JPS54110862A - Two-wire type signal transducer - Google Patents

Two-wire type signal transducer

Info

Publication number
JPS54110862A
JPS54110862A JP1735778A JP1735778A JPS54110862A JP S54110862 A JPS54110862 A JP S54110862A JP 1735778 A JP1735778 A JP 1735778A JP 1735778 A JP1735778 A JP 1735778A JP S54110862 A JPS54110862 A JP S54110862A
Authority
JP
Japan
Prior art keywords
circuit
accident
event
parts
constituted
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
JP1735778A
Other languages
Japanese (ja)
Other versions
JPS616438B2 (en
Inventor
Shigeru Goto
Shigetoshi Kategari
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
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works Ltd
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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP1735778A priority Critical patent/JPS54110862A/en
Publication of JPS54110862A publication Critical patent/JPS54110862A/en
Publication of JPS616438B2 publication Critical patent/JPS616438B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE: To eliminate restrictions of circuit constitution, by centralizing the parts requiring countermeasures against temperature in the event of accident in an explosion-proof circuit, and connecting them with the other parts by way of protective resistance.
CONSTITUTION: The circuit A side containing a detector 11 to detect the process quantity and generate signal voltage accordingly and a differential amplifier 13 of high gain is constituted with circuits without countermeasures against temperature, whereas the circuit B containing an output transistor 14, constant current circuit FET 15, and emitter follower circuit 16 is constituted with parts of which temperature may not be raised above the permissible value for safety in the event of accident, and the circuits A and B are connected together by way of protective resistances R9 to R11. The output of a transducer 1 is supplied into a safety barrier 5, and load 2 through a transmission line 4. Therefore, the power consumed on the circuit A side in the event of accident may be liminted, so that the countermeasure against temperauter may be centralized in the circuit B side alone.
COPYRIGHT: (C)1979,JPO&Japio
JP1735778A 1978-02-17 1978-02-17 Two-wire type signal transducer Granted JPS54110862A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1735778A JPS54110862A (en) 1978-02-17 1978-02-17 Two-wire type signal transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1735778A JPS54110862A (en) 1978-02-17 1978-02-17 Two-wire type signal transducer

Publications (2)

Publication Number Publication Date
JPS54110862A true JPS54110862A (en) 1979-08-30
JPS616438B2 JPS616438B2 (en) 1986-02-26

Family

ID=11941785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1735778A Granted JPS54110862A (en) 1978-02-17 1978-02-17 Two-wire type signal transducer

Country Status (1)

Country Link
JP (1) JPS54110862A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013211829A (en) * 2012-02-28 2013-10-10 Yokogawa Electric Corp Radio communication system, radio communication method, and radio access point device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013211829A (en) * 2012-02-28 2013-10-10 Yokogawa Electric Corp Radio communication system, radio communication method, and radio access point device
US8976810B2 (en) 2012-02-28 2015-03-10 Yokogawa Electric Corporation Wireless communication system and method, and wireless access point device

Also Published As

Publication number Publication date
JPS616438B2 (en) 1986-02-26

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