This is an industrial grade online nitrate ion sensor that uses PVC membrane ion selective electrode method to detect nitrate concentration in water in real time. The default range is 0~100 mg/L (optional 0~1000 mg/L), with an accuracy of ± 5% or ± 2 mg/L, and a response time of less than 60 seconds. Built in Pt1000 automatic temperature compensation, supports RS-485 (Modbus RTU) output and optional 4-20mA, making it easy to connect to PLC, DCS and other systems. 3/4 NPT thread installation, IP68 protection, optional POM+316L corrosion-resistant material for housing, suitable for sewage treatment, surface water monitoring, pipeline and tank immersion measurement.

The online nitrite ion sensor adopts PVC membrane ion selective electrode method, designed specifically for online monitoring of nitrite concentration in water quality. The measurement range is 0~2.000 mg/L, with an accuracy of ± 5%, and built-in Pt1000 automatic temperature compensation. Output RS485 (Modbus RTU) signals, which can be easily connected to PLC, DCS, and industrial control systems. The shell is made of 316L stainless steel, with a protection level of IP68, and supports 3/4NPT threaded immersion installation. The sensor has undergone two-point calibration before leaving the factory and has long-term stability, suitable for various working conditions such as pipelines and water tanks.

The online chloride ion sensor adopts a highly stable solid-state membrane ion selective electrode, designed specifically for real-time monitoring of chloride ion concentration in water quality. The measurement range covers 0~3500 mg/L or 0~35000 mg/L, with an accuracy of ± 5% of the reading and fast response (T90<60s). Built in Pt1000 automatic temperature compensation ensures accurate data. Supports RS-485 (Modbus RTU) and optional 4-20mA output, making it easy to connect to systems such as PLC and DCS. IP68 protection level, corrosion-resistant POM/316L shell, 3/4 "NPT thread, can be submerged or installed in pipelines. The electrode has a long lifespan, simple calibration, and is suitable for industrial wastewater, surface water, and other scenarios.

This RS485 water quality potassium ion sensor is designed specifically for online monitoring, using an industrial grade durable housing and a high-sensitivity potassium ion selective electrode for stable and reliable measurement. Supports Modbus RTU protocol and can be directly connected to water quality monitoring systems to achieve remote data collection. Equipped with automatic temperature compensation function, effectively reducing environmental interference; IP68 protection level, capable of long-term immersion work, suitable for complex scenarios such as surface water, groundwater, aquaculture drainage, and industrial wastewater. Low power design, wide power supply range, flexible installation method. Assist users in real-time monitoring of changes in potassium ion concentration in water bodies, aiding in precise water quality management and process control.

The RS485 water quality sodium ion sensor adopts the ion selective electrode method to monitor the concentration of sodium ions in water in real time. It has RS485+Modbus RTU output and is suitable for industrial networking. IP68 protection, wide temperature operation, automatic temperature compensation, strong anti-interference, low power consumption, long-term stability. No need for reagents or in-situ measurement, suitable for scenarios such as drinking water, aquaculture, industrial circulating water, boiler water, etc., to assist in water quality safety and process control.

ZW-CA-PR integrated online calcium ion sensor adopts PVC membrane-based calcium ion selective electrode to test water calcium ion content, with temperature compensation for fast, accurate and economical testing. It features RS-485/Modbus/RTU signal output, patented stable reference system, 3/4NPT easy installation and IP68 protection level, suitable for various water quality online detection.

This product is an industrial grade RS485 magnesium ion sensor that uses Modbus RTU digital communication to achieve online magnesium ion concentration meter function. Featuring high precision and corrosion resistance, it is suitable for monitoring magnesium ions in industrial wastewater, softening boiler water, and real-time analysis of water hardness. As a digital magnesium ion probe, it can be directly connected to the automation control system, which is stable and reliable, meeting the long-term operation and maintenance needs of environmental protection and industrial field for online monitoring of water quality magnesium ions.

The RS485 fluorescence chlorophyll sensor adopts advanced fluorescence technology and is designed specifically for online water quality monitoring. Built in self-cleaning brush head, effectively preventing biological attachment and achieving maintenance free long-term operation. Supports MODBUS-RTU protocol and can directly output chlorophyll-a concentration data. The IP68 protection level is suitable for freshwater, marine aquaculture, eutrophication monitoring of lakes and rivers, and water source warning. High precision 0-400ug/L range, plug and play, is an ideal choice for in-situ monitoring and environmental protection projects.