Water Conductivity Sensor

Conductivity refers to the ability to conduct current in a body of water. In water quality monitoring, conductivity is one of the important indicators reflecting the quality of water quality. When the conductivity value of the water is higher, the conductivity is better, and the TDS value in the water is larger. The TDS value represents the content of dissolved impurities in the water. The larger the TDS value, the higher the impurity content in the water. On the contrary, the smaller the impurity content, the higher the water Pure, the lower the conductivity.

The conductivity of water can be measured with a conductivity detector. Put the conductivity probe into the water. Calculate the conductivity value by measuring the change in solution resistance.

Water conductivity sensors are used in water-quality applications to measure how well a solution conducts an electrical current. This type of measurement assesses the concentration of ions in the solution. The more ions that are in the solution, the higher the conductivity.

In normal use, the electrode will not be scratched or corroded and can be used all the time. If the electrode is damaged, the measurement accuracy will be affected, and the electrode needs to be replaced in time.

The temperature compensation of conductivity is to compensate the conductivity value at the current temperature to the conductivity value at the specified temperature (default 25°C). The temperature coefficient is the percentage value of the change in the conductivity of the solution with the temperature, and the percentage change in the conductivity when the temperature rises by 1℃. The default 0.02 (2%) approximates the temperature coefficient of conductivity of potassium chloride solution. The user can set the temperature coefficient value by himself to make the temperature compensation more accurate. The method is to first set the temperature compensation coefficient of the device to 0, and then measure the conductance in the same solution to be tested at two different temperatures (t1, t2) Rate value (g1, g2), and then use the formula to obtain the change in conductivity per 1°C increase Δg=(g1-g2)/(t1-t2), and then measure the conductivity of the solution under test at 25°C, g0 , The temperature coefficient can be calculated as: α= Δg/g0.

It is recommended to calibrate with a standard solution close to the conductivity value of the solution to be tested. If the conductivity value of the solution to be tested is not clear, select a standard solution close to the middle value of the range.

1. Submerged installation: the lead wire of the electrode passes through the stainless steel tube, and the 3/4 thread on the top of the electrode is connected with the stainless steel 3/4 thread with raw material tape. Make sure that no water enters the top of the electrode and the electrode wire.
2. Sidewall installation: The manufacturer provides a 316L full stainless steel sheath with a bevel, and the electrode can be screwed into the sheath.
3. Pipeline installation: connect to the pipeline through the electrode 3/4 thread.

Our water conductivity sensor has been calibrated before leaving the factory. If you need to calibrate it later, you can find a solution with a known conductivity to calibrate it yourself. In the case of long-term use, it is best to calibrate once every three months.

It is recommended to use plastic conductivity electrodes for non-corrosive water, such as: hydrological observation, water plant treatment, aquaculture, etc.
It is recommended to use stainless steel conductivity electrodes for corrosive water, such as environmental protection pharmaceuticals, food processing, sewage treatment, etc.

Under normal conditions, the electrode has a one-year warranty and the data collector has a two-year warranty.

Please contact us for the manual.