Gas sensors

Gas sensors

A gas sensor having a gas diffusion barrier (12), a sensing electrode (16), a sensing circuit giving an output signal in accordance with the amount of gas sensed by the sensing electrode (12) and a thermistor (18) that is connected to the sensing circuit to compensate the output signal for variation...

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Hauptverfasser: PAUL GOTLEY, TREVOR KIM GIBBS, HOWARD ALFRED BUCKENHAM
Format: Patent
Sprache:eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator PAUL GOTLEY
TREVOR KIM GIBBS
HOWARD ALFRED BUCKENHAM
description A gas sensor having a gas diffusion barrier (12), a sensing electrode (16), a sensing circuit giving an output signal in accordance with the amount of gas sensed by the sensing electrode (12) and a thermistor (18) that is connected to the sensing circuit to compensate the output signal for variations in ambient temperature. The thermistor (18) is located in the space between the gas diffusion barrier (12) and the sensing electrode (16) and preferably in contact with the latter. Such an arrangement improves the temperature compensation to the sensor output signal provided by the thermistor. One terminal 23 of the thermistor is arranged outside the sensor so that it can be connected to the sensing circuit manually when the sensor is ready for use and not during storage.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title Gas sensors
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