Differential pressure detecting apparatus

摘要

A differential pressure detecting apparatus includes a columnar main body wherein a differential pressure detection portion is inserted into a closed-end hole having a countersunk portion and formed in the outer circumferential surface of said main body at right angles to the axis of the main body, wherein a first seal diaphragm for receiving one of introduced pressures relating to a differential pressure to be measured is provided in one end surface of the main body, and wherein the main body has a hole provided for transmitting the received introduced pressure to the differential pressure detection portion; a disc-like sub-body inserted into the countersunk portion of the closed-end hole, wherein a second seal diaphragm for receiving the other introduced pressure is provided in the outer end surface of the sub-body, and wherein a hole is provided for transmitting the received introduced pressure to the differential pressure detection portion; a cover provided on the one end surface of the main body, and having a hole for the one introduced pressure for the first seal diaphragm; and another cover provided on the outer circumferential surface of the main body, and having a hole for the other introduced pressure for the second seal diaphragm.