What factors will affect the detection accuracy of gas detectors?
A gas detector is an instrument dedicated to detecting the concentration of toxic and harmful gases. Widely used in fields such as petroleum, chemical, metallurgy, pharmaceuticals, etc. This is an indispensable safety equipment for the production line, requiring gas detectors to maintain the accuracy and stability of detection. However, the workshop environment is usually poor. Many factors can easily lead to inaccurate detection of gas detectors, and special attention should be paid.
Common factors that affect the detection accuracy of gas detectors include:
1. Impact gas
Taking catalytic combustion methane detectors as an example, they are mainly used to detect the concentration of methane gas, but will react with all flammable gases. If the concentration of combustible gases in the air is too high, it will affect the correct measurement of methane gas concentration, leading to deviation in instrument readings.
2. Pressure changes
When the pressure changes strongly, it can affect the reading of the oxygen sensor, leading to instability. Causing detector alarm.
On the other hand, if the percentage of oxygen volume remains around 20% and the pressure drops too much, the oxygen people breathe can become a dangerous source.
3. Humidity impact
For example, when entering a humid environment from a dry environment, the water vapor in the air will expel oxygen, resulting in a decrease in oxygen reading. Prolonged time can lead to error in the value of the oxygen sensor and also affect the detection of flammable gases. For example, catalytic combustion combustible gas detectors must accurately measure with sufficient oxygen content
4. Temperature influence
Strong changes in temperature may cause instability in instrument values. Although the oxygen sensor itself compensates for temperature changes to some extent, strong temperature fluctuations can still cause unstable readings.
In addition, gas detectors should be installed in different locations based on different gas types. If the installation position is incorrect, it not only fails to perform the detection function, but also causes false alarms or other faults, damaging the instrument. Therefore, during the installation and use of gas detectors, consumers must carefully read the product manual, consult specialized technical personnel if they are not familiar with the problem, or consult the manufacturer's customer service, and must not disassemble them at will.
