What criteria should I not miss when choosing a gas detector?
Petroleum, chemical, metallurgical, electric power, iron and steel industries, occasionally gas leakage events, not only affect the normal production and operation of the enterprise, but also endanger the personal safety of the workers on the scene, so you need to use the gas detector for real-time detection of gas concentration values. But when customers face many kinds of gas detector, how to choose the gas detector to meet their needs?
Select the gas detector can not miss the following criteria:
Stability: the detector zero offset and full amplitude offset value is how much, the smaller the better.
Convenience: light weight, small size, easy and comfortable to wear, easy maintenance.
Calibration requirements: calibration method, duration, and ease of use. There are two types of calibration - laboratory and field calibration. Field calibration involves exhaling into the oxygen sensor and the instrument's oxygen toxicity value*** drops and an alarm occurs.
Accuracy: The longer the life of the gas detector sensor, the better, in general, the sensor life of at least 2 years, combustible gas sensor is 2 ~ 5 years. The longer the average error time, the better. What is the accuracy and precision, the smaller the error value, the better. The product warranty is generally 2 years.
Applicability: Hazardous gases at the site of limited space operation should be identified and evaluated by the enterprise professionals and experienced operation supervisors or employees on site to determine whether the sensor of the selected detector meets the usage requirements.
Ease of identification: numerical or pointer type gas detector. Generally speaking, the numerical type has the advantage of being easy to read and having fewer false positives. Whether the display area is large enough to be easily read and understood with background illumination and large fonts. Whether the alarm is loud enough to be distinguishable from background noise. Generally 90dB(A) or above is suitable. Whether the flashing light can be recognised from various angles. Can the signal be displayed continuously as the concentration of the measured gas changes, and the alarm is stopped only after confirmation or countermeasures have been taken.
