What are the principles used to calibrate methane detectors?
Methane gas detector is an instrument mainly used to measure methane content. It can continuously detect the concentration of methane in the working environment of flammable, explosive and flammable gas mixtures. It is widely used in coal mines, petroleum, chemical and other industries. Because of its wide range of applications, it is recognized by many companies as a necessary production material. In the use of methane gas detectors, calibration principles are an aspect that we must attach great importance to. So do you know the calibration principles of methane gas detectors?
In principle, the calibration of methane gas detectors should use standard gas that has been certified by metrology and matches the gas being detected. First of all, before calibrating the methane gas detector, we should ensure that the surrounding environment of the flammable gas detector should be free of flammable gases. If there is flammable gas, remove the rain cover first, fill it with a certain amount of clean air, and then continuously introduce sample gas to ensure the accuracy of the calibration.
When the measured gas is a hydrocarbon mixture, isobutane is the sample gas, followed by propane. For non-hydrocarbon mixtures or hydrocarbon mixtures that produce significantly different amounts of heat when burning gases with lower explosive limit concentrations, as a last resort, easily available and stable single-component fuels such as butane, isobutane, and propane can be used as samples. gas. At this time, the range of the alarm must be adjusted based on a certain detection signal conversion relationship. This also determines that the methane gas detector is a necessary data for enterprise production.
Secondly, this kind of methane gas detector is widely used in environments or mines containing methane or coal dust explosion hazards. Workers use it to measure methane content, and the operation is simple and convenient. When a methane gas detector in an industrial environment detects that the methane concentration reaches a critical point, it will send out an alarm signal to ensure safe production, property safety, and the safety of staff. It can be seen that methane gas detectors are necessary production materials for enterprises. , relevant companies should prepare one to prevent danger.
