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 thesampling lines.
Membrane concentration method* and conductometry
allows “linear” detection with high-accuracy.
The interference materials in sample water can beremoved 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 candownload the data via Ethernet, USB1.1 and RS-232C.
Easy operation by the Interactive operation using atouchable color-LCD display.

SPECIFICATIONS↑↑Reagent-2(Carrier)Application for

Ammonia nitrogen in wastewater/environmental-water

MethodMembrane concentration method* and conductometryRange

0 - 10 mg/L (Standard)

NH 3Selectable 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

WattageTyp. 100VA (Max. 200VA)

Size

approx. W564×D450×H1600 mm

Weightapprox. 70 kg (Main Body)

Membrane

WNH-7030

Membrane↑↑
Sample+Reagent-1

Model+

NH 4+ H++NH 4NH 3NH 3GASGAS↑↑
Sample+Reagent-1
GAS

NH 3+ H2O+

NH 4+ OH-*Membrane Concentration Method

First, ammonia gas is volatilized from ammonium ions inthe sample. Ammonia is absorbed and concentrated to thecarrier 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/
sales@kimoto-electric.co.jp

WNH-7030
Superiority of Conductmetry
MS Type Conductivity Electrode
OUT
Polishing Stirrer

MagnetMS type conductivity electrode:
Polishing stirrer makes the smoothcontact of the sample water to theelectrode and keeps the surface of theelectrode in the best condition.

Conductivity
Electrode

Conductivity
Detector

WasteChamber

BubbleRemover

Measuring Unit
Controlled at 35 degC

NCV5Motor

Comparison between Conductometry and Ion-electrode method

5NH4+ (mg/L)

Potential (mV)

Potential (mV)
10V4NCP2P1P3P4V6NC

NC

P5

V1V3Reference

NC

10L

20L

NaOH

H2SO42L

HClReagent Reagent Reagent
123NC

2-points calibration isnecessary as reference
potential and slope areeasy to drift.

By the linear output and theauto zero function, you justhave to do span calibrationfor maintenance.

0V2

Calibration Curveby Ammonium Ion-electrode

Calibration Curveby Conductimetry(WHN-7030)

Membrane

Separate/Concentrate

INControlled
at 45 degC

Ammonium ion concentration can bemeasured by the conductivity changesof 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

StandardSolution

Washing
Water

SAMPLE

Schematic View
564

450

31234567891011121314151633

3435

36373839404142434445464748

6171819202122232425262728

2930

3132

51

52

53

5455

5657

58

5960

6162

63

64

Analyzing UnitPower SwitchUSB PortAC Power Input
BaseTelemeter Terminal Board
Sample Water Reservoir*Terminal for 4-20mA**Optional

P-3326 TT07

249

50

48

1600

1(216)

(200)
564

7370

450(376)

40500

(100)

4 -φ14370

SAFETY CONCERNS

5500for 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 thatthe 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, JAPANTEL +81-6-6768-3401

Note) Specifications are subject to change without the notice for the improvement.

FAX +81-6-6764-7040E-Mailsales@kimoto-electric.co.jp

Web Site

http://www.kimoto-electric.co.jp/
WNH7030/57-01