting address low byte
00
Number of registers high byte
00
Number of registers low byte
02
CRC high byte
C4
CRC low byte
0B
Assume that the register combination 40001 and 40002 contains the 32-bit value
7.0 (see Table 20).
Table 20 Read Input register Response
Field Name
Hex Value
Slave address
01
Function
03
Byte count
04
Data high byte (register 40001)
00
Data low byte (register 40001)
00
Data high byte (register 40002)
40
Data low byte (register 40002)
E0
CRC high byte
B9
CRC low byte
C9
Note that it is up to the master to decipher the floating point representation of the
4 bytes, based on the IEE 754 standard. If the floating point numbers are
displayed incorrectly, the word order may need to be swapped. See section 8.2.5
on page 39 for more information on swapping words within floating point numbers.
42
Modbus Communication
8.5 Register Information
The fields shown in the register map are as follows:
Register—Modbus register number. Note that each register is 16 bits in length.
Floating point registers occupy two back-to-back 16-bit registers.
Data Type—Representation of the data. Can be floating point, integer,
bit or string.
Length—The number of 16-bit registers.
R/W—R for read only or R/W for read/write.
Units—A number corresponding to the type of units. The names of each unit are
shown in section 8.2.5 on page 39. An “Rxxxxx” indicates the units are selectable,
and are located in register number xxxxx.
Description—A description of the register.
8.5.1 Register Map
Table 21 Register Map
Register
Data Type
Length
R/W
Units (U)
Description
40000
Float
2
R
R40075
Concentration measurement
40002
Float
2
R
R40076
Temperature measurement
40004
Float
2
R
27
Intensity measurement
40006
Float
2
R
28
Flow rate measurement
40008
Float
2
R
R40075
Concentration of calibration offset
40010
Float
2
R
R40075
Concentration of calibration gain
40012
Float
2
R
R40076
Temperature calibration offset
40014
Float
2
R
—
Reserved for future application
40016
Float
2
R
25
pH calibration gain
40018.1
Bit
1
R
—
Instrument alarm (programmable)
40018.2
Bit
1
R
—
Instrument alarm (programmable)
40018.3
Bit
1
R
—
Instrument alarm (programmable)
40018.4
Bit
1
R
—
Instrument alarm (programmable)
40019
Integer
1
R
—
MONEC status
40020
Integer
1
R/W
—
Alarm 1 type (enum)
40021
Float
2
R/W
—
Alarm 1 setpoint
40023
Integer
1
R/W
—
Alarm low/high
40024
Integer
1
R/W
15
Alarm 1 delay
40025
Integer
1
R/W
10
Alarm 1 hyst
40026
Integer
1
R/W
—
Relay 1 characteristic
40027
Integer
1
R/W
—
Alarm 2 type (enum)
40028
Float
2
R/W
—
Alarm 2 setpoint
40030
Integer
1
R/W
—
Alarm 2 low/high
40031
Integer
1
R/W
15
Alarm 3 delay
40032
Integer
1
R/W
10
Alarm 3 hyst
43
Modbus Communication
Table 21 Register Map (continued)
44
Register
Data Type
Length
R/W
Units (U)
Description
40033
Integer
1
R/W
—
Relay 2 characteristic
40034
Integer
1
R/W
—
Alarm 3 mode
40035
Integer
1
R/W
—
Alarm 3 type (enum)
40036
Float
2
R/W
—
Alarm 3 setpoint
40038
Integer
1
R/W
—
Alarm 3 low/high
40039
Integer
1
R/W
15
Alarm 3 delay
40040
Integer
1
R/W
10
Alarm 3 hyst
40041
Integer
1
R/W
—
Relay 3 characteristic
40042
Integer
1
R/W
—
Alarm system acquitment
40043
Integer
1
R/W
—
Alarm 4 mode
40044
Integer
1
R/W
—
Alarm 4 type (enum)
40045
Float
2
R/W
—
Alarm 4 setpoint
40047
Integer
1
R/W
—
Alarm 4 low/high
40048
Integer
1
R/W
15
Alarm 4 delay
40049
Integer
1
R/W
10
Alarm 4 hyst
40050
Integer
1
R/W
—
Relay 4 characteristic
40051
Integer
1
R/W
—
Output signal 1 affectation
40052
Integer
1
R/W
—
Range output signal 1
40053
Integer
1
R/W
—
Output signal type 1
40054
Float
2
R/W
—
Recorder 1 minimum
40056
Float
2
R/W
—
Recorder 1 middle
40058
Float
2
R/W
—
Recorder 1 maximum
40060
Integer
1
R/W
—
Output signal 2 affectation
40061
Integer
1
R/W
—
Range output signal 2
40062
Integer
1
R/W
—
Output signal 1 type
40063
Float
2
R/W
—
Recorder 2 minimum
40065
Float
2
R/W
—
Recorder 2 middle
40067
Float
2
R/W
—
Recorder 2 maximum
40069
Integer
1
R/W
—
RS485 address
40070
Integer
1
R/W
—
Baud rate
40071
Integer
1
R/W
—
Parity
40072
Integer
1
R/W
—
Bit stop
40073
Integer
1
R/W
—
Swap word
40074
Integer
1
R/W
—
Average
40075
Integer
1
R/W
—
Concentration unit
40076
Integer
1
R/W
—
Temperature unit
40077
Integer
1
R/W
—
Language
40078
String
5
R/W
—
Serial number (10 characters max, null terminated)
Modbus Communication
8.5.2 Units Definition
Many of the registers in this section have associated units. The numbers
associated with each unit are shown in Table 22.
Table 22 Units of Measure
Value
Units
Description
0
mg/L
milligrams per liter
1
g/L
2
ppm
parts per million
3
ME
milli extinction
4
E
Extinction
5
m-1
per meter
6
FNU
Formazin nephelon unit
7
NTU
nephelometric turbidity unit
8
TE/F
German Formazin nephelometric unit
9
EBC
European brewery congress
grams per liter
10
%
percent
11
nm
nanometer
12
mm
millimeter
13
m
meter
14
ms
millisecond
15
S
16
ma
milliampere
17
mV
milivolt
18
mNTU
milli-NTU
19
mFTU
milli-FTU
20
mTE/F
milli-TE/F
21
m%
22
Counts
23
C
degrees C
24
F
degrees F
25
pH
26
mV/pH
27
µA
micro ampere
28
L/h
flow rate in liters per hour
second
milli-percent
counts
pH
millivolts per pH unit
45
Modbus Communication
8.6 Network Connections
The 9186 uses RS485 digital communications. RS485 is multi-drop network,
meaning multiple devices can be “daisy chained” on a single pair of wires.
8.6.1 RS485 Connections
Table 23 lists the connections to the RS485 network.
Table 23 RS485 Connections
Connector
Pin
Function
57012-00 Wire Color
K101
1
Data (+)
Blue
K101
2
Data (–)
White
K9
1 or 2
GND
Shield
8.6.2 Terminator
To preventing “ringing” on the RS485 network, a terminator jumper is provided on
the RS485 interface board, next to connector K101. The terminator should be
enabled on the last device on the network. Set the jumper as follows:
Position 0—Terminator disabled
Position 1—Terminator enabled (last device on RS485 network)
8.6.3 Network Cable
The recommended wire is a two-wire shielded RS485 communication cable.
Hach Catalog Number
Belden Part Number
Cable Type
57012-00
9841
2-wire Shielded
8.6.4 RS232 to RS485 Converter
An optional RS232 to RS485 converter may be required to convert the RS485
signal to RS232 on Programmable Logic Controllers (PLC) or Personal
Computers (PC). Only one converter is required for each RS485 network.
46
Hach Catalog Number
Description
57378-00
Isolated RS232 to RS485 converter, 115 V ac
57379-00
Isolated RS232 to RS485 converter, 230 V ac
Section 9
Troubleshooting
9.1 Troubleshooting Error Messages
When an error occurs, the measurement values are replaced by dashes, (- - -).
Message Type
Error Message
Solution
Measurement-related Error Messages
CONCENTRATION TOO HIGH
Check the current value, along with the calibration parameters.
CONCENTRATION TOO LOW
Check the current value, along with the calibration parameters.
TEMPERATURE ERROR
Check for short-circuit or open circuit.
CURRENT TOO LOW
Negative current. Check the electrode (electrolyte and membrane).
CURRENT TOO HIGH
Ensure that there are no short-circuits on the measurement chain. Check the
polarizing voltage.
Calibration-related Error Messages
∆T OUT OF LIMITS
The temperature difference between calibration and the theoretical sensor
response is greater than the allowed limit. Limits: ±20 °C
OUT OF 4/20 mA
The measured value is out of the programmed scale range for analog outputs
1 and 2.
47
Troubleshooting
9.2 Detecting Electrical Faults
Problem
Symptom
Solution
No display
No power
Loose connections
Check the power supply and the connection.
Faulty fuse
Check the fuse.
The power source has the wrong voltage
Check the voltage level.
The cable connecting the power board to the
CPU board is poorly connected
Check that the terminal strips are connected.
Incorrect connection between the CPU board
and measurement module
Check connections.
Short-circuit in the power board
Visually inspect the power board.
Faulty hardware. Failed display
Call technical support.
The display shows undefined characters
Poor CPU board or processor operation
Program the instrument to load the default values.
CPU board hardware
Re-initialize by turning the instrument off for 5 to 10 seconds. Call
technical support.
Faulty display
Call technical support. Order 09125=A=1000
The keyboard doesn't work; the keys are inactive
Poor CPU board operation, external
interference
1.
Re-initialize by turning the instrument off for 5 to 10 seconds.
2.
Check the keys once more.
Bad key pad or display
3.
If there is no change, call technical support.
Incorrect measurement
The instrument has not been correctly
programmed
Check the program parameters. Do they match the probe
properties?
Faulty CPU board
Call technical support. Order 09125=A=1000
Display appears to be locked and cannot be altered
Check probe connection.
Reinitialize.
Faulty CPU board
Reprogram the instrument.
Turn off the power for 5-10 seconds.
If problems persist, call technical support.
Alarm relays do not trigger
The transmitter has not been correctly
programmed
Check that the relay parameters have been programmed.
Faulty wiring
Make sure that the alarm values are set correctly.
Faulty hardware
Remove power. Check relay operation with an ohmmeter.
If problems persist, call technical support.
Output current remains at 0 or 20 mA
48
Incorrect programming
Check the output current parameters.
Poor or faulty connection with peripheral
devices
Check the cables.
Faulty output board
Call technical support.
Section 10
Description
Parts and Accessories
Catalog Number
9186 Hydrazine Analyzer w/RS485 ....................................................................................................19186=A=3011
918X Amperometric Measurement RS485 Board...............................................................................09180=A=1501
Adjustable Flow Meter........................................................................................................................... 694=000=001
Cable, shielded, 2-wire, (per ft) .................................................................................................................... 57012-00
Cleaning Bead (qty 1) .......................................................................................................................... 588801,75008
Complete Flow Controller Assembly ...................................................................................................09186=A=0400
Conditioning Bottle ..............................................................................................................................09186=A=0200
Conduit Adapter, large .......................................................................................................................... 425=135=222
Conduit Adapter, small .......................................................................................................................... 425=110=221
Connection Cables for Working/Reference/Counter Electrodes ....................................................... 09186=A=0500
CPU board with display.......................................................................................................................09125=A=1000
Diisopropylamine, 99% ................................................................................................................................. 2834453
EPROM N2H4......................................................................................................................................09180=A=6200
Flow meter ........................................................................................................................................... 510100,01610
Fuse, 2A, 250V ..................................................................................................................................... 295=100=203
In-line filter (qty 1) ................................................................................................................................ 363877,06000
Instruction Manual................................................................................................................................. 621=691=087
Isolated RS232 to RS485 converter, 115 V ac (optional) ............................................................................ 57378-00
Isolated RS232 to RS485 converter, 230 V ac (optional) ............................................................................ 57379-00
Measuring Cell ....................................................................................................................................09186=A=0100
Power Cord, 230 V (optional), 8 ft long ......................................................................................................... 4743900
Power Cord, 125 V (optional), 6 ft long ......................................................................................................... 4696400
Power Supply Board............................................................................................................................09125=A=2000
PP fitting ¼-inch .................................................................................................................................... 587=006=012
Reference Electrode (no cable) ........................................................................................................... 368429,00000
RS485 board + manual .......................................................................................................................09125=A=0485
Syringe................................................................................................................................................. 560150,21957
Tubing, ¼” OD (inlet) ............................................................................................................................ 151575,00006
Two year spare parts kit, includes .......................................................................................................09186=A=8000
6 x filters
1 x reference electrode
1 x venturi injection nozzle
7 x plastic beads
6 meters of ¼” PE tubing
Venturi Block and Body .......................................................................................................................09186=C=0110
Venturi Nozzle ..................................................................................................................................... 359090,00024
Working Electrode...............................................................................................................................09186=A=0300
9186Parts.fm
Page 49
Parts and Accessories
Section 11
How to Order
U.S.A. Customers
By Telephone:
6:30 a.m. to 5:00 p.m. MST
Monday through Friday
(800) 227-HACH (800-227-4224)
By Fax:
(970) 669-2932
By Mail:
Hach Company
P.O. Box 389
Loveland, Colorado 80539-0389 U.S.A.
Ordering information by e-mail: [email protected]
Information Required
•
Hach account number (if available)
•
Billing address
•
Your name and phone number
•
Shipping address
•
Purchase order number
•
Catalog number
•
Brief description or model number
•
Quantity
International Customers
Hach maintains a worldwide network of dealers and distributors. To locate the
representative nearest you, send e-mail to [email protected] or contact:
Hach Company World Headquarters; Loveland, Colorado, U.S.A.
Telephone: (970) 669-3050; Fax: (970) 669-2932
Technical and Customer Service (U.S.A. only)
Hach Technical and Customer Service Department personnel are eager to
answer questions about our products and their use. Specialists in analytical
methods, they are happy to put their talents to work for you.
Call 1-800-227-4224 or e-mail [email protected]
50
Section 12
Repair Service
Authorization must be obtained from Hach Company before sending any items for
repair. Please contact the Hach Service Center serving your location.
In the United States:
In Canada:
Hach Sales & Service Canada Ltd.
1313 Border Street, Unit 34
Winnipeg, Manitoba
R3H 0X4
(800) 665-7635 (Canada only)
Telephone: (204) 632-5598
FAX: (204) 694-5134
E-mail: [email protected]
In Latin America, the Caribbean, the Far East, the
Indian Subcontinent, Africa, Europe, or the Middle East:
Hach Company World Headquarters,
P.O. Box 389
Loveland, Colorado, 80539-0389 U.S.A.
Telephone: (970) 669-3050
FAX: (970) 669-2932
E-mail: [email protected]
51
Section 13
Warranty
Hach Company warrants this product to the original purchaser against any defects that are due
to faulty material or workmanship for a period of one year from date of shipment.
In the event that a defect is discovered during the warranty period, Hach Company agrees that, at
its option, it will repair or replace the defective product or refund the purchase price, excluding
original shipping and handling charges. Any product repaired or replaced under this warranty
will be warranted only for the remainder of the original product warranty period.
This warranty does not apply to consumable products such as chemical reagents; or
consumable components of a product, such as, but not limited to, lamps and tubing.
Contact Hach Company or your distributor to initiate warranty support. Products may not be
returned without authorization from Hach Company.
Limitations
This warranty does not cover:
•
Damage caused by acts of God, natural disaster, labor unrest, acts of war (declared or
undeclared), terrorism, civil strife or acts of any governmental jurisdiction
•
Damage caused by misuse, neglect, accident or improper application or installation
•
Damage caused by any repair or attempted repair not authorized by Hach Company
•
Any product not used in accordance with the instructions furnished by Hach Company
•
Freight charges to return merchandise to Hach Company
•
Freight charges on expedited or express shipment of warranted parts or product
•
Travel fees associated with on-site warranty repair
This warranty contains the sole express warranty made by Hach Company in connection with its
products. All implied warranties, including without limitation, the warranties of merchantability
and fitness for a particular purpose, are expressly disclaimed.
Some states within the United States do not allow the disclaimer of implied warranties and if this
is true in your state the above limitation may not apply to you. This warranty gives you specific
rights, and you may also have other rights that vary from state to state.
This warranty constitutes the final, complete, and exclusive statement of warranty terms and no
person is authorized to make any other warranties or representations on behalf of Hach
Company.
Limitation of Remedies
The remedies of repair, replacement or refund of purchase price as stated above are the
exclusive remedies for the breach of this warranty. On the basis of strict liability or under any
other legal theory, in no event shall Hach Company be liable for any incidental or consequential
damages of any kind for breach of warranty or negligence.
52