How is a gas detector calibrated, and what are the corresponding calibration steps?
In general, gas detectors need to be calibrated once a year, and those with strict requirements for accuracy may even be calibrated every six months or every three months. The more times calibration is performed, the less likely the detector is to drift and the better the detection effect.
The calibration of a gas detector can be carried out by first calibrating the instrument with a zero gas and a standard gas. The instrument will store the obtained standard curve. When the gas detector is working in the measured environment, the instrument will compare the signal generated by the detected concentration of the measured gas with the standard curve stored during calibration, and then calculate the concentration value of the measured gas.
Regularly zeroing and calibrating instruments at any time are essential tasks to ensure accurate measurement. It should be noted that although many gas detectors currently have replaceable detection sensors, this does not mean that a detector can be equipped with different detector probes at any time. Whenever replacing the probe, in addition to requiring a certain sensor activation time, the gas detector must also be recalibrated. In addition, it is recommended to perform corresponding testing on the standard gas used in various instruments before use to ensure that the gas detector truly plays a protective role.
If this type of instrument is used as a safety alarm in an open environment, such as an open workshop, a portable diffusion gas detector can be used because it can continuously, real-time, and accurately display the concentration of toxic and harmful gases on site.
Calibration is generally a simple and convenient process that only requires two steps:
1, Zero the instrument in "air" that does not contain the gas to be measured.
2, Place the instrument in a standard gas containing a known concentration for calibration.
For those in the security industry, portable detectors must be precise, reliable, and not allow for any carelessness. Correctly and regularly calibrating and maintaining the testing instrument is an essential method, which shows how important calibration is.
