How do I calibrate my gas detector?
Gas detector is also the same as other analytical instruments, are measured by the method of relative comparison: first of all, a zero gas and a standard concentration of gas calibration of the instrument, get the standard curve stored in the instrument, the measurement, the instrument will be measured gas concentration of the electrical signal generated by the standard concentration of the electrical signal for comparison, calculated to get the accurate value of the gas concentration. Therefore, zeroing the instrument at any time and calibrating the instrument regularly are indispensable to ensure the accuracy of the instrument measurement. It should be noted that many gas detectors can replace the detection sensor, however, this does not mean that a detector can be used at any time with a different detector probe.
Whenever a gas detector is replaced, the instrument must be recalibrated in addition to the sensor activation time. In addition, it is recommended that before the use of gas detectors in all types of instruments, the instrument with a standard gas response test to ensure that the instrument really play a protective role. If it is in the open occasions, such as open work shop to use this type of instrument as ** alarm, you can use the diffusion gas detector worn with the body, because it can be continuous, real-time, accurate display of the concentration of toxic and harmful gases on the scene. Fixed detector is generally two-body type, there are sensors and transmission composed of the detection head as a whole installed in the detection site, there are circuits, power supply and display alarm device composed of the secondary instrumentation as a whole installed in the ** place, easy to monitor. Gas detector detection principle as described in the previous section, only in the process and technology is more suitable for fixed detection required by the continuous, long time stability and other characteristics.
Generally speaking, each sensor corresponds to a specific detected gas, but any one gas detector can not be accurate special effects. Therefore, in the selection of a gas sensor, should be as much as possible to understand the detection of other gases on the sensor interference, in order to ensure that it for the accurate detection of specific gases.
