GB1123074A - Improvements in weight measuring and indicating apparatus - Google Patents

Improvements in weight measuring and indicating apparatus

Info

Publication number
GB1123074A
GB1123074A GB5069764A GB5069764A GB1123074A GB 1123074 A GB1123074 A GB 1123074A GB 5069764 A GB5069764 A GB 5069764A GB 5069764 A GB5069764 A GB 5069764A GB 1123074 A GB1123074 A GB 1123074A
Authority
GB
United Kingdom
Prior art keywords
amplifier
potentiometer
voltage
dec
reduced
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
GB5069764A
Inventor
Michael William Inshaw
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.)
Avery Weigh Tronix Ltd
Original Assignee
W&T Avery 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 W&T Avery Ltd filed Critical W&T Avery Ltd
Priority to GB5069764A priority Critical patent/GB1123074A/en
Publication of GB1123074A publication Critical patent/GB1123074A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/142—Circuits specially adapted therefor
    • G01G3/145—Circuits specially adapted therefor involving comparison with a reference value

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

1,123,074. Measuring weight electrically. W. & T. AVERY Ltd. Dec. 13, 1965 [Dec. 12, 1964], No. 50697/64. Heading G1N. A weighing apparatus includes an amplifier 12 (Fig 1), which is coupled to receive an error signal produced by subtracting a reference voltage at a potentiometer 14 and an output voltage from strain gauge load cells 5 from one another, and the coupling incorporates a frequency responsive network (23) Fig. 2 (not shown) which passes preferentially voltage at the frequency of a source 6 which supplies the load cells and potentiometer. Noise passed on to the amplifier e. g. from the cells, is thereby eliminated, which is of importance when the error signal is reduced in amplitude to a level comparable with background noise. The amplifier output is applied to a servomotor 19 to adjust the potentiometer wiper and hence the reference voltage until the error voltage is reduced to zero. An extension of the wiper acts as a pointer which co-operates with a scale to indicate the weight of the load. The network 23 is also designed to compensate for any phase shift between the signal and power inputs to the amplifier.
GB5069764A 1964-12-12 1964-12-12 Improvements in weight measuring and indicating apparatus Expired GB1123074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5069764A GB1123074A (en) 1964-12-12 1964-12-12 Improvements in weight measuring and indicating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5069764A GB1123074A (en) 1964-12-12 1964-12-12 Improvements in weight measuring and indicating apparatus

Publications (1)

Publication Number Publication Date
GB1123074A true GB1123074A (en) 1968-08-14

Family

ID=10456987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5069764A Expired GB1123074A (en) 1964-12-12 1964-12-12 Improvements in weight measuring and indicating apparatus

Country Status (1)

Country Link
GB (1) GB1123074A (en)

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