| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas sensor that is manufactured easily in a gas thermal conductivity gas sensor.SOLUTION: In the gas thermal conductivity gas sensor 1 for detecting gas concentration by a change in the value of resistance in a detector element, where the detector element Rs for detecting gas concentration in an atmosphere and a compensation element Rr for performing temperature compensation of the detector element are incorporated into a bridge circuit, the detector element Rs allows a platinum coil to be coated with a high thermal-conductivity material and is composed of a first heating element in which the value of resistance changes according to a heat radiation speed, the compensation element Rr is formed by coating the platinum coil with a low thermal-conductivity material, and is composed of a second heating element formed of a material having thermal conductivity differing from that of the first heating element. They are incorporated into the bridge circuit 10 to compose the gas thermal conductivity gas sensor 1. |
