GB1018872A - Improvements in or relating to remote reading pressure responsive and like devices - Google Patents

Improvements in or relating to remote reading pressure responsive and like devices

Info

Publication number
GB1018872A
GB1018872A GB3027262A GB3027262A GB1018872A GB 1018872 A GB1018872 A GB 1018872A GB 3027262 A GB3027262 A GB 3027262A GB 3027262 A GB3027262 A GB 3027262A GB 1018872 A GB1018872 A GB 1018872A
Authority
GB
United Kingdom
Prior art keywords
primary
resistance
voltage
temperature
swamping
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
GB3027262A
Inventor
Ernest Mark Hedworth Appleby
Robin Louis Fredericks Freed
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.)
Appleby and Ireland Ltd
Original Assignee
Appleby and Ireland 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 Appleby and Ireland Ltd filed Critical Appleby and Ireland Ltd
Priority to GB3027262A priority Critical patent/GB1018872A/en
Publication of GB1018872A publication Critical patent/GB1018872A/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
    • G01L9/0082—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means
    • G01L9/0085—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means using variations in inductance
    • 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
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/007—Transmitting or indicating the displacement of flexible diaphragms using variations in inductance
    • 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
    • G01L9/10—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 by making use of variations in inductance, i.e. electric circuits therefor
    • G01L9/105—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 by making use of variations in inductance, i.e. electric circuits therefor with temperature compensating means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1,018,872. Measuring pressure electrically. APPLEBY & IRELAND Ltd. Oct. 3, 1963 [Aug. 7, 1962], No. 30272/62. Heading G1N. Relates to the provision of temperature compensation of a remote reading transducer as described in Specification 902,892 comprising a differential transformer having a primary 28 (Fig. 1) and two opposed secondary windings 30, 31 and a movable core 29 movable for example by pressure sensitive means, whereby to overcome errors in detection caused by variation of the resistance of the primary 28 with temperature (primary 28 may be subjected to wide temperature variation e.g. 100‹C. or over) there is provided a resistor 27 connected in series. A voltage source several times greater than the required primary voltage is provided and the series resistance 27 acts as a voltage dropper and as a swamping resistance, swamping the effect of the primary resistance variations on the measurement indicated in milliam-meter 37. The resistance 27 is maintained at ambient room temperature remote from the transducer which may be in a hot gas. As a further aid to accuracy the transformer primary 27 may be supplied with high frequency current (e.g. at 600 cycles/sec.), and an oscillator/amplifier circuit for the purpose is described.
GB3027262A 1962-08-07 1962-08-07 Improvements in or relating to remote reading pressure responsive and like devices Expired GB1018872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3027262A GB1018872A (en) 1962-08-07 1962-08-07 Improvements in or relating to remote reading pressure responsive and like devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3027262A GB1018872A (en) 1962-08-07 1962-08-07 Improvements in or relating to remote reading pressure responsive and like devices

Publications (1)

Publication Number Publication Date
GB1018872A true GB1018872A (en) 1966-02-02

Family

ID=10305016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3027262A Expired GB1018872A (en) 1962-08-07 1962-08-07 Improvements in or relating to remote reading pressure responsive and like devices

Country Status (1)

Country Link
GB (1) GB1018872A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555742A1 (en) * 1983-11-25 1985-05-31 Sereg Soc Effective-pressure inductive sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555742A1 (en) * 1983-11-25 1985-05-31 Sereg Soc Effective-pressure inductive sensor

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