JPS615442U

JPS615442U - differential pressure transmitter

Info

Publication number: JPS615442U
Application number: JP8823884U
Authority: JP
Inventors: 明石井
Original assignee: 株式会社東芝
Priority date: 1984-06-15
Filing date: 1984-06-15
Publication date: 1986-01-13

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案一実施例の差圧伝送器の中間ダイアフラ
ムの構造を示す断面図、第２図は差圧伝送器の従来例を
示す断面図、第３図は第２図の差圧伝送器の中間ダイア
プラムの構造を示す断面図である。１，２・・・・・・導圧フランジ、３，４・・・・・・
受圧ダイアフラム、５，６．７・・・・・・ケーシング
、９・・・・・・中間ダイアフラム、１０・・而第１の
圧力室、１１・・・・・・第２の圧力室：１２Ａ，
１２Ｂ・・・・・・圧力伝達媒体、１３・・・・・・感
圧素子、２０・・・・・・中間ダイアフラム、２１・・
・・・・周辺部、２２・・・・・・中央部、２３・・・
・・・溶接部。Fig. 1 is a sectional view showing the structure of an intermediate diaphragm of a differential pressure transmitter according to an embodiment of the present invention, Fig. 2 is a sectional view showing a conventional example of a differential pressure transmitter, and Fig. 3 is a sectional view showing the differential pressure of Fig. 2. FIG. 3 is a cross-sectional view showing the structure of the intermediate diaphragm of the transmitter. 1, 2... pressure flange, 3, 4...
Pressure receiving diaphragm, 5, 6.7...Casing, 9...Intermediate diaphragm, 10...First pressure chamber, 11...Second pressure chamber: 12A ，
12B...Pressure transmission medium, 13...Pressure sensing element, 20...Intermediate diaphragm, 21...
...Peripheral part, 22...Central part, 23...
···welded part.

Claims

[Scope of utility model registration request]

(1) A casing, a pair of pressure guiding flanges each having a fluid inlet to be measured which are fixed airtightly so as to sandwich the casing, and a peripheral portion between the pair of pressure guiding flanges and the casing is airtightly attached to the casing. a pair of fixed pressure receiving diaphragms; a pressure transmission medium enclosed in a casing between the pair of pressure receiving diaphragms;
An intermediate diaphragm is installed with its periphery airtightly fixed so as to divide the inside of the anterior chamber casing into two chambers, and the pressure difference between the first and second pressure chambers partitioned by this intermediate diaphragm is detected and an electrical signal is generated. In the differential pressure transmitter, the intermediate diaphragm is made of a peripheral portion made of a material with high mechanical strength and a material having a coefficient of thermal expansion approximately equal to that of the casing. What is claimed is: 1. A differential pressure transmitter having a structure in which the outer peripheral part of the central part and the inner peripheral part of the peripheral part are hermetically joined.

(2) Differential pressure transmission according to claim 1 of the utility model registration claim, characterized in that the longitudinal elastic modulus of the material used in the peripheral portion of the intermediate diaphragm 7 and the material used in the central portion are approximately equal. vessel.