Water PH Sensor

one.Water PH Sensor application environment description

Water PH Sensor is a device used to measure the pH value (hydrogen ion concentration index, pH) of a solution, used for pH testing of drinking water and other low ionic strength liquids.It is used for environmental water quality detection and various high/low ionic strength water sample testing, which can meet the requirements of most industrial/environmental applications for online pH measurement.

Signal output: RS485 (MODBUS-RTU), 4-20mA current output.

Low-impedance sensitive glass film, internal signal isolation technology, strong anti-interference.

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

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

IP68 waterproof standard

two.Water PH Sensor Technical Parameters

three.Water PH Sensor Installation and Electrical Connection

1.Installation

Note: The sensor cannot be installed inverted or horizontally when installed, and should be installed at least 15 degrees above the angle of inclination.

2.Electrical connection

The cable is a 5-core shielded wire, and the line sequence is defined:

Brown - Power cord (12~24VDC) Black - Ground cord (GND)

Green-485B Yellow-485A

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

Four.Water PH Sensor Maintenance and Maintenance

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

When using, wash and wipe dry with deionized water (or distilled water) to prevent impurities from being brought into the liquid to be tested.1/3 of the sensor should be inserted into the liquid to be tested.

The terminal part should be kept clean and dry.When the sensor is not in use, it should be cleaned.Insert the protective cover with 3.3mol/L KCI solution, or insert the sensor into a container with 3.3mol/L KCI solution.

Check whether the terminals are dry.If there are any stains, wipe them with anhydrous alcohol and continue to use them after drying.The sensor should avoid long-term soaking in deionized water, protein solutions, strong acid and alkali solutions, and acid fluoride solutions, and prevent contact with silicone grease.The sensor that has been used for a long time may become translucent or contain deposits.At this time, it can be washed with dilute hydrochloric acid and rinsed with water.

When the sensor has a long service life, it can be calibrated and corrected by matching the instrument.When the sensor is maintained and maintained by the above method, it means that the sensor has failed.Please replace the sensor.