How is the gas detector calibrated and what are the steps
In general, gas detectors need to be calibrated once a year, and those with strict accuracy requirements may even be calibrated every six months or three months. The more times the 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 tested environment, the instrument will compare the signal generated by the measured gas concentration with the standard curve stored during calibration, and then calculate the concentration value of the measured gas.
Zeroing the instrument at any time and regularly calibrating it are essential tasks to ensure accurate measurement. It should be noted that although many gas detectors can replace detection sensors at present, this does not mean that a detector can be equipped with different detector probes at any time. At any time, when replacing the probe, in addition to requiring a certain amount of 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.
Generally, calibration is 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 with a known concentration for calibration.
For security industry partners, portable detectors must be precise, reliable, and cannot tolerate any carelessness. Correctly and regularly calibrating and maintaining the testing instrument is a necessary method, which shows how important calibration is.
In fact, both detector manufacturers and national regulations have regulations on calibration, which are usually divided into two categories: equipment manufacturers will require regular calibration, usually once every 2-6 months, to ensure that the instrument can work normally and effectively. Manufacturers recommend qualified users, distributors, or authorized service personnel from manufacturers to carry out instrument calibration work. The metrology regulations require that the number of calibrations must not be less than once every 12 months, and this calibration must be carried out by the national metrology department, which means it needs to be carried out at a third-party metrology institute.
