What are the factors that 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 in the production line, which requires gas detectors to maintain the accuracy and stability of detection. However, the workshop environment is often poor. Many factors can easily lead to inaccurate detection of gas detectors, and special attention should be paid.
The common factors that affect the detection accuracy of gas detectors are:
1. Impact gas
Taking catalytic combustion methane detector as an example, it is mainly used to detect the concentration of methane gas, but it will react with all combustible 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 instrument reading deviation.
2. Pressure changes
When the pressure changes strongly, it will affect the reading of the oxygen sensor, leading to instability. Causing detector reporting.
On the other hand, if the percentage of oxygen volume remains around 20% and the pressure drops too much, the oxygen that people breathe will 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 drive away oxygen, causing a decrease in oxygen readings. Prolonged exposure to this can lead to errors in the value of oxygen sensors and also affect the detection of combustible gases. For example, catalytic combustion combustible gas detectors must be accurately measured with sufficient oxygen content
4. Temperature influence
Strong temperature changes may lead to unstable instrument values. Although the oxygen sensor itself has some compensation for temperature changes, strong temperature fluctuations can still lead to unstable readings.
In addition, gas detectors should be installed in different positions according to different gas types. If the installation is incorrect, not only will it fail to perform the detection function, but it will also cause false alarms or other malfunctions, 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 do not understand the problem, or inquire with the manufacturer's customer service, and are not allowed to disassemble them at will.
