JPS60181642U

JPS60181642U - differential pressure transmitter

Info

Publication number: JPS60181642U
Application number: JP6853784U
Authority: JP
Inventors: 河内　淳; 健西; 阿波　俊一郎; 伊藤　幸福
Original assignee: 株式会社山武
Priority date: 1984-05-12
Filing date: 1984-05-12
Publication date: 1985-12-02

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図は従来の差圧発信器の一実施例を示す断面図、第
２図は本考案の一実施例を示すネック部分の断面図、第
３図は本考案の他の実施例を示すネック部分の断面図で
ある。１・・・ボディ本体、２，３・・・バリアダイヤフラム
、７・・・センターダイヤフラム、９，１１・・・封入
回路、１２・・・ヘッダ、１２ａ・・・内筒、１２ｂ・
・・外筒、１３・・・センサ、１４・・・半導体圧力セ
ンサ、１６・・・保護体、１９・・・内封液、３０・・
・めねじ、３１・・・支持体、３４・・・おねじ、Ａ−
Ｄ・・・溶接部。１３）１６　１．７）　　）２　２２第３図２０　　　　２０　−Fig. 1 is a sectional view showing an embodiment of a conventional differential pressure transmitter, Fig. 2 is a sectional view of a neck portion showing an embodiment of the present invention, and Fig. 3 is a sectional view showing another embodiment of the present invention. FIG. 3 is a cross-sectional view of the neck portion. DESCRIPTION OF SYMBOLS 1... Body main body, 2, 3... Barrier diaphragm, 7... Center diaphragm, 9, 11... Enclosed circuit, 12... Header, 12a... Inner cylinder, 12b...
... Outer tube, 13... Sensor, 14... Semiconductor pressure sensor, 16... Protector, 19... Inner sealing liquid, 30...
・Female thread, 31...Support, 34...Male thread, A-
D...Welding part. 13) 16 1.7)) 2 22 Figure 3 20 20 -

Claims

[Scope of utility model registration request]

A differential pressure transmitter that applies each measurement pressure to barrier diaphragms placed on both sides of the body, and extracts the movement of the sealed liquid as an electrical output using a semiconductor pressure sensor installed by partitioning the sealed circuit. An inner cylinder is arranged on the outer peripheral surface of the body main body, the semiconductor pressure sensor is arranged on the distal end surface of the protector via a support, and the protector is placed in the inner cylinder together with the semiconductor pressure sensor. The inner cylinder is sealed by disposing and welding them together, and the outer cylinder is welded to an outer cylinder loosely fitted around the outer circumference of the inner cylinder and disposed on the body main body, and the outer cylinder is welded. A differential pressure transmitter characterized by being sealed.