KZNH3-210 Ammonia Nitrogen Sensor
The KZNH3-210 ammonia nitrogen sensor is equipped with a replacement membrane and a 316L stainless steel body.
Besides, it offers automatic temperature compensation that is excellent for long term online monitoring of wastewater.
KZNH3-210 Ammonia Nitrogen Sensor
1. Core Advantages:
Digitally Output
Being a digital sensor, it transmits information via RS‑485 port.
Compatible with MODBUS/RTU communication protocol as well.
Automatic Temperature Compensation
A mini built-in temperature sensor is placed inside the measuring rod.
The compensation based on temperature is carried out as a measuring function.
Low Maintenance Cost
The design makes a use of replaceable ammonium ion membrane cartridge structure.
The design effectively keeps overall long-term maintenance expenses very low.
Easy Installation
It uses standard 3/4 inch G thread mounting structure to connect with a pipe or vessel.
The feature enables fast and easy on-site installation.
Anti‑Interference
With low power consumption and a special anti-interference circuit,
its built-in pH and potassium ion compensation significantly reduces the influence from external interference signals.
316L stainless steel housing offers the best corrosion resistance.
2. Technical Specifications:
Measuring Range | 0~10.0mg/L or 0~100.0mg/L (pH range 4-10) |
Operating Conditions | 0~30°C, <0.2MPa |
Response Time | 10m (secondized); 30m default, 30 seconds (T90) |
Dimensions | Φ38 × 181.5mm |
Cable Length | 10m (default, customizable) |
Housing Material | 316L stainless steel |
Communication | RS-485 digital signals, MODBUS/RTU protocol |
3. Low-Maintenance Design & Long Service Life:
Through the use of high-strength ion- selective electrode and improved anti-fouling membrane KZNH3-210 ensures that manual daily maintenance is almost unnecessary.
It simply needs a monthly visual inspection and a calibration every one to three months.
Optional automatic cleaning function may reduce labor cost up to 80%.
Under normal use, the replaceable electrode membrane lasts from 6 to 12 months.
The stainless steel sensor body is capable of operating stably for 3 to 5 years in the typical wastewater environment.
This will guarantee the system can run steadily and prevent the unexpected stopping.

4. Seamless Integration with Industrial Automation Systems
This sensor connector is in full conformance with industrial standard.
It has a standard RS485 Modbus RTU and 4-20mA analog output supported.
It is compatible and pluggable with PLC, control cabinet and SCADA.
It fits all widely used industrial control systems nowadays.
Three installation modes are available for the sensor immersion type, pipeline type and mounting on the side-wall.
They are used in many different water quality monitoring sites like the wastewater treatment plants and ponds.

5. High-Precision Measurement with Full Environmental Compensation
Adopts advanced ISE technology design.
Integrated pH, temperature and potassium ion automatic compensation are all equipped.
KZNH3-210 reaches laboratory level measuring accuracy at ±5% FS or ±0.2 mg/L.
It maintains stable performance even under complicated and changing water quality conditions.
It avoids reading deviation caused by external environmental interference.
Keeps data steady for important application scenarios.
These include wastewater denitrification control, aquaculture water quality management and surface water eutrophication evaluation.

6. Ammonia Nitrogen Sensor Electrode Quality Control:
We are a professional supplier covering ammonia nitrogen sensor, water quality ammonia sensor, online ammonia nitrogen monitoring sensor and industrial wastewater ammonia sensor electrode series.
We own a full set of formal qualification certifications.
These certificates prove our consistent standard on product quality, operation safety and technical innovation.

7. Project Cases:
Our full line ammonia nitrogen sensor products and matched automation solutions have been put into actual use.
Typical sites include wastewater treatment plants, municipal water supply stations, medical institutions and university research supporting facilities.

8. Our Factory
Established in 2009
Factory area: 15,000 m
R&D personnel: 50+
Industry experience: 20+ years
Production lines: 4+
Annual output: 100 units per month
Export coverage: Asia, Europe, Middle East, North America & South America
We mainly produce Low Voltage Withdrawable Switchgear, MNS Electrical Switchgear, Industrial LV Withdrawable Cabinet, Withdrawable Type Switchgear and LV Power Distribution Switchgear.
We also provide intelligent automation solutions for water supply and sewage treatment projects.



