Online ORP sensor

Online ORP sensorSpecially designed for real-time monitoring of water redox potential, using high-precision platinum electrodes and intelligent temperature compensation technology, it can accurately capture changes in the activity of oxidizing or reducing substances in water. Sensors have the characteristics of fast response and strong anti-interference ability, which are suitable for various scenarios such as sewage treatment, aquaculture, and drinking water disinfection. It has a high level of protection and supports long-term stable operation in complex water quality environments. Data can be transmitted through standard signals or wireless methods to help users adjust process parameters in a timely manner, ensuring water treatment effectiveness and ecological safety.

1、 Application Environment Description

Online ORP sensorUsed for environmental water quality testing and various high/low ion strength water sample testing, it can meet the requirements of most industrial/environmental applications for online ORP measurement.

Signal output: RS485 (MODBUS-RTU).

The indicator electrode is a platinum plate with high stability.

Internal signal isolation technology with strong anti-interference ability.

Good reproducibility, thermal stability, low drift, small size, fast response speed

Easy to install, simple, 3/4NPT pipe thread, easy to sink or install in pipelines and tanks, stable performance, long service life

IP68 waterproof standard

2、 Technical parameters

3、 Installation and electrical connections

1. Installation

Attention: The sensor should not be installed upside down or horizontally, and should be installed at an angle of at least 15 degrees.

2. Electrical connection

The cable is a 5-core shielded wire, and the line sequence is defined as brown - power line (12~24VDC)

Black Ground (GND) Green 485B

Yellow -485A

Before powering on, carefully check the wiring sequence to avoid unnecessary losses caused by wiring errors.

4、 Maintenance and upkeep

When used for the first time or left unused for a long time, the sensitive bulb and reference liquid should be immersed in a 3.3mol/L KCI solution for more than 2 hours.

Before use, rinse and dry with deionized water (or distilled water) to prevent impurities from entering the measured liquid. One third of the sensor should be inserted into the measured liquid.

The wiring terminal should be kept clean and dry, and the sensor should be cleaned when not in use. It should be inserted into a protective sleeve containing 3.3mol/L KCI solution or into a container containing 3.3mol/L KCI solution.

Check if the wiring terminals are dry. If there are stains, wipe them off and let them dry before continuing to use. Sensors should avoid prolonged immersion in deionized water, protein solutions, strong acid and alkali solutions, and acidic fluoride solutions, and prevent contact with organic silicone oils and fats. If the platinum plate of the electrode is stained with grease, it can be gently wiped clean with degreased cotton dipped in acetone or alcohol. If the dirt is insoluble inorganic matter, it can be wiped with 30-50% hydrochloric acid. It can also be wiped once a day with clean high-quality toilet paper.

When the sensor has been used for a long time and measurement errors occur, it can be calibrated and corrected by cooperating with the instrument. If the above methods of maintenance and upkeep still cannot calibrate and measure the sensor, it indicates that the sensor has failed and should be replaced.