Everyone knows that many testing items must be supported by corresponding sensors. Therefore, in daily use, everyone is also extra careful with these sensing elements, especially some portable water quality testing instruments. Although these sensors are all precision types of components, sometimes errors may occur in use. For example, when testing industrial wastewater, ORP measurement data is very important. But in actual operation, there are some factors that will affect the detection result of ORP sensor.
Therefore, you must pay attention to two important factors when using a water quality analyzer to test ORP data. The first factor: the influence of water temperature on the measurement results during the test. The second factor: the problem of the ORP sensor of the analyzer.
First of all, let's talk about the influence of water temperature when detecting ORP. Anyone familiar with water quality analysis instruments knows that the working principle of ORP sensor is measured by the inert metal platinum of the sensing probe. Because the ORP sensor probe does not have temperature compensation. Some ORP sensors that have been used for a long time are easily affected by the temperature of the water body, which leads to errors in the voltage output of the sensor. Therefore, when analyzing the ORP data of the water quality, it is necessary to calibrate according to different temperatures.
The second is the problem of the ORP sensor itself. For example, the ORP sensor probe is subject to some external pollution, which may cause errors in the analysis results.
In the daily use of water quality analyzer to detect ORP data, if the ORP sensor probe is found to be contaminated by external substances, it should be cleaned as soon as possible. In general, most of the cleaning methods are first soaked and then cleaned. Generally, it can be used The special cleaning agent is used for soaking, but we need to remind everyone to avoid damaging the glass bulb of the sensor during the process of wiping with a cotton swab.
The ORP sensor is mainly used for the oxygen reduction potential of the solution. It can not only detect the water body, but also detect the ORP data in the soil and the culture medium. Therefore, it is also the sensor with the most application fields. Usually it will be combined with the PH sensor. use.
Finally, I will introduce a water quality sensor imported from Germany by Gongcai.com-ORP sensor. This sensor combines the existing CTD detection system to develop an integrated shallow water sensor and integrated electronic equipment. The sensor consists of a pressure-balanced platinum electrode and a reference electrode (ag/agcl) on a plastic rod. It is equipped with a ceramic diaphragm with a large number of pores. This electrolyte is a kind of KCl, contains a gel that does not contain silver ions, and can also be measured in H2S and sulfide. The company's shallow water sensor is equipped with a titanium housing, including electronic equipment, a plastic protective cover and a black hole 4 M grade titanium alloy connector. At your own risk, the protective cover may be unscrewed. The sensor must be calibrated by the customer (calibrated as required). All electrodes are completed by a wet cap with 4 buffers/kcl pH value and covering the measuring end.
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