GB2020825A - Improvements in or Relating to Weighing Balances - Google Patents

Improvements in or Relating to Weighing Balances

Info

Publication number
GB2020825A
GB2020825A GB7918941A GB7918941A GB2020825A GB 2020825 A GB2020825 A GB 2020825A GB 7918941 A GB7918941 A GB 7918941A GB 7918941 A GB7918941 A GB 7918941A GB 2020825 A GB2020825 A GB 2020825A
Authority
GB
United Kingdom
Prior art keywords
utilised
weight
compared
signal
weighing
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.)
Withdrawn
Application number
GB7918941A
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.)
OERTLING Ltd
Original Assignee
OERTLING 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 OERTLING Ltd filed Critical OERTLING Ltd
Priority to GB7918941A priority Critical patent/GB2020825A/en
Publication of GB2020825A publication Critical patent/GB2020825A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
    • G01G23/36—Indicating the weight by electrical means, e.g. using photoelectric cells
    • G01G23/37—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Networks Using Active Elements (AREA)

Abstract

In an electromechanical weighing balance an electrical signal produced in response to the weight of a weighed object is compared with a reference signal and a ratio of their values is obtained. A reference weight is weighed to give a signal with which the reference signal is compared and the weighing circuitry modified by a feedback voltage so that the measured value of the reference weight equals a stored value. In one embodiment a dual ramp integrator is used. The feedback voltage may be used to change the period during which the unknown voltage is integrated using a correction counter 17 or alternatively a frequency changer alters the frequency of the clock pulses utilised in the circuit. Other modifications of the circuitry are also utilised in other described embodiments. <IMAGE>
GB7918941A 1978-04-05 1979-05-31 Improvements in or Relating to Weighing Balances Withdrawn GB2020825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7918941A GB2020825A (en) 1978-04-05 1979-05-31 Improvements in or Relating to Weighing Balances

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1337278 1978-04-05
GB7918941A GB2020825A (en) 1978-04-05 1979-05-31 Improvements in or Relating to Weighing Balances

Publications (1)

Publication Number Publication Date
GB2020825A true GB2020825A (en) 1979-11-21

Family

ID=26249744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7918941A Withdrawn GB2020825A (en) 1978-04-05 1979-05-31 Improvements in or Relating to Weighing Balances

Country Status (1)

Country Link
GB (1) GB2020825A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124356A2 (en) * 1983-04-28 1984-11-07 Kabushiki Kaisha Ishida Koki Seisakusho Span adjusting method and apparatus
EP0131461A2 (en) * 1983-07-07 1985-01-16 Kabushiki Kaisha Ishida Koki Seisakusho Span adjustment in electronic weighing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124356A2 (en) * 1983-04-28 1984-11-07 Kabushiki Kaisha Ishida Koki Seisakusho Span adjusting method and apparatus
EP0124356A3 (en) * 1983-04-28 1985-12-18 Kabushiki Kaisha Ishida Koki Seisakusho Span adjusting method and apparatus
EP0131461A2 (en) * 1983-07-07 1985-01-16 Kabushiki Kaisha Ishida Koki Seisakusho Span adjustment in electronic weighing apparatus
EP0131461A3 (en) * 1983-07-07 1986-02-26 Kabushiki Kaisha Ishida Koki Seisakusho Span adjustment in electronic weighing apparatus

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)