JPH0348743U

JPH0348743U -

Info

Publication number: JPH0348743U
Application number: JP10947389U
Authority: JP
Priority date: 1989-09-19
Filing date: 1989-09-19
Publication date: 1991-05-10
Anticipated expiration: 2004-09-19
Also published as: JPH0749397Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を説明する断面構成
図、第２図は従来の差圧伝送器の主要部の断面構
成図である。これらの図において、１，３１……センサハウ
ジング、３，３３……第３室、４，３４……差圧
センサ、５，３５……メインダイアフラム、８，
３８……受圧ボデイ、９，３９……センタダイア
フラム、１０，４０……第１室、１１，４１……
第２室、１２，４２……第１のバツクアツプネス
ト、１３，４３……第２のバツクアツプネスト、
１４，４６……第１のシールダイアフラム、１５
，４７……第２のシールダイアフラム、１６，４
４……第１の環状ダイアフラム、１７，４５……
第２の環状ダイアフラム、１８，４８……第１の
連通孔、１９，４９……第２の連通孔、２０，５
０…第３の連通孔、２１，５１……第４の連通孔
、２２，５２……封入液。 FIG. 1 is a cross-sectional configuration diagram illustrating an embodiment of the present invention, and FIG. 2 is a cross-sectional configuration diagram of the main parts of a conventional differential pressure transmitter. In these figures, 1, 31... sensor housing, 3, 33... third chamber, 4, 34... differential pressure sensor, 5, 35... main diaphragm, 8,
38... Pressure receiving body, 9, 39... Center diaphragm, 10, 40... First chamber, 11, 41...
2nd chamber, 12, 42...first backup nest, 13,43...second backup nest,
14, 46...first seal diaphragm, 15
, 47...Second seal diaphragm, 16,4
4...first annular diaphragm, 17,45...
Second annular diaphragm, 18, 48...first communication hole, 19,49...second communication hole, 20,5
0... Third communication hole, 21, 51... Fourth communication hole, 22, 52... Enclosed liquid.

Claims

[Scope of claim for utility model registration] Third chamber 3 provided in sensor housing 31
3, and a differential pressure sensor 34 provided in this third chamber 33
A pressure receiving body 38 connected to the sensor housing 31; A first chamber 40 and a second chamber 41 partitioned by a center diaphragm 39 provided in the pressure receiving body 38; and these first chambers. and first and second annular diaphragms 44 and 45 provided on the respective open surfaces of the second chambers 40 and 41; and the annular diaphragm 44 provided on the respective open surfaces of these first and second chambers 41 and 40. , 45 and receive measurement pressure; and a first communication hole provided to communicate from the first chamber 40 to the differential pressure sensor 34. 48, a second communication hole 49 provided to communicate from the second chamber 41 to the differential pressure sensor 34, and a gap formed between the first annular diaphragm 44 and the pressure receiving body 38, a third communication hole 50 that communicates with the third chamber 33; a fourth communication hole 51 that communicates the third chamber 33 with the gap formed by the second annular diaphragm 45 and the pressure receiving body 38; The first to third chambers 40, 41, 33 and the first to fourth communication holes 48, 49, 50, 51
A differential pressure transmitter comprising: a sealed liquid 52;