JPS5533669A - Reference pressure generator - Google Patents

Reference pressure generator

Info

Publication number
JPS5533669A
JPS5533669A JP10734778A JP10734778A JPS5533669A JP S5533669 A JPS5533669 A JP S5533669A JP 10734778 A JP10734778 A JP 10734778A JP 10734778 A JP10734778 A JP 10734778A JP S5533669 A JPS5533669 A JP S5533669A
Authority
JP
Japan
Prior art keywords
voltage
converter
pneumatic
output
fed
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.)
Pending
Application number
JP10734778A
Other languages
Japanese (ja)
Inventor
Masaru Mitake
Hisao Hori
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.)
Shimadzu Corp
Original Assignee
Shimadzu 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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP10734778A priority Critical patent/JPS5533669A/en
Publication of JPS5533669A publication Critical patent/JPS5533669A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Fluid Pressure (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE: To provide a highly accurate reference pressure ganerator by providing an adjustable voltage setting device for generating a set voltage corresponding to a desired standard voltage, an operational amplifier with an integrator, and electropneumatic converter and a pneumatic-electric converter.
CONSTITUTION: The voltage Ei, which is generated by adjusting a constant DC voltage Es fed from a DC constant voltage power source 1 by means of a variable resistance sensitivity adjustor 2 and by dividing the adjusted voltage by means of an equal space voltage divider 3, is fed to an arithmetic device 7 with an integrator and is converted into a current output 9, which is then fed to an electropneumatic converter 10. The output of this converter 10 becomes the output pneumatic pressure 12 of a standard pressure generator and the input of a pneumatic-electric converter 13. The output voltage Ef of the converter 13 acts as a negative feedback voltage against the input of the amplifier 7 and becomes equal to the voltage Ei under a stable condition. If the electricity within a preset range is set in that way, the pneumatic pressure having a value corresponding thereto is obtained. And, it is possible to generate a standard voltage which is excellent in reproducibility and stability by the action of the pneumatic-electric converter 13 of the negative feedback circuit and the high gain of the amplifier 7.
COPYRIGHT: (C)1980,JPO&Japio
JP10734778A 1978-08-31 1978-08-31 Reference pressure generator Pending JPS5533669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10734778A JPS5533669A (en) 1978-08-31 1978-08-31 Reference pressure generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10734778A JPS5533669A (en) 1978-08-31 1978-08-31 Reference pressure generator

Publications (1)

Publication Number Publication Date
JPS5533669A true JPS5533669A (en) 1980-03-08

Family

ID=14456742

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10734778A Pending JPS5533669A (en) 1978-08-31 1978-08-31 Reference pressure generator

Country Status (1)

Country Link
JP (1) JPS5533669A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5775513U (en) * 1980-10-24 1982-05-10
JPS5847712U (en) * 1981-09-26 1983-03-31 株式会社島津製作所 Electro-pneumatic converter
JPS61170614A (en) * 1985-01-25 1986-08-01 Shoketsu Kinzoku Kogyo Co Ltd Electric signal-air pressure conversion unit
JPS61125715U (en) * 1985-01-25 1986-08-07
JPS6347251U (en) * 1986-09-12 1988-03-30
JPS6371627A (en) * 1986-09-12 1988-04-01 Tokyo Keiki Co Ltd Testing instrument for pressure gauge

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5775513U (en) * 1980-10-24 1982-05-10
JPS5847712U (en) * 1981-09-26 1983-03-31 株式会社島津製作所 Electro-pneumatic converter
JPH04264Y2 (en) * 1981-09-26 1992-01-07
JPS61170614A (en) * 1985-01-25 1986-08-01 Shoketsu Kinzoku Kogyo Co Ltd Electric signal-air pressure conversion unit
JPS61125715U (en) * 1985-01-25 1986-08-07
JPS6347251U (en) * 1986-09-12 1988-03-30
JPS6371627A (en) * 1986-09-12 1988-04-01 Tokyo Keiki Co Ltd Testing instrument for pressure gauge
JPH054624B2 (en) * 1986-09-12 1993-01-20 Tokimec Inc

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