GB1453078A - Transducer device with temperature compensation mechanical actuator having presettable positions - Google Patents

Transducer device with temperature compensation mechanical actuator having presettable positions

Info

Publication number
GB1453078A
GB1453078A GB4947973A GB4947973A GB1453078A GB 1453078 A GB1453078 A GB 1453078A GB 4947973 A GB4947973 A GB 4947973A GB 4947973 A GB4947973 A GB 4947973A GB 1453078 A GB1453078 A GB 1453078A
Authority
GB
United Kingdom
Prior art keywords
transducer
diodes
change
output voltage
voltage
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.)
Expired
Application number
GB4947973A
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.)
Bell and Howell Co
Original Assignee
Bell and Howell Co
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
Priority claimed from US00301605A external-priority patent/US3808469A/en
Priority claimed from US00301606A external-priority patent/US3831042A/en
Application filed by Bell and Howell Co filed Critical Bell and Howell Co
Publication of GB1453078A publication Critical patent/GB1453078A/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
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2268—Arrangements for correcting or for compensating unwanted effects
    • G01L1/2281—Arrangements for correcting or for compensating unwanted effects for temperature variations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/20—Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B7/00—Compensating for the effects of temperature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Force In General (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1453078 Temperature compensating transducer circuits BELL & HOWELL CO 24 Oct 1973 [27 Oct 1972 (2)] 49479/73 Heading G1N A transducer device comprises a transducer 10, e.g. a four element semi-conductor strain gauge bridge, having input terminals 11, 12 and an overall negative temperature coefficient of voltage that causes an error in the output voltage at temperatures other than that at which the transducer is calibrated, and a compensation circuit 13 of one or more temperature responsive diodes connected in series with the input terminals of the transducer to compensate for said error. In a preferred embodiment Fig. 1, of which the block diagram of an equivalent circuit is in Fig. 3 (not shown) the source voltage and the number of diodes are chosen so that the percentage change in output voltage caused by the diodes is the same as the percentage change in output voltage due to the change in sensitivity of the transducer with a change in temperature. Alternatively Fig. 4 (not shown) a sufficient number of diodes (40) is employed to provide an overall positive temperature coefficient for the combination of the diodes and transducer and a positive temperature coefficient resistor (46) is connected in series between the transducer (41) and voltage source (42).
GB4947973A 1972-10-27 1973-10-24 Transducer device with temperature compensation mechanical actuator having presettable positions Expired GB1453078A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00301605A US3808469A (en) 1972-10-27 1972-10-27 Temperature compensation circuit for sensor of physical variables such as temperature and pressure
US00301606A US3831042A (en) 1972-10-27 1972-10-27 Temperature compensation circuit for sensor of physical variables such as temperature and pressure

Publications (1)

Publication Number Publication Date
GB1453078A true GB1453078A (en) 1976-10-20

Family

ID=26972492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4947973A Expired GB1453078A (en) 1972-10-27 1973-10-24 Transducer device with temperature compensation mechanical actuator having presettable positions

Country Status (3)

Country Link
JP (1) JPS4996782A (en)
DE (1) DE2353390A1 (en)
GB (1) GB1453078A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248342A (en) * 1975-10-15 1977-04-18 Torao Suzuki Remote voltage control system including temperature compensating circu it
JPS5498282U (en) * 1977-12-23 1979-07-11
DE4211997A1 (en) * 1992-04-09 1993-10-14 Jaeger Erich Gmbh & Co Kg Method and circuit arrangement for electrical compensation of the influence of temperature on the measurement signal from mechanoelectric transducers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS454532Y1 (en) * 1967-08-26 1970-03-02

Also Published As

Publication number Publication date
JPS4996782A (en) 1974-09-12
DE2353390A1 (en) 1974-05-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee