JPS56100332A - Pressure converter - Google Patents

Pressure converter

Info

Publication number
JPS56100332A
JPS56100332A JP242980A JP242980A JPS56100332A JP S56100332 A JPS56100332 A JP S56100332A JP 242980 A JP242980 A JP 242980A JP 242980 A JP242980 A JP 242980A JP S56100332 A JPS56100332 A JP S56100332A
Authority
JP
Japan
Prior art keywords
oscillator
fed
input
mode input
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP242980A
Other languages
Japanese (ja)
Other versions
JPS5938531B2 (en
Inventor
Tadashi Azegami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP242980A priority Critical patent/JPS5938531B2/en
Publication of JPS56100332A publication Critical patent/JPS56100332A/en
Publication of JPS5938531B2 publication Critical patent/JPS5938531B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
    • G01L9/0022—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a piezoelectric element

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE:To avoid to be effected from other than gas or liquid pressure around an oscillator, by using a differential type oxcillation sensor consisting of a pair of oscillators receiving a pressure differentially. CONSTITUTION:A sensor S is provided with a pair of elastic body beams 2, 3 as oscillators incorporated with one beam for one end and fixed with a main body for another end, sticked with crystal piezoelectric substances 4, 5 having arranged characteristics, and when a pressure P as a process input is fed to the top junction, it is fed as a cross-mode input as expansion to one oscillator and compression to another. Two frequency signals f1, f2 from each oscillator are fed to a beat conversion BT and the signal difference f3 are input to the duty cycle modulation section DY and modulated, allowing to a signal only related to the cross mode input without being subject to the common mode input.
JP242980A 1980-01-11 1980-01-11 pressure transducer Expired JPS5938531B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP242980A JPS5938531B2 (en) 1980-01-11 1980-01-11 pressure transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP242980A JPS5938531B2 (en) 1980-01-11 1980-01-11 pressure transducer

Publications (2)

Publication Number Publication Date
JPS56100332A true JPS56100332A (en) 1981-08-12
JPS5938531B2 JPS5938531B2 (en) 1984-09-18

Family

ID=11529009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP242980A Expired JPS5938531B2 (en) 1980-01-11 1980-01-11 pressure transducer

Country Status (1)

Country Link
JP (1) JPS5938531B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012510630A (en) * 2008-12-03 2012-05-10 ローズマウント インコーポレイテッド Pressure measuring method and apparatus using crystal resonator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012510630A (en) * 2008-12-03 2012-05-10 ローズマウント インコーポレイテッド Pressure measuring method and apparatus using crystal resonator

Also Published As

Publication number Publication date
JPS5938531B2 (en) 1984-09-18

Similar Documents

Publication Publication Date Title
WO2001077741A8 (en) Optical modulator with pre-determined frequency chirp
JPS54127209A (en) Structure system of radio equipment
EP0718989A3 (en) A low-bias heterodyne fiber-optic communication link
AU1604783A (en) Improved fiber optic sensor for detecting very small displacements of a surface
JPS56100332A (en) Pressure converter
JPS56143703A (en) Frequency converting circuit
EP0337796A3 (en) Device for measuring optical frequency modulation characteristics
JPS5621402A (en) Oscillator
JPS57157605A (en) Calibration method of orthogonal synchronous wave detector
JPS5733819A (en) Surface elastic wave device
JPS5580934A (en) Optical transmitter
SU777872A1 (en) Device for transmitting frequency-modulated signals
JPS53111265A (en) Oscillator
JPS6484948A (en) Demodulation system for frequency modulation signal
JPS5792902A (en) Fm modulator
JPS5789365A (en) Ternary logical device and ternary communication system using it
JPS5499509A (en) Transmission system for hand-written telautogram
JPS57178481A (en) Rf converter
JPS551746A (en) Converter for ultrasonic wave
JPS57129553A (en) Am stereo receiver
JPS551522A (en) Stress sensor
JPS5486220A (en) Signal composite superdiversity repeating system through phase control
JPS57115520A (en) Driving circuit for ultrasonic wave optical modulator
JPS5575332A (en) Piezoelectric filter
JPS5287933A (en) Recording method of video signal