GB2020825A - Improvements in or Relating to Weighing Balances - Google Patents
Improvements in or Relating to Weighing BalancesInfo
- 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- Withdrawn
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>
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)
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 |
-
1979
- 1979-05-31 GB GB7918941A patent/GB2020825A/en not_active Withdrawn
Cited By (4)
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) |