| 摘要 |
A sensor is provided which is able to determine the level of contaminant gas within a gas stream. In particular, the sensor is able to detect the level of hydrogen gas contamination within an oxygen containing gas stream, or the oxygen gas contamination within a hydrogen containing gas stream. The sensor has a first temperature measurement device which measures a first temperature within a catalyst bed which catalyst bed catalytically effects the reaction of hydrogen and oxygen to produce heat. The first temperature is compared to the temperature of the original gas stream measured using a second temperature measurement device. The difference in the first and second temperatures provides a heat signature which can be related to the contaminant gas concentration. A simple, cost effective and reliable contaminant gas sensor is provided.
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