JPS6086938U

JPS6086938U - pressure transmitter

Info

Publication number: JPS6086938U
Application number: JP17838183U
Authority: JP
Inventors: 林　省一; 片山　芽; 木村　惇
Original assignee: 横河電機株式会社
Priority date: 1983-11-18
Filing date: 1983-11-18
Publication date: 1985-06-14

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 drawings]

第１図は従来の圧力伝送器の構成図、第２図は本考案の
一実施例を示す圧力伝送器の構成図、第３図は第２図の
圧力伝送器を２線式伝送器とした場合の回路構成図、第
４図はその動作説明図、第５図は本考案の主要部の他の
回路構成図、第６図はその動作説明図、第７図、第８図
は本考案の他の実施例を示す圧力伝送器の構成図である
。１・・・本体、２・・・中空室、５，６・・・絶縁材、
７゜８・・・固定電極、１１，２０・・・受圧要素、１
７・・・測温素子、Ｂ・・・誘電率演算手段、Ｃ・・・
温度検出手段、Ｄ・・・出力回路手段、円・・・直流電
源、ＲＬ・・・負荷。Fig. 1 is a block diagram of a conventional pressure transmitter, Fig. 2 is a block diagram of a pressure transmitter showing an embodiment of the present invention, and Fig. 3 shows the pressure transmitter shown in Fig. 2 as a two-wire transmitter. 4 is a diagram explaining its operation, FIG. 5 is another circuit diagram of the main part of the present invention, FIG. 6 is a diagram explaining its operation, and FIGS. 7 and 8 are diagrams explaining its operation. FIG. 3 is a configuration diagram of a pressure transmitter showing another embodiment of the invention. 1... Main body, 2... Hollow chamber, 5, 6... Insulating material,
7゜8...Fixed electrode, 11,20...Pressure receiving element, 1
7... Temperature measuring element, B... Dielectric constant calculation means, C...
Temperature detection means, D...output circuit means, circle...DC power supply, RL...load.

Claims

[Scope of utility model registration request]

A sealed liquid whose dielectric constant changes depending on the pressure to be measured and the ambient temperature, capacitance detection electrodes fixedly arranged opposite to each other within the filled liquid, a detection means for detecting the temperature, and a detection means based on the capacitance. A pressure transmitter comprising calculation means for calculating the dielectric constant, and means for calculating the pressure based on the output of this means and the output of the temperature detection means.