How to maintain the operational accuracy of gas detectors?
A gas detector is an instrumentation tool that uses sensors to detect the concentration of various toxic and harmful gases in the environment.
According to the way of use, it can be divided into two types: fixed and portable.
During use, what should we do to maintain the accuracy of the gas detector?
You need to develop the following four habits:
1. Cultivate the habit of zeroing
After each use, we should check whether the detector is back to zero, and if not, reset it to zero to ensure the accuracy of the test data and develop a good habit.
2. Develop the habit of regular calibration and calibration
Regular calibration and calibration can keep the instrument with good detection accuracy.
Firstly, the instrument is calibrated with zero point gas and standard concentration gas, and the standard curve is obtained and stored in the instrument.
During measurement, the instrument compares the electrical signal generated by the gas concentration to be measured with the electrical signal of the standard concentration, and calculates the accurate gas concentration value.
3. Do not exceed the measurement concentration range
To detect different toxic and harmful gases, there is a fixed concentration detection area. In the standard concentration area, the gas detector can accurately measure the gas concentration value, but if the high-concentration gas exceeds the measurement range for a long time, it may cause damage to the sensor, thereby affecting the detection effect and service life of the detector, or even directly cause damage to the sensor.
4. Pay attention to temperature and humidity
Different temperature and humidity also affect the normal detection of gas detectors,
If the temperature fluctuations in the detection environment are large, the detection results of the gas detector may drift. In this case, the gas detector should be calibrated on site to minimize the influence of temperature on the gas detector detection results.
Similarly, if there is a lot of rain in the detection environment, without any protection for the gas detector, rainwater intrusion into the gas detector will also affect its detection accuracy.
