Answer :
Final answer:
A gas monitor that has not been calibrated for a specific combustible gas will likely provide inaccurate readings. Calibration is necessary for accurate detection and concentration measurement. Automatic shutdown is not a standard response to lack of calibration. The correct option is 2.
Explanation:
When a gas monitor is sampling a combustible gas for which it has not been calibrated, the most likely outcome is that the gas monitor will provide inaccurate readings. Calibration ensures that the sensor's response corresponds accurately to the gas concentrations.
Without proper calibration for the specific gas being measured, the monitor's output may not reflect the true concentration, potentially resulting in false negatives or an inability to determine the appropriate hazard level.
Automatic shutdown is not a typical feature associated with not being calibrated for a specific gas. It is designed to continue operating and detecting gases, albeit with uncertain accuracy.
Detection of uncalibrated gases depends on the cross-sensitivity of the sensors to various gases, which might allow for some degree of detection, but one should not rely on such uncalibrated readings for safety-sensitive decisions.
