The necessity of sewage monitoring
With the development of society, the increasing demand for water supply in agriculture, industry and cities has led to a greater shortage of limited fresh water resources. Facing the problem of water shortage, strengthening sewage treatment has become the focus of everyone’s attention. In order to ensure the effect of sewage treatment, water environment sensors are installed to monitor water quality in all aspects of sewage treatment. Among them, conductivity measuring instruments are indispensable.
Selection of Probes in the Measurement of Sewage Conductivity
In the measurement of sewage, the selection of a suitable industrial conductivity meter becomes the basis for monitoring. K is the conductivity probe coefficient, where the lower the coefficient. The lower the conductivity range, but the higher the unit accuracy, the higher the coefficient, and the larger the conductivity range. But the unit accuracy is low. In general, the conductivity range of pure water is generally within 20us/cm, so you can choose a probe with K=0.01.
The conductivity of normal tap water or industrial water is within 200us/cm. So select the probe with K=0.1. Because sewage contains more ions, the conductivity is relatively large, generally greater than 1000us/cm. Generally choose to use the probe with K=1. If there are some concentrated solutions, nutrient solutions, and salt solutions, the general conductivity is greater than 10000us/cm. Need to choose K=10 probe.
Advantages of water conductivity sensor
There are many types of conductivity sensors to measure water quality, and the measurement range is wide. It can detect water quality in thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food and tap water scenarios. The measurement data has high accuracy and automatic calibration function. The measured conductivity value can also be corrected. Two communication methods of 485 and analog can be set remotely, which is convenient for data transmission. It is an indispensable instrument in sewage monitoring equipment. You can set the high and low values of the detection conductivity to alarm. Deal with abnormal situations in time, and water quality inspection and control work is faster and more convenient.