| 摘要 |
PROBLEM TO BE SOLVED: To provide a differential pressure transmitter which allows measurement with a stable output against ambient temperature changes, has a simple structure, and is inexpensive. SOLUTION: The differential pressure transmitter transmits pressure from a process to an enclosed liquid through a seal diaphragm, transmits the pressure of the enclosed liquid to a capsule through a capillary, converts the pressure into an electrical signal by a sensor within the capsule, and transmits it. The differential pressure transmitter includes a liquid contact block comprising one surface to which the seal diaphragm is connected, the other surface to which a protection diaphragm operating at a predetermined pressure is connected, and a small hole which passes through the one surface and the other surface and is filled with the enclosed liquid. COPYRIGHT: (C)2007,JPO&INPIT
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