Discussion
A sensor that responds to a gas other than the one it is intended to measure is said to show cross _____.
Answer: A
Cross sensitivity is quoted as a percentage response to a named interferent and appears in the data sheet for every electrochemical and many optical sensors. It is the reason a sensor must be chosen for the atmosphere it will meet rather than for the gas alone. Cross calibration and cross modulation are not standard terms here, and gas correlation refers to the gas filled detector technique that gives an infrared analyser its selectivity, which is a quite different idea.
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