316L Online Digital ORP Sensor for Water Measurement

The ORP value in water directly reflects changes in the concentration of oxidizing substances such as chlorine, Ozone, and hydrogen peroxide, or reducing substances such as sulfide, nitrite, and organic matter. Abnormalities in these substances can directly threaten water quality safety. The core of online monitoring of water's ORP value（oxidation-reduction potential）is to capture changes in the redox state of water in real time and continuously, solving pain points such as offline detection lag, large errors in manual testing, and difficulty in predicting risks, ultimately achieving precise control of water quality safety, process efficiency, and environmental compliance. The use of offline ORP sensors allows for continuous, real-time monitoring of water’s ORP value. When used in conjunction with an online ORP controller, it can realize more functions such as display, data output, linked dosing, alarm system, historical records, and more.

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The ORP Sensor housing features 1-inch NPT thread at both ends and comes with a cleaning and protective cover.

The built-in RS485 port supports Modbus communication protocol, allowing connection to various industrial control devices for data transmission.

The ORP Probe head is replaceable, while the digital main unit remains unchanged, saving long-term costs.

The default digital cable is 5 meters, but custom length are available.

The IP68 production grade ensures long-term underwater use, but the separate cable must be protected from water when plugging and unplugging.

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Product Name	Digital ORP Sensor
Model	DRH890
Measuring Range	±2000mV
Resolution	±1mV
Accuracy	0.1% of the range or ±2mV
Communication	RS485
Response Time	T90＜10s
Working Pressure	4Bar
Working Temperature	0~60℃
Shell Material	316L
Dimension	37mm*280mm
Mounting Thread	1/digital-orp-sensor/'' NPT
Protection Grade	IP68
Power Supply	9~24V DC
Cable	default 5m

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Municipal water treatment: Real-time monitoring of disinfection effectiveness to ensure residual chlorine concentrations meet standards.

Aquaculture: Analyzing water oxidation capacity using ORP values ??to optimize fish and shrimp survival rates.

Food processing: Ensuring sanitary standards for cleaning water.

Environmental monitoring: Tracking industrial wastewater treatment processes to mitigate the risk of excessive discharge.