How to avoid electromagnetic influence when using combustible gas detector?
A combustible gas detector is a detector that responds to single or multiple combustible gas concentrations. There are two types of combustible gas detectors: catalytic type and infrared optical type. When combustible gas enters the detector, it causes an oxidation reaction (flameless combustion) on the surface of the platinum wire. The heat generated increases the temperature of the platinum wire, and the resistivity of the platinum wire changes. So how to avoid the influence of electromagnetism when using a combustible gas detector?
1. There are three main paths for the electromagnetic environment to affect combustible gas detectors: 1) Interference from 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, you should also pay attention to avoid high temperature, high humidity, steam, oil fume, etc.
3. Because explosion accidents may occur in many factories, we should choose explosion-proof combustible gas detectors when choosing detectors. The explosion-proof level should not be lower than the corresponding level in current specifications. The first number represents dustproof, which can completely prevent dust from entering. It is the highest level of dustproof. The second number represents waterproofing. Even if the fuselage is wetted by sudden rain, it can be refurbished and used.
In addition, various combustible gas detectors have their own fixed inspection range. Only within the specified inspection range can the correctness and accuracy of the gas detector detection data be guaranteed, and the detection data that exceeds the detection range for a long time can be guaranteed. The numerical values obtained are inaccurate and cannot be used as correct data. Therefore, the combustible gas detector can only be used within the specified range.
The above information on how to avoid electromagnetic effects when using a combustible gas detector is shared here. I hope this article will be helpful to everyone.
