What are the mistakes in the use of gas detectors, and what are the precautions?
A gas detector is an instrumentation tool for gas leakage concentration detection, including: portable gas detectors, hand-held gas detectors, fixed gas detectors, online gas detectors, etc., mainly using gas sensors to detect The type of gas that exists, the gas sensor is a sensor used to detect the composition and content of the gas. In the process of using the gas detector, the reason why the gas detector cannot be used or damaged is that the quality factor is only a part of choosing an ordinary manufacturer, most of which are caused by improper selection and improper use. So do you know what are the misunderstandings in the use of gas detectors?
What are the misunderstandings in the use of gas detectors, and what are the precautions?
Misunderstandings in the use of gas detectors:
Acceptance error: Test with high-concentration gas: After installing the combustible gas detector on site, the customer uses a lighter to test whether the detector works normally. After the ventilation test, the detector alarms but cannot be reset to zero. In normal use, after the sensor is detected to be damaged, all return to the factory to pay for the replacement.
Analysis: Many customers like to use high-concentration gas for testing during acceptance. This method is very inaccurate and can easily cause damage to the instrument. The detection range of the combustible gas detector is 0~100%LEL, the lower explosion limit is low (methane is 0~5%vol), and the lighter gas is high-purity butane, which is far beyond the detection range.
Test error: When using a lighter gas for testing, the sensor will be impacted 2 to 3 times or more, and the chemical activity of the sensing element will decay or deactivate in advance, resulting in a decrease in detection. The platinum wire was blown and the sensor was scrapped. It should be noted that the manufacturer cannot guarantee the failure of the sensor caused by the impact of high-concentration gas, and it needs to be replaced at its own expense.
