Is there a specific value (or benchmark) of sensitivity for the sensor to be considered as good in detecting gas?
Sensitivity of a sensor or transducer is defined as the 'absolute limit of detection' or 'absolute minimum threshold of detection' - in short what is the lowest level of the parameter in question that the sensor or measuring system can detect without there being a high degree of error in the measurement.
In the case of a gas (above e.g) this needs to be established as the lowest concentration level at which the sensor can produce a constant output which excludes signals interfering with the actual limit of detection. The value of the limit of detection is determined by comparing the 'detector's' output deviation under static conditions against a level of gas concentrations at which the detector or sensor gives an undeviating output over the interfering noise equivalent factor.
For any given sensor there is no absolute benchmark other than the one specific to the measurement in question.
Respected Dr. Barrie Charles, thanks a lot for your answer.
Best regards,
Mubashar Ali
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