ISO9001:2015 quality certified


KWS280 Online high performance-price ratio nitrite in water sensor



KWS280 Online nitrite in water sensor is used in environmental water quality monitoring, acid/alkali/salt solution, chemical reaction process, industrial production process, especially in beverage food and it can meet the requirements of online nitrite measurement for most industrial applications and food processing field.


  • Signal output: RS-485 (Modbus/RTU protocol).
  • Convenient connection to third-party equipment such as PLC, DCS, industrial control computer, general controller, paperless recording instrument or touch screen.
  • Double high-impedance differential amplifier with strong anti-interference and fast response.
  • The patented sonde for food application.
  • Easy to install: 3/4 NPT pipe thread for easy submersible installation or installation in pipes and tanks.

Technical Specifications

Model KWS280
Measuring Range 0.1-1000mg/L Can be expanded by customer order.
Accuracy Nitrite: ±2.5% F.S.


Resolution 0.1
Temperature Range 0 ~ 50℃
Work Pressure <0.2MPa
Temperature Compensation automatic temperature compensation
Output RS-485, MODBUS protocol
Power Supply 12~24VDC ±10%
Wetted Part Material PP
Installation Immersion mounting, 3/4 NPT thread
Cable Length 5 m, customizable
Calibration Method Two-point calibration
Power Consumption <0.5W
Ip Grade IP68


KWS280 Online nitrite in water sensor
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