Only pyroelectric transducer or pyroelectric crystals are used as detectors in Fourier Transform Infrared Spectrophotometer (FTIR). What is the main reason for other types of thermal detectors are not being used in FTIR spectrophotometer?(a) Less accuracy(b) Slower response(c) Less precision(d) Less sensitivityThis question was addressed to me in an online interview.This intriguing question originated from Fourier Transform Infra-red Spectrometers in chapter Colorimetry and Spectrometry of Analytical Instrumentation

Only pyroelectric transducer or pyroelectric crystals are used as dete

1.	Only pyroelectric transducer or pyroelectric crystals are used as detectors in Fourier Transform Infrared Spectrophotometer (FTIR). What is the main reason for other types of thermal detectors are not being used in FTIR spectrophotometer?(a) Less accuracy(b) Slower response(c) Less precision(d) Less sensitivityThis question was addressed to me in an online interview.This intriguing question originated from Fourier Transform Infra-red Spectrometers in chapter Colorimetry and Spectrometry of Analytical Instrumentation
Answer» RIGHT answer is (B) Slower response The best I can explain: Other THERMAL detectors are not employed DUE to slower response of the detectors. Pyroelectric transducers or pyroelectric crystals are chosen for their high speed, accuracy, precision, sensitivity and resolution.

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