Patent ID: 9140620
Filing Date: 2015-09-22
Classification: G01L

Abstract:
1. A pressure/differential pressure transmitter comprising: a diaphragm; a pressure receiving chamber wall face; a space formed between the diaphragm and the pressure receiving chamber wall face; pressure guide paths connected to the pressure receiving chamber wall face; a sealed liquid sealed in the space and the pressure guide paths to transmit a pressure received by the diaphragm to a sensor; and a hydrogen absorption material provided at least in the sealed liquid, on the pressure receiving chamber wall face, or in a part of a path between the pressure receiving chamber wall face and the sensor, to absorb hydrogen atoms in the sealed liquid; wherein alkyl groups and/or hydrocarbon compounds are formed in the sealed liquid as a result of radiation, the alkyl groups and/or hydrocarbon compounds are dissociated to hydrogen, the hydrogen is absorbed by the hydrogen absorption material, and a carbon of the alkyl groups and/or the hydrocarbon compounds is absorbed to the surface of the hydrogen absorption material.