1. Convenience
Light weight, small size, easy and comfortable wearing, easy maintenance.
2. Applicability
Enterprise professionals and on-site experienced operation supervisors or employees should identify and evaluate the hazardous gases in the limited space operation site to determine whether the sensor of the selected detector meets the needs of use.
3. Correction requirements
Calibration method, duration, and ease of use. There are two calibration methods - laboratory and field calibration. Field calibration is to exhale the oxygen sensor, the oxygen reading of the instrument must drop and an alarm occurs.
4. Reliability
The longer the sensor life of the gas detector, the better. Generally speaking, the sensor life is at least 2 years, and the 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 period is usually 2 years.
5. Stability
What is the value of the zero offset and full amplitude offset of the detector, the smaller the better.
6. Reliability
The longer the sensor life of the gas detection alarm, the better. Generally speaking, the sensor life is at least 2 years, and the 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 period is usually 2 years.
7. Ease of identification
Numerical or pointer gas detectors. Generally speaking, numeric types have the advantages of being easy to read and less false positives. Whether the display area is large enough, with background lighting and large fonts, for easy reading and understanding. Whether the siren is loud enough to distinguish it from background noise. It is usually applicable with an effect of more than 90dB(A). Whether the warning flashing light can be recognized from various angles. Whether the signal can be continuously displayed with the change of the measured gas concentration, and the alarm will be stopped after confirmation or countermeasures are taken.
