pickup; sensing element; transducer
Technical term in engineering and instrumentation for a device that converts one form of energy into another, especially for measurement or signal detection.
This sensor uses a piezoelectric transducer.
It is necessary to adjust the sensitivity of the sensing element.
Compound of 変換 (へんかん, 'conversion') + 子 (し, 'element' or 'device'), literally 'conversion element'. The term is a modern technical coinage.