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info@inquiry@ato.com.cn How do You Know if Your Gas Detector is Working Properly?
Performance of the gas detector can be tested in the following aspects:
Precision
Precision is an important performance index of the gas detector and an important factor influencing precision of measurement results of the gas detector. Precision of the gas detector should be ±3% of the full range. The gas detector with a higher precision can achieve ±1% of the full range. The higher the precision is, the better the performance of the gas detector is.
Sensitivity (Response time)
The sensitivity of the gas detector might be controlled within the permissible concentration scope without any distortion. In practice, response of the gas detector might be delayed. The shorter the delay is, the better. If the gas detector has a high sensitivity, the measurement scope of the gas concentration is wide. Affected by structural characteristics, the initial of the mechanical system will be large. The concentration scope of measurable gases in the low-sensitivity gas detector is small. The higher the sensitivity is, the better the performance of the gas detector is.
T90: T90 refers to the time required by the concentration value displayed on the gas detector which ranges from 0 to 90% of the full range. Of course, the prerequisite is that the gas concentration of the environment to be measured should be more than 90% of the full range of the gas detector. Otherwise, the gas detector cannot reach T90 under whatever condition. The shorter T90 is, the better the performance of the gas detector is.
Stability
Stability refers to the stability of basic response of the gas detector within the whole working period. It is decided by the zero-point drift and section drift. The zero-point drift refers to changes of the reading response on the gas detector within the whole period of work time. The section drift refers to changes of the reading response when the gas detector is placed in target gases continuously. It is mainly reflected as decrease of the reading on the detector within the period of working time. Under ideal conditions, the zero-point drift of a gas detector is smaller than 10% under the continuous working conditions. The higher the stability is, the better the performance of the gas detector is.
Precision
Precision is an important performance index of the gas detector and an important factor influencing precision of measurement results of the gas detector. Precision of the gas detector should be ±3% of the full range. The gas detector with a higher precision can achieve ±1% of the full range. The higher the precision is, the better the performance of the gas detector is.
Sensitivity (Response time)
The sensitivity of the gas detector might be controlled within the permissible concentration scope without any distortion. In practice, response of the gas detector might be delayed. The shorter the delay is, the better. If the gas detector has a high sensitivity, the measurement scope of the gas concentration is wide. Affected by structural characteristics, the initial of the mechanical system will be large. The concentration scope of measurable gases in the low-sensitivity gas detector is small. The higher the sensitivity is, the better the performance of the gas detector is.
T90: T90 refers to the time required by the concentration value displayed on the gas detector which ranges from 0 to 90% of the full range. Of course, the prerequisite is that the gas concentration of the environment to be measured should be more than 90% of the full range of the gas detector. Otherwise, the gas detector cannot reach T90 under whatever condition. The shorter T90 is, the better the performance of the gas detector is.
Stability
Stability refers to the stability of basic response of the gas detector within the whole working period. It is decided by the zero-point drift and section drift. The zero-point drift refers to changes of the reading response on the gas detector within the whole period of work time. The section drift refers to changes of the reading response when the gas detector is placed in target gases continuously. It is mainly reflected as decrease of the reading on the detector within the period of working time. Under ideal conditions, the zero-point drift of a gas detector is smaller than 10% under the continuous working conditions. The higher the stability is, the better the performance of the gas detector is.
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