How to avoid electromagnetic influence by using combustible gas detector?
The combustible gas detector is a detector that responds to the concentration of a single or multiple combustible gases. There are two types of combustible gas detectors: catalytic type and infrared optical type. When the combustible gas enters the detector, it will cause an oxidation reaction (flameless combustion) on the surface of the platinum wire, and the heat generated will increase the temperature of the platinum wire, and the resistivity of the platinum wire will change. So how to use the combustible gas detector to avoid the influence of electromagnetic?
1. There are three main paths for the electromagnetic environment to affect combustible gas detectors: 1) interference of electromagnetic waves in the workplace; 2) narrow pulse groups on power supplies and other input and output lines in fixed gas detectors; 3) static electricity generated by the human body .
2. When using a combustible gas detector, care should also be taken to avoid high temperature, high humidity, steam, oily smoke, etc.
3. Because explosion accidents may occur in many factories, we should choose an explosion-proof combustible gas detector when choosing a detector. The explosion-proof level should not be lower than the corresponding level in the current regulations. The first number stands for dustproof, which can completely prevent dust from entering, which is the highest level of dustproof. The second number represents waterproof, even if the fuselage is wet by sudden rain, it can be refurbished.
In addition, all kinds of combustible gas detectors have their fixed inspection range. Only within the specified inspection range can the correctness and accuracy of the detection data of the gas detector be guaranteed. The output value is not accurate and cannot be used as correct data. Therefore, the combustible gas detector can only be used within the specified range.
