Online ORP Sensor

one. Online ORP Sensor application environment description

Online ORP Sensor is used for continuous ORP monitoring of various water quality in grassland, pasture, plant culture, scientific experiments and other industries.It is used for environmental water quality testing and various high/low ionic strength water sample testing, and can meet the requirements of most industrial/environmental applications for online ORP measurement.

Signal output: RS485 (MODBUS-RTU).

The indicating electrode is a platinum piece with high stability.

Internal signal isolation technology, strong anti-interference.

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

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

IP68 waterproof standard

two.Online ORP Sensor technical parameters

three.Online ORP Sensor installation and electrical connections

1.Installation

Note: The sensor cannot be installed upside down or horizontally, and must be installed at an angle of at least 15 degrees.

2.Electrical connection

The cable is a 5-core shielded wire, wire sequence definition: brown - power cord (12~24VDC)

Black - Ground (GND) Green - 485B

Yellow-485A

The wiring sequence should be carefully checked before powering on to avoid unnecessary losses caused by wiring errors.

Four.Online ORP Sensor maintenance and care

When used for the first time or not used again for a long time, the sensitive bulb and reference junction should be immersed in 3.3mol/L KCI solution for more than 2 hours.

Before use, it should be washed and dried with deionized water (or distilled water) to prevent impurities from being brought into the liquid being measured.1/3 of the sensor should be inserted into the liquid being measured.

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

Check whether the terminal block is dry.If there is any stain, please wipe it with absolute alcohol and dry it before continuing to use it.The sensor should avoid being immersed in deionized water, protein solution, strong acid and alkali solution, and acidic fluoride solution for a long time, and prevent contact with silicone grease.If the platinum piece of the electrode is stained with grease, you can use absorbent cotton dipped in acetone or alcohol and gently scrub it clean.If the stain is insoluble inorganic matter, you can scrub it with 30-50% hydrochloric acid.You can also use clean water every day.Use high-grade toilet paper once.

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 sensor cannot be calibrated and measured after maintenance and maintenance in the above manner, it means that the sensor has failed.Please replace the sensor.