How to solve the inaccurate detection data of gas detectors
Gas detection is a necessary task for safety protection. Gas detectors can effectively ensure gas detection in limited spaces and ensure the safety of the space. But sometimes there may be inaccurate detection data in the use of gas detectors, so how can we solve the problem of inaccurate detection data in gas detectors?
Before solving this problem, we first need to understand the concepts of two phenomena: concentration in a normal environment:
1. If the instrument reading is greater than 23% VOL, it indicates that the instrument is floating upwards, which is caused by long-term over range detection.
2. If the instrument reading is less than 19.2% VOL, it indicates that the instrument is drifting downwards. The main cause of this phenomenon may be a decrease in instrument sensitivity or a blockage in the sensor filter, causing the instrument to sense a decrease in oxygen content.
If the above two phenomena occur, the first step is to perform a zeroing operation. The operation steps are as follows:
This operation can only be performed when the gas detector experiences drift in clean air without corresponding gas. Users only need to hold the instrument in clean air and adjust the value to 20.9% VOL.
The above solutions for inaccurate detection data of gas detectors are shared here. As an instrument and tool for detecting gas leakage concentration, gas detectors are widely used in various places such as petrochemical, coal, metallurgy, chemical, municipal gas, and environmental monitoring for on-site detection.
