The four-in-one gas detector, also known as a multifunctional gas detector in general, can detect the concentration of 4 kinds of gases at the same time. However, different sensors are required to detect different types of gases. Therefore, the four-in-one gas detector supports a variety of sensors and can detect more than ten kinds of gases, including oxygen, combustible gases and toxic gases. So do you know how the four-in-one gas detector sensor works? The following is a brief introduction by yi yun Tian:

four-in-one gas detector sensor principle:

The four-in-one gas detector mainly detects various gases and their concentrations through various gas sensors, and The gas concentration is transmitted to the gas detector for processing. If the concentration exceeds the limit, an alarm will be issued.

At present, the sensors used by the four-in-one gas detector to measure the concentration of toxic substances are mostly electrochemical sensors, which are based on The sensor works on the principle of electrochemistry, and the electrolyte is mainly affected by its life. After 2 to 3 years, the electrolyte will no longer work normally, therefore, the service life of electrochemical sensors is 2 to 3 years. Most of the sensors used to detect the concentration of combustible gases are catalytic combustion sensors, and their service life is 3 to 5 years. Although there are many kinds of sensors used in the four-in-one gas detector, when detecting different gases, the sensors used are different. No matter what principle the sensor is used, it is detected by a relative comparison method.

Our four-in-one gas detector can replace the sensor, but it does not mean that our instrument can be equipped with different probes at any time.However, when the working time of the four-in-one gas detector becomes longer, its accuracy is bound to decrease due to the loss of the sensor, the use environment or the interference gas of the instrument itself. At this time, in order to ensure the accuracy of the four-in-one gas detector, it is very necessary to test and calibrate the gas detector. Therefore, when we replace the sensor for the customer's four-in-one gas detector, in addition to the necessary activation time of the new sensor, we will also recalibrate the instrument that has replaced the sensor at this time.

In summary, it is the principle of the four-in-one gas detector sensor. In general, the default detection settings of the four-in-one gas detector are oxygen, combustible gas, hydrogen sulfide and carbon monoxide. However, you can also match the 4 gases to be detected at will according to the needs of the working environment. It should be noted here that different sensors will interfere with each other, so you should consult Yiyuntian manufacturer in detail before purchasing.