Technical Information
CCS120
Sensor for total chlorine
Application
•
•
•
•
Drinking water conditioning
Pool water conditioning
Service water conditioning
Waste water treatment
Your benefits
• Flow and immersion installation
• Works with the well known assemblies:
CCA250
CYA611
• Works with the transmitter CCM223/253
• Retrofitable in existing applications
• Sensor selection via menu of the transmitter CCM223/253
• Temperature sensor NTC 10K
TI388C/07/en/07.06
51517374
CCS120
Function and system design
Measuring principle
The amperometric sensor is based on the conversion of the measuring variable chlorine in electrical current.
Two electrodes covered by an electrolyte are in contact to the medium via a membrane. It has a platinum
working electrode and a silver halogenide coated counter or reference electrode. The chlorine compounds
contained in the medium diffuse through the membrane. The constant polarisation voltage between the two
electrodes instigates the electrochemical reaction of the chlorine compounds on the working electrode. The
resulting current is measured as a primary signal (amperometric measurement principle). It is proportional to
the chlorine concentration within the sensor’s operating range and only slightly pH dependant for this type of
sensor. The primary signal is converted by the amplifier electronics of the sensor into a 0 ... 5 µA output signal
which is displayed by the transmitter.
Function
The sensor CCS120 is a membrane-capped amperometric two electrode sensor. It is used for continuous
measurement of total chlorine.
Total chlorine consists of free chlorine (HOCl, OCl-) and bound chlorine (chloramines).
To calibrate the measuring system, determine the content of chlorine using the DPD 1 / DPD 4 method. To
do so, you need a photometer with the pertaining reagents. The determined value is the calibration value for
the transmitter.
Measuring system
A complete measuring system in the flow mode comprises at least:
• Chlorine sensor
• Transmitter Liquisys M CCM223/253
• Special measuring cable
• Flow assembly
8
9
4
5
0.42
mg/l
25.0 ¡C
REL1
ALARM
CAL
REL
REL2
REL1
E
6
REL2
7
3
2
1
a0001691
Measuring system in the flow mode (example)
1
2
3
4
5
Flow assembly CCA250
Medium inlet
Inductive proximity switch for flow monitoring
Mounting place for pH/redox sensor
Chlorine sensor CCS120
6
7
8
9
Medium outlet
Sampling tap
Measuring cable CPK9-N*A1B
Transmitter
The described above measuring system is available as CCE-station (fully mounted on a board).
2
Endress+Hauser
CCS120
A complete measuring system in the immersion mode comprises at least:
• Chlorine sensor
• Transmitter Liquisys M CCM223/253
• Special measuring cable
• Immersion assembly
1
2
0.42
mg/l
25.0 ¡C
REL1
ALARM
CAL
REL
REL2
REL1
E
REL2
6
3
4
5
a0001791
Measuring system in the immersion mode (example)
1
2
3
Junction box VBM
Transmitter
Measuring cable CYK71
4
5
Immersion assembly CYA611-0B
Chlorine sensor CCS120
Input
Measured variables
Total chlorine
Measuring range
0.1 ... 10 mg/l
Standard slope
110 ... 120 nA/(mg/l)
Free chlorine (Cl2 (dissolved), HOCl, OCl-)
Bound chlorine (chloramines)
Organic-bound chlorine (e.g. cyanuric acid derivates)
Output
Output signal
0 ... 5 µA for connection to transmitter Liquisys M CCM223/253 with software version 2.32 or later
Power supply
Power supply
Endress+Hauser
15 V DC, 10 mA
3
CCS120
Performance characteristics
Response time
T90 approx. 60 s (as concentration rises and falls)
Resolution
0.01 mg/l
pH range
5.5 ... 9.5
pH dependency: jump from pH 7 to pH 8: approx. -10 % for free chlorine
Conductivity range
0.03 ... 40 mS/cm
Temperature range
5 ... 45 °C (41 ... 113 °F), no quick changes in temperature allowed
Pressure
Medium in the CCA250 assembly: max. 1 bar (14.5 psi)
Flow
optimum:
minimum:
maximum:
40 ... 60 l/h (10.56 ... 15.84 US.gal/h)
30 l/h (7.92 US.gal/h)
100 l/h (26.40 US.gal/h)
Minimum input flow velocity
optimum:
minimum:
maximum:
20 ... 30 cm/s (0.7 ... 1.0 ft/s)
15 cm/s (0.5 ft/s)
50 cm/s (1.6 ft/s)
Cross sensitivity
Oxidising reagents e.g. bromine, iodine, ozone, chlorine dioxide, permanganates result in false positive results.
Reducing reagents like sulphides, sulphites, tiosulphates, and hydrazine result in false negative results.
Service life membrane cap
Typically 3 - 6 months, depending on water quality
Installation
Installation conditions
The minimum flow may not drop below 30 l/h (7.92 US.gal/h).
The minimum input flow velocity may not drop below XXX.
Installation in flow assembly CCA250 or pendulum assembly CYA611-0B with thread NPT 3/4".
Environment
Storage temperature
Filled with electrolyte:
Without electrolyte:
Ingress protection
IP 68
4
5 ... 50 °C (41 ... 122 °F)
-20 ... +60 °C (-4 ... +140 °F)
Endress+Hauser
CCS120
Mechanical construction
Dimensions
27/1.06
NPT 3/4
183/7.20
Ø 29/
1.14
Ø 36/
1.42
Ø 25/
0.98
74/2.91
Ø 28.8/
1.13
mm/inch
a0003082
Dimensions
Weight
approx. 0.14 kg (0.31 lbs)
Materials
Sensor shaft:
Membrane cap:
Temperature sensor
NTC 10 kΩ at 25 °C (77 °F)
Plug-in head
TOP68 plug-in head
Cable length
max. 15 m (49.2 ft)
Endress+Hauser
PVC
PPE
5
CCS120
Ordering information
Sensor CCS120
Mesuring range
A 0.1 ... 10 mg/l
Head type
S Thread NPT 3/4"; plug TOP 68
Options
0 none
CCS120-
CCE system
complete order code
The CCE Compact chlorine system (mounted on a board) consists of four modules:
Module
Order no.
Sensor CCS120
CCS120-xxx
CCE-1 board
50041731
Measuring cable for CCE1
51517204
Liquisys M (of your choice)
CCM253..... (see Technical Information TI214C/07/en)
In North America the four modules are available as a complete package (115 V, CSA).
Order no. 51517437
Accessories
Connection accessories
Junction box VBM
• For cable extension, with 10 terminals
• IP 65 / NEMA 4X
• Material: aluminum
• Order numbers:
– cable entry Pg 13.5: 50003987
– cable entry NPT ½": 51500177
• Measuring cable CCS120-1M, cable length: 1 m (3.28 ft), for compact chlorine system CCE1
order no. 51517204
• Special measuring cable CPK9-N*A1B internal PM wire
For sensors with TOP68 plug-in head, for high-temperature and high-pressure applications, IP 68
Ordering acc. to product structure, see Technical Information (TI118C/07/en)
Installation accessories
• Flow assembly CCA250
for chlorine, chlorine dioxide, pH and redox;
Ordering acc. to product structure, see Technical Information (TI062C/07/en)
• Immersion assembly Dipfit W CYA611-0B
for sensor immersion in basins, open channels and tanks, PVC;
Ordering acc. to product structure (Technical Information TI166C/07/en)
• Compact chlorine system CCE1
Factory-assembled and wired panel for transmitter with flow assembly CCA250-A1; see also Technical
Information TI014C/07/en
Transmitter
6
• Liquisys M CCM223/253
Transmitter for chlorine, field or panel-mounted housing,
Hart® or PROFIBUS available,
Ordering acc. to product structure, see Technical Information (TI214C/07/en)
Endress+Hauser
CCS120
Maintenance
• Photometer CCM182; microprocessor-controlled photometer for chlorine, pH value, cyanuric acid;
Chlorine measuring range: 0.05 to 6 mg/l
pH measuring range: 6.5 to 8.4
• Electrolyte for CCS120, 50 ml
order no. 51516343
• Service kit for CCS120, consists of 2 membrane caps and 1 bottle of electrolyte (50 ml)
order no. 51517284
Documentation
Transmitters
• Liquisys M CCM223/253, Technical Information TI214C/07/en; order no. 51502336
Compact system
• Compact chlorine system CCE1, Technical Information TI014C/07/en; order no. 50050696
Measuring cables
• CPK1-12, Technical Information TI118C/07/en; order no. 50068526
Assemblies
• Flow assembly CCA250, Technical Information TI062C/07/en; order no. 50057220
• Immersion assembly CYA611, Technical Information TI166C/07/en; order no. 50085985
Endress+Hauser
7
International Head Quarters
Endress+Hauser
GmbH+Co. KG
Instruments International
Colmarer Str. 6
79576 Weil am Rhein
Deutschland
Tel. +49 76 21 9 75 02
Fax +49 76 21 9 75 34 5
www.endress.com
[email protected]
TI388C/07/en/07.06
51517374
Printed in Germany / FM+SGML 6.0 / DT
Technical Information
Chloromax CCS142D
Digital sensor with Memosens technology for determining free chlorine
Membrane-covered amperometric sensor for process and drinking water
applications
Application
Oxidants such as chlorine or inorganic chlorine compounds are
used to disinfect water. They must be dosed immediately,
depending on the operating conditions. If the concentrations are
too low, this could jeopardize the disinfection process. On the
other hand, concentrations which are too high can cause
corrosion, skin irritation and affect the taste of the water.
The CCS142D chlorine sensor is used to measure free chlorine
in the following areas:
• Drinking water
• Process water
• Industrial water treatment
Your benefits
• Sensor with digital signal processing:
– Not sensitive to electromagnetic interference thanks to
digital communication with the transmitter
– Calibration data saved in the sensor, making it possible to
calibrate at any transmitter or location and install
subsequently at the measuring point
• Ultimate measuring reliability:
– Measurement practically independent of the flow at flow
velocities above 15 cm/s (~0.5 ft/s)
– Long calibration and maintenance intervals
– No change in measured value in the event of fluctuations in
conductivity
• Membrane-covered sensor, therefore:
– Easy membrane replacement thanks to prefabricated
membrane head
– Minimum maintenance
• Zero-point calibration not required. No complex installation
of an activated carbon filter, as found with open chlorine
sensors
TI419C/07/EN/01.11
71128490
Chloromax CCS142D
Function and system design
Measuring principle
The concentration of free chlorine is determined according to the amperometric measuring principle. The
hypochlorous acid (HOCl) contained in the medium diffuses through the sensor membrane and is reduced to
chloride ions (Cl-) on the gold cathode. On the silver anode, silver is oxidized to silver chloride. The electron
release of the gold cathode and electron acceptance on the silver anode result in a current flow which is
proportional to the free chlorine concentration in the medium under constant conditions. The concentration
of hypochlorous acid in the medium depends on the pH value. This dependence can be compensated by
measuring the pH value in the flow assembly.
The transmitter transforms the current signal into the measuring unit concentration in mg/l.
Function
The membrane-covered sensor CCS142D consists of a cathode (working electrode) and an anode
(counterelectrode) in an electrolyte which is separated from the medium by a membrane. The membrane
prevents the electrolyte from leaking and protects against contaminant penetration.
The measuring system is calibrated by determining the free chlorine based on the DPD method (photometric
method). The calibration value determined is entered in the transmitter.
Measuring system
A complete measuring system consists of:
• A CCS142D chlorine sensor
• An assembly, e.g. Flowfit CCA250
• A Memosens data cable CYK10
• A transmitter, e.g. Liquiline CM44x
Optional:
• RM junction box for cable extension
• When using the assembly CCA250: additional sensor(s), e.g. pH sensor CPS71D
a0007341
Measuring system
1
2
3
4
5
6
7
2
Liquiline CM44x transmitter with weather protection cover
Power supply line for transmitter
CCS142D chlorine sensor
Flowfit CCA250 assembly
Inlet to assembly (outlet on rear, not shown in graphic)
CPS71D pH sensor
CYK10 measuring cable
Endress+Hauser
Chloromax CCS142D
Input
Measured variable
Free chlorine:
Measuring range
• CCS142D-A:
0.05 to 20 mg/l Cl2 (25 °C (77 °F), pH 7.2)
• CCS142D-G:
0.01 to 5 mg/l Cl2 (25 °C (77 °F), pH 7.2)
Depolarization current
• CCS142D-A:
approx. 25 nA per mg/l Cl2 (25° C (77 °F), pH 7.2)
• CCS142D-G:
approx. 80 nA per mg/l Cl2 (25 °C (77 °F), pH 7.2)
hypochlorous acid (HOCl)
Performance characteristics
Response time
T90 < 2 min
in applications involving mainly active chlorination
Reference operating
conditions
25 °C (77 °F)
pH 7.2
Measured value resolution
• CCS142D-A:
approx. 15 μg/l Cl2
• CCS142D-G:
approx. 5 μg/l Cl2
Maximum measured error
1 % of measured value
Repeatability
• Sensor: ± 1%
• Reference method: depending on version
Calibration standards do not have long-term stability.
Nominal slope
• CCS142D-A:
-25 nA per mg/l
• CCS142D-G:
-80 nA per mg/l
Drift
< 1.5 % per month
Polarization time
• CCS142D-A:
Commissioning: 60 min
Reoperation: 30 min
• CCS142D-G:
Commissioning: 90 min
Reoperation: 45 min
Electrolyte operating time
At average medium concentrations of 1 mg/l Cl
• CCS142D-A:
> 5 years
• CCS142D-G:
> 3 years
Chlorine intrinsic
consumption
At average medium concentrations of 1 mg/l Cl and reference conditions
• CCS142D-A:
25 ng Cl per hour
• CCS142D-G:
100 ng Cl per hour
Endress+Hauser
3
Chloromax CCS142D
Installation
Installation instructions
Flow assembly
The flow assembly CCA250 is designed for on-site installation of the sensor. In addition to the chlorine or
chlorine dioxide sensor, a pH and an ORP sensor can be installed. A needle valve regulates the flow within the
range of 30 to 120 l/h (7.9 to 31.7 US.gal/h).
When installing the sensor, note the following:
• The flow must be at least 30 l/h (7.9 US.gal/h).
If the flow drops below this value or stops completely, this can be detected by an inductive proximity switch
and an alarm signal plus locking of the dosage pumps can be triggered.
• If the medium is fed back into a surge tank, pipeline or the like, ensure that the thus generated back pressure
on the sensor does not exceed 1 bar (14.5 psi) and remains constant.
• Negative pressure at the sensor, e.g. by feedback of medium to the suction side of a pump, must be avoided.
For further installation instructions, see the Operating Instructions of the flow assembly.
Immersion assembly
Alternatively, the sensor can be installed in an immersion assembly with threaded connection NPT ¾",
e.g. CYA112.
Please note the following when installing the sensor:
• Hold the sensor securely in position and screw the assembly handtight onto the sensor. This prevents the
cables from twisting and cable rupture.
• To improve the sealing effect, we recommend you wrap a thin PTFE tape around the thread for assemblies
with an NPT ¾" thread.
Additional installation instructions can be found in the Operating Instructions for the assembly.
Environment
Storage temperature
Filled with electrolyte:
Without electrolyte:
Ingress protection
IP 68 (10 m (33 ft) water column at 25 °C (77 °F) during 45 days, 1 mol/l KCl)
5 to 50 °C (41 to 122 °F)
-20 to 60 °C (-4 to 140 °F)
Process
Process temperature
0 to 45 °C (32 to 113 °F), non-freezing
Process pressure
Medium in the CCA250 assembly: max. 1 bar (14.5 psi)
pH range
Calibration
CCS142D-A:
CCS142D-G:
Measurement:
4 to 8 pH
4 to 8.2 pH
4 ... 9 pH
Chlorine measurement possible up to pH 9 with limited accuracy.
Flow
in the CCA250 assembly: min. 30 l/h (8 US.gal./h)
Flow rate
min. 15 cm/s (0.5 ft/s)
4
Endress+Hauser
Chloromax CCS142D
Mechanical construction
Dimensions
a0007386
Dimensions
Weight
approx. 0.1 kg (0.22 lbs)
Material
Sensor shaft:
Membrane:
Membrane cap:
Cathode:
Anode:
Cable length
max. 100 m (330 ft), incl. cable extension
PVC
PTFE
PBT (GF 30), PVDF
Gold
Silver / silver chloride
Ordering information
Product structure
Measuring range
A 0.05 to 20 mg/l (0.05 to 20 ppm)
G 0.01 to 5 mg/l (0.01 to 5 ppm)
Approval
A Non-hazardous area
Sensor head type
S Thread NPT 3/4, Memosens plug-in head
Cable length
8 Standard: without cable
Accessories
0 None
CCS142D-
Endress+Hauser
Complete order code
5
Chloromax CCS142D
Scope of delivery
The scope of delivery comprises:
• 1 chlorine sensor
• 1 bottle with electrolyte (50 ml)
• 1 replacement cartridge with pretensioned membrane
• 1 Operating Instructions in English
Accessories
Installation accessories
Flowfit CCA250
• Flow assembly for chlorine, chlorine dioxide, pH and ORP sensors
• Ordering acc. to product structure, see Technical Information TI062C/07/en
Wastewater assembly Flexdip CYA112
• Modular assembly system for sensors in open basins, channels and tanks
• Versions in stainless steel or PVC
• Ordering acc. to product structure (Technical Information TI432C/07/en)
Connection accessories
CYK10 Memosens data cable
• For digital sensors with Memosens technology
• Ordering according to product structure, see Technical Information (TI376C/07/en)
CYK81 measuring cable
• Non-terminated measuring cable for extension of sensor cables of e.g. Memosens sensors, CUS31/CUS41
• 2 wires, twisted pair with shield and PVC-sheath (2 x 2 x 0.5 mm2 + shield)
• Sold by the meter, order no.: 51502543
Junction box RM
• For cable extension (e.g. for Memosens sensors)
• 5 terminals
• Cable entries: 2 x Pg 13.5
• Material: PC
• Ingress protection: IP 65
• Order no.: 51500832
Measuring point identification
marking
Memoclip
• Identification for Memosens sensors
• 100 plastic clips incl. label sheets
• order no. 71038228
Calibration
CCM182
• Microprocessor-controlled photometer for determining chlorine and pH value
• Measuring range for chlorine: 0.05 - 6 mg/l
• Measuring range for pH value: 6.5 - 8.4
• Order no.: CCM182-0
Maintenance
CCY14-WP
• 2 replacement cartridges ready-made for CCS140/141/142D chlorine and CCS240/241 chlorine dioxide
sensors
• Order no. 50005255
CCY14-F
• Electrolyte for CCS140 / CCS141 / CCS142D chlorine sensors; 50 ml
• Order no. 50005256
Polishing sheets COY31-PF
• 10 pieces for cleaning of the gold cathode
• For oxygen and chlorine sensors
• Order no. 51506973
Service kit CCS14x
• For chlorine sensors CCS140/CCS141/CCS142D
• 2 replacement cartridges, filling electrolyte 50 ml, polishing sheets
• Order no. 71076921
6
Endress+Hauser
Chloromax CCS142D
System solutions
Compact measuring station CCE10/CCE11
• Panel mounted ready for connection for holding one or three transmitters, with flow assembly CCA250-A1
• Ordering acc. to product structure, s. Technical Information TI440C/07/EN
Endress+Hauser
7
Instruments International
Endress+Hauser
Instruments International AG
Kaegenstrasse 2
4153 Reinach
Switzerland
Tel.+41 61 715 81 00
Fax+41 61 715 25 00
www.endress.com
[email protected]
TI419C/07/EN/01.11
71128490
FM9
Technical Information
CCS140 and CCS141
Sensors for free chlorine
Amperometric, membrane-covered sensors for installation in the
CCA250 assembly
Application
Oxidising agents such as chlorine or anorganic chlorine
compounds are used for disinfection of water. Their dosing must
be carefully controlled to suit the application. Too low a
concentration makes the degree of disinfection questionable.
Too high a concentration can result in corrosion effects,
impairment of taste or skin irritation.
The CCS140 and CCS141 chlorine sensors are applied for
measurement of free active chlorine in the following fields:
• Drinking water treatment
• Pool water treatment
• Industrial water treatment
Your benefits
• Minimum flow rate for installation in the CCA250 flow
assembly: 30 l/h
• Measurement almost independent of flow rate in the range
above 30 l/h
• No zero point calibration necessary. This means complicated
installation of an active carbon filter, as in open chlorine
sensors, is not necessary.
• Measured values are not affected by conductivity fluctuation.
• The CCS140 sensor is ready for measurement after a
polarisation time of approx. 30 ... 60 minutes. The CCS141
sensor requires 45 ... 90 min.
• Easy membrane replacement thanks to ready-made
membrane head
• Recalibration intervals approx. 1 ... 4 months under constant
operating conditions
• Back pressure up to 1 bar / 14.5 psi allowed at the outlet
TI058C/07/en/02.05
50028816
CCS140 / CCS141
Function and system design
Measuring principle
The concentration of free chlorine is determined according to the amperometric measuring principle. The
hypochlorous acid (HOCl) contained in the medium diffuses through the sensor membrane and is reduced to
chloride ions (Cl-) on the gold cathode. On the silve anode, silver is oxidised to silver chloride. The electron
release of the gold cathode and electron acceptance on the silver anode result in a current flow which is
proportional to the free chlorine concentration in the medium under constant conditions. The concentration
of hypochlorous acid in the medium depends on the pH value. This dependence can be compensated by
measuring the pH value in the flow assembly.
The transmitter transforms the current signal into the measuring unit concentration in mg/l.
Function
The membrane-capped CCS140 / CCS141 sensors consist of a cathode serving as the working electrode and
an anode acting as the counter electrode. These electrodes are immersed in an electrolyte. Electrodes and
electrolyte are separated from the medium by a membrane. The membrane prevents the loss of electrolyte and
the penetration of contaminants. The CCS140 and CCS141 sensors are used for measurement of free chlorine.
To calibrate the measuring system, determine the content of free chlorine using the DPD method. You need a
photometer with the pertaining reagents. The determined value is the calibration value for the transmitter.
Measuring system
A complete measuring system comprises at least:
• Chlorine sensor
• Liquisys M CCM223/253 transmitter
• Special measuring cable
• Flow assembly
• Reference measuring instrument for determination of free chlorine according to the DPD method
8
9
4
5
0.42
mg/l
25.0 ¡C
REL1
ALARM
CAL
REL
REL2
REL1
E
6
REL2
7
3
2
1
a0001691
Measuring system in the flow mode (example)
1
2
3
4
5
2
CCA250 flow assembly
Medium inlet
Inductive proximity switch for flow monitoring
Mounting place for pH/redox sensors
Chlorine sensor
6
7
8
9
Medium outlet
Sampling tap
Fixed measuring cable
Transmitter
Endress+Hauser
CCS140 / CCS141
Input
Measured variable
Free chlorine:
Measuring range
CCS140 (for industrial water, pool water): 0.05 ... 20 mg Cl2/l (25 °C / 77 °F, pH 7.2)
CCS141 (for drinking water applications): 0.01 ... 5 mg Cl2/l (25 °C / 77 °F, pH 7.2)
Depolarisation current
CCS140:
CCS141:
hypochlorous acid (HOCl)
approx. 25 nA per mg Cl2/l (25° C / 77 °F, pH 7.2)
approx. 80 nA per mg Cl2/l (25 °C / 77 °F, pH 7.2)
Performance characteristics
Response time
T90 < 2 min
T99 < 5 min
in applications involving mainly active chlorination
Polarisation time
CCS140:
First polarisation:
Repolarisation:
CCS141:
First polarisation:
Repolarisation:
Drift
< 1.5 % per month
Electrolyte service life
typically 12 months
60 min
30 min
90 min
45 min
Installation
Installation instructions
The flow assembly CCA250 is designed for on-site installation of the sensor. In addition to the chlorine or
chlorine dioxide sensor, a pH and redox sensor can be installed. A needle valve regulates the flow within the
range of 30 ... 120 l/h (7.92 ... 31.68 US.gal/h).
When installing the sensor, note the following:
• The flow must be at least 30 l/h.
If the flow drops below this value or stops completely, this can be detected by an inductive proximity switch
and an alarm signal plus locking of the dosage pumps can be triggered.
• If the medium is fed back into a surge tank, pipeline or the like, ensure that the thus generated back pressure
on the sensor does not exceed 1 bar (14.5 psi) and remains constant.
• Negative pressure at the sensor, e.g. by feedback of medium to the suction side of a pump, must be avoided.
For further installation instructions, see the operating instructions of the flow assembly.
Endress+Hauser
3
CCS140 / CCS141
Environment
Storage temperature
Filled with electrolyte:
Without electrolyte:
Ingress protection
IP 68 (up to the mounting collar Ø 36 mm / 1.42")
5 ... 50 °C / 41 ... 122 °F
-20 ... 60 °C / -4 ... 140 °F
Process
Temperature range
CCS140:
CCS141:
10 ... 45 °C / 50 ... 113 °F
2 ... 45 °C / 36 ... 113 °F
pH range
CCS140:
CCS141:
4 ... 8 pH
4 ... 8.2 pH
Pressure
Medium in the CCA250 assembly: max. 1 bar (14.5 psi)
Flow
in the CCA250 assembly: min. 30 l/h / 7.92 US.gal./h
Flow velocity
min. 15 cm/s / 0.5 ft/s
Mechanical construction
160 / 6.30
88 / 3.46
74 / 2.91
Ø12 / 0.47
6.5 / 0.26
Dimensions
Ø 25/0.98
Ø 29/1.14
Ø 36/1.42
a0002401-en
Dimensions
4
Endress+Hauser
CCS140 / CCS141
Weight
approx. 0.5 kg / 1.1 lb.
Material
Sensor shaft:
Membrane:
Membrane cap:
Cathode:
Anode:
Cable connection
Fixed cable (3 m / 9.84 ft), four cores, double-screened, low noise
Cable length
max. 30 m / 98.43 ft (cable extension included)
Temperature sensor
NTC, 10 kΩ at 25 °C / 77 °F
PVC
PTFE
PBT (GF 30), PVDF
Gold
Silver / silver chloride
Ordering information
CCS140 sensor
Version
A without temperature sensor
N with NTC temperature sensor
CCS140-
CCS141 sensor
Version
N with NTC temperature sensor
CCS141-
Scope of delivery
Endress+Hauser
complete order code
complete order code
The scope of delivery comprises:
• 1 chlorine sensor
• 1 bottle filled with electrolyte (50 ml) plus nozzle
• 1 membrane cap for protection and storage
• 1 replacement cartridge with pretensioned membrane
• Operating Instructions, English
5
CCS140 / CCS141
Accessories
Installation accessories
• Flow assembly CCA250
for chlorine, chlorine dioxide, pH and redox;
Ordering acc. to product structure, see Technical Information (TI 062C/07/en)
• Compact chlorine system CCE1
Factory-assembled and wired panel for transmitter with flow assembly CCA250-A1; see also Technical
Information TI 014C/07/en
Connection accessories
• Junction box VBC
Metallic junction box for cable extension,
dimensions (W x D x H): 125 x 80 x 54 mm / 4.92 x 3.15 x 2.13 inches
Order no. 50005181
• CMK special measuring cable
for cable extension between junction box and transmitter, non terminated, sold by the metre
Order no. 50005374
Transmitter
• Liquisys M CCM223/253
Transmitter for chlorine, field or panel-mounted housing,
Hart® or PROFIBUS available,
Ordering acc. to product structure, see Technical Information (TI 214C/07/en)
Maintenance /calibration
• Photometer CCM182; microprocessor-controlled photometer for chlorine, pH value, cyanuric acid;
Chlorine measuring range: 0.05 - 6 mg/l
pH measuring range: 6.5 - 8.4
• CCY14-F
Electrolyte for CCS140 / CCS141 chlorine sensors, 50 ml
Order no. 50005256
• CCY14-WP
2 replacement cartridges ready-made for CCS140/141/240/241 chlorine and chlorine dioxide sensors
Order no. 50005255
6
Endress+Hauser
CCS140 / CCS141
Endress+Hauser
7
International Head Quarters
Endress+Hauser
GmbH+Co. KG
Instruments International
Colmarer Str. 6
79576 Weil am Rhein
Deutschland
Tel. +49 76 21 9 75 02
Fax +49 76 21 9 75 34 5
www.endress.com
[email protected]
TI058C/07/en/02.05
50028816
Printed in Germany / FM+SGML 6.0 / DT
Technical Information
CCS240 and CCS241
Sensors for chlorine dioxide
Amperometric, membrane-covered sensors for installation in the
CCA250 assembly
Application
Chlorine dioxide is used for disinfection of water. Its dosing
must be carefully controlled to suit the application. Too low a
concentration makes the degree of disinfection questionable.
Too high a concentration can result in corrosion effects,
impairment of taste or skin irritation.
The CCS240 and CCS241 sensors are applied for measurement
of chlorine dioxide in the following fields:
• Drinking water treatment
• Pool water treatment
• Industrial water treatment
Your benefits
• Minimum flow rate for installation in the CCA250 flow
assembly: 30 l/h
• Measurement almost independent of flow rate in the range
above 30 l/h
• No zero point calibration necessary. This means complicated
installation of an active carbon filter, as in open chlorine
dioxide sensors, is not necessary.
• Measured values are not affected by conductivity fluctuation.
• The CCS240 sensor is ready for measurement after a
polarisation time of approx. 10 ... 30 minutes. The CCS241
sensor requires 45 ... 90 min.
• Easy membrane replacement thanks to ready-made
membrane head
• Recalibration intervals approx. 1 ... 4 months under constant
operating conditions
• Back pressure up to 1 bar / 14.5 psi allowed at the outlet
TI114C/07/en/02.05
50068514
CCS240 / CCS241
Function and system design
Measuring principle
The concentration of chlorine dioxide is determined according to the amperometric measuring principle. The
chlorine dioxide (ClO2) contained in the medium diffuses through the sensor membrane and is reduced to
chloride ions (Cl-) on the gold cathode. On the silve anode, silver is oxidised to silver chloride. The electron
release of the gold cathode and electron acceptance on the silver anode result in a current flow which is
proportional to the chlorine dioxide concentration in the medium. This process takes place within a wide pH
and temperature range.
The transmitter transforms the current signal into the measuring unit concentration in mg/l.
Function
The membrane-capped CCS240 / CCS241 sensors consist of a cathode serving as the working electrode and
an anode acting as the counter electrode. These electrodes are immersed in an electrolyte. Electrodes and
electrolyte are separated from the medium by a membrane. The membrane prevents the loss of electrolyte and
the penetration of contaminants. The CCS240 and CCS241 sensors are used for measurement of chlorine
dioxide.
To calibrate the measuring system, determine the content of chlorine dioxide using the DPD method. You need
a photometer with the pertaining reagents. The determined value is the calibration value for the transmitter.
Measuring system
A complete measuring system comprises at least:
• Chlorine dioxide sensor
• Liquisys M CCM223/253 transmitter
• Special measuring cable
• Flow assembly
• Reference measuring instrument for determination of chlorine dioxide according to the DPD method
8
9
4
5
0.42
mg/l
25.0 ¡C
REL1
ALARM
CAL
REL
REL2
REL1
E
6
REL2
7
3
2
1
a0001691
Measuring system in the flow mode (example)
1
2
3
4
5
2
CCA250 flow assembly
Medium inlet
Inductive proximity switch for flow monitoring
Mounting place for pH/redox sensors
Chlorine dioxide sensor
6
7
8
9
Medium outlet
Sampling tap
Fixed measuring cable
Transmitter
Endress+Hauser
CCS240 / CCS241
Input
Measured variable
Chlorine dioxide (ClO2)
Measuring range
CCS240 (for industrial water, pool water): 0.05 ... 20 mg ClO2/l
CCS241 (for drinking water applications): 0.01 ... 5 mg ClO2/l
Performance characteristics
Response time
T90 < 2 min
T99 < 5 min
Polarisation time
CCS240:
First polarisation:
Repolarisation:
CCS241:
First polarisation:
Repolarisation:
Drift
< 1.5 % per month
Electrolyte service life
typically 12 months
30 min
10 min
90 min
45 min
Installation
Installation instructions
The flow assembly CCA250 is designed for on-site installation of the sensor. In addition to the chlorine or
chlorine dioxide sensor, a pH and redox sensor can be installed. A needle valve regulates the flow within the
range of 30 ... 120 l/h (7.92 ... 31.68 US.gal/h).
When installing the sensor, note the following:
• The flow must be at least 30 l/h.
If the flow drops below this value or stops completely, this can be detected by an inductive proximity switch
and an alarm signal plus locking of the dosage pumps can be triggered.
• If the medium is fed back into a surge tank, pipeline or the like, ensure that the thus generated back pressure
on the sensor does not exceed 1 bar (14.5 psi) and remains constant.
• Negative pressure at the sensor, e.g. by feedback of medium to the suction side of a pump, must be avoided.
For further installation instructions, see the operating instructions of the flow assembly.
Endress+Hauser
3
CCS240 / CCS241
Environment
Storage temperature
Filled with electrolyte:
Without electrolyte:
Ingress protection
IP 68 (up to the mounting collar Ø 36 mm / 1.42")
5 ... 50 °C / 41 ... 122 °F
-20 ... 60 °C / -4 ... 140 °F
Process
Temperature range
2 ... 45 °C / 36 ... 113 °F
pH range
in stability range of ClO2
Pressure
Medium in the CCA250 assembly: max. 1 bar (14.5 psi)
Flow
in the CCA250 assembly: min. 30 l/h / 7.92 US.gal./h
Flow velocity
min. 15 cm/s / 0.5 ft/s
Mechanical construction
160 / 6.30
88 / 3.46
74 / 2.91
Ø12 / 0.47
6.5 / 0.26
Dimensions
Ø 25/0.98
Ø 29/1.14
Ø 36/1.42
a0002401-en
Dimensions
4
Endress+Hauser
CCS240 / CCS241
Weight
approx. 0.5 kg / 1.1 lb.
Material
Sensor shaft:
Membrane:
Membrane cap:
Cathode:
Anode:
Cable connection
Fixed cable (3 m / 9.84 ft), four cores, double-screened, low noise
Cable length
max. 30 m / 98.43 ft (cable extension included)
Temperature sensor
NTC, 10 kΩ at 25 °C / 77 °F
PVC
PTFE
PBT (GF 30), PVDF
Gold
Silver / silver chloride
Ordering information
CCS240 sensor
Version
N with NTC temperature sensor
CCS240-
CCS241 sensor
Version
N with NTC temperature sensor
CCS241-
Scope of delivery
Endress+Hauser
complete order code
complete order code
The scope of delivery comprises:
• 1 chlorine dioxide sensor
• 1 bottle filled with electrolyte (50 ml) plus nozzle
• 1 membrane cap for protection and storage
• 1 replacement cartridge with pretensioned membrane
• Operating Instructions, English
5
CCS240 / CCS241
Accessories
Installation accessories
• Flow assembly CCA250
for chlorine, chlorine dioxide, pH and redox;
Ordering acc. to product structure, see Technical Information (TI 062C/07/en)
• Compact chlorine system CCE1
Factory-assembled and wired panel for transmitter with flow assembly CCA250-A1; see also Technical
Information TI 014C/07/en
Connection accessories
• Junction box VBC
Metallic junction box for cable extension,
dimensions (W x D x H): 125 x 80 x 54 mm / 4.92 x 3.15 x 2.13 inches
Order no. 50005181
• CMK special measuring cable
for cable extension between junction box and transmitter, non terminated, sold by the metre
Order no. 50005374
Transmitter
• Liquisys M CCM223/253
Transmitter for chlorine, field or panel-mounted housing,
Hart® or PROFIBUS available,
Ordering acc. to product structure, see Technical Information (TI 214C/07/en)
Maintenance /calibration
• Photometer CCM182; microprocessor-controlled photometer for chlorine, pH value, cyanuric acid;
Chlorine measuring range: 0.05 - 6 mg/l
pH measuring range: 6.5 - 8.4
• CCY24-F
Electrolyte for CCS240 / CCS241 chlorine dioxide sensors, 50 ml
Order no. 50064294
• CCY14-WP
2 replacement cartridges ready-made for CCS140/141/240/241 chlorine and chlorine dioxide sensors
Order no. 50005255
6
Endress+Hauser
CCS240 / CCS241
Endress+Hauser
7
International Head Quarters
Endress+Hauser
GmbH+Co. KG
Instruments International
Colmarer Str. 6
79576 Weil am Rhein
Deutschland
Tel. +49 76 21 9 75 02
Fax +49 76 21 9 75 34 5
www.endress.com
[email protected]
TI114C/07/en/02.05
50068514
Printed in Germany / FM+SGML 6.0 / DT