AMMONIUM MONITOR
WNH-7030
Smart equipment for wastewater treatment and environmental water monitoring. The accurate continuous
ammonium measurement for superior water-quality
monitoring with high performance and reliability.
FEATURES
The zero and the span are stable for long period. Zero drift
free, by auto-zero adjustment for every measuring cycle.
Self-cleaning function removes dirt and pollution in the
sampling lines.
Membrane concentration method* and conductometry
allows “linear” detection with high-accuracy.
The interference materials in sample water can be
removed by the gas penetration membrane.
The reliability is assured by the auto-span check function
with standard solution.
Instrument has a telemeter terminal board as standard
equipment, for output measuring value and controlling
signal.
Internal memory can store the data for 1 year. You can
download the data via Ethernet, USB1.1 and RS-232C.
Easy operation by the Interactive operation using a
touchable color-LCD display.
SPECIFICATIONS
↑
↑
Reagent-2
(Carrier)
Application for
Ammonia nitrogen in wastewater/environmental-water
Method
Membrane concentration method* and conductometry
Range
0 - 10 mg/L (Standard)
NH 3
Selectable between (0 - 1mg/L) and (0 - 100mg/L)
GAS
Accuracy
within ±5% F.S.
Measuring cycle 30 min. or 60 min. (Actual measurement: 20 min.)
Analog out
DC 0 - 1V
Digital I/O
Ethernet, USB1.1, RS-232C
Power
AC100±10V 50/60Hz
Wattage
Typ. 100VA (Max. 200VA)
Size
approx. W564×D450×H1600 mm
Weight
approx. 70 kg (Main Body)
Membrane
WNH-7030
Membrane
↑
↑
Sample
+
Reagent-1
Model
+
NH 4
+ H+
+
NH 4
NH 3
NH 3
GAS
GAS
↑
↑
Sample
+
Reagent-1
GAS
NH 3
+ H2O
+
NH 4
+ OH-
*Membrane Concentration Method
First, ammonia gas is volatilized from ammonium ions in
the sample. Ammonia is absorbed and concentrated to the
carrier solution via membrane. This method enables
selective separation of ammonium as all interfering
substances are removed.
KIMOTO ELECTRIC CO., LTD.
http://www.kimoto-electric.co.jp/
[email protected]
WNH-7030
Superiority of Conductmetry
MS Type Conductivity Electrode
OUT
Polishing Stirrer
Magnet
MS type conductivity electrode:
Polishing stirrer makes the smooth
contact of the sample water to the
electrode and keeps the surface of the
electrode in the best condition.
Conductivity
Electrode
Conductivity
Detector
Waste
Chamber
Bubble
Remover
Measuring Unit
Controlled at 35 degC
NC
V5
Motor
Comparison between Conductometry and Ion-electrode method
5
NH4+ (mg/L)
Potential (mV)
Potential (mV)
10
V4
NC
P2
P1
P3
P4
V6
NC
NC
P5
V1
V3
Reference
NC
10L
20L
NaOH
H2SO4
2L
HCl
Reagent Reagent Reagent
1
2
3
NC
2-points calibration is
necessary as reference
potential and slope are
easy to drift.
By the linear output and the
auto zero function, you just
have to do span calibration
for maintenance.
0
V2
Calibration Curve
by Ammonium Ion-electrode
Calibration Curve
by Conductimetry
(WHN-7030)
Membrane
Separate/
Concentrate
IN
Controlled
at 45 degC
Ammonium ion concentration can be
measured by the conductivity changes
of the carrier solution. And it enables
good linear compared with the ammonium ion-electrode method to measure
pH changes.
Flow Diagram
0.1
1
10
NH4+ (mg/L)
Waste
Standard
Solution
Washing
Water
SAMPLE
Schematic View
564
450
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
6
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Analyzing Unit
Power Switch
USB Port
AC Power Input
Base
Telemeter Terminal Board
Sample Water Reservoir*
Terminal for 4-20mA*
*Optional
P-3326 TT07
2
49
50
4
8
1600
1
(216)
(200)
564
7
370
450
(376)
40
500
(100)
4 -φ14
370
SAFETY CONCERNS
5
500
for Anchor Bolts
Please read instructions carefully before using. All the safety and operation instructions should also be read before the appliance is operated.
The appliance should be situated so that its location or position does not interfere with its proper ventilation. Precautions should be taken so that
the grounding or polarization means of an appliance is not defeated. The appliance should not be used near water (e.g. near bathtub,
washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool etc.).
For inquiries or information...
KIMOTO ELECTRIC CO., LTD.
3-1 FUNAHASHI-CHO TENNOJI-KU OSAKA 543-0024, JAPAN
TEL +81-6-6768-3401
Note) Specifications are subject to change without the notice for the improvement.
FAX +81-6-6764-7040
E-Mail
[email protected]
Web Site
http://www.kimoto-electric.co.jp/
WNH7030/57-01