Assertion: detector | /r/CapableOf | come in contact
Facets:
value: with the gas
type: OTHER
value: to detect it
type: PURPOSE
Source sentences:
text: Tin dioxide is the most common material used in semiconductor sensors, and the electrical resistance in the sensor is decreased when it comes in contact with the monitored gas.
text: Because the sensor must come in contact with the gas to detect it, semiconductor sensors work over a smaller distance than infrared point or ultrasonic detectors.