GB1471905A - Weighing apparatus with fault-detection facility - Google Patents
Weighing apparatus with fault-detection facilityInfo
- Publication number
- GB1471905A GB1471905A GB3571474A GB3571474A GB1471905A GB 1471905 A GB1471905 A GB 1471905A GB 3571474 A GB3571474 A GB 3571474A GB 3571474 A GB3571474 A GB 3571474A GB 1471905 A GB1471905 A GB 1471905A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transducer
- output
- weighing apparatus
- value
- weight
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
1471905 Weighing apparatus W & T AVERY Ltd 13 June 1975 [14 Aug 1974] 35714/74 Heading G1N A weighing apparatus comprises a weightresponsive transducer, e.g. a strain gauge bridge having an electrical output signal representitive of the weight applied thereto, electronic instrumentation 12 for receiving the output from the transducer and processing the same to evaluate the weight represented thereby and a recording device for providing an indication of the weight so evaluated. The apparatus further includes means, e.g. a resistor 14, which, in use, simulates a predetermined charge on the electrical output of the transducer, means for storing a value corresponding to the predetermined change, means operable 18 to compare the stored value with the difference between the transducer output and the algebraic sum of the transducer output and the simulated charge, after the same have been processed by the instrumentation 12, and to produce a faultindicating signal if the difference differs from the stored value by more than a pre-selected amount which may be zero. The company means may be connected to a visual or audible-warning device and the fault indicating signal may inhibit or modify operation of the recording device. The simulated charge is either added or subtracted from the transducer output according to whether the transducer output is below or above respectively a predetermined value, i.e. a value representative of 50% of full load, this according to whether switch 15 or 16 is operated, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3571474A GB1471905A (en) | 1975-06-13 | 1975-06-13 | Weighing apparatus with fault-detection facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3571474A GB1471905A (en) | 1975-06-13 | 1975-06-13 | Weighing apparatus with fault-detection facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1471905A true GB1471905A (en) | 1977-04-27 |
Family
ID=10380772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3571474A Expired GB1471905A (en) | 1975-06-13 | 1975-06-13 | Weighing apparatus with fault-detection facility |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1471905A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0009712A1 (en) * | 1978-09-27 | 1980-04-16 | Siemens Aktiengesellschaft | Sensibility correction process for an electrical weighing apparatus and circuitry for putting this process into effect |
| DE2855482A1 (en) * | 1978-12-22 | 1980-06-26 | Schenck Ag Carl | Digitalised evaluation circuit for resistance bridge - integrates signal across diagonal before and after polarity reversal obtained via further parallel resistance (NL 24.6.80) |
| EP0145433A2 (en) * | 1983-12-03 | 1985-06-19 | Kabushiki Kaisha Ishida Koki Seisakusho | Electronic weigher |
| US4722406A (en) * | 1985-06-21 | 1988-02-02 | Ishida Scales Mfg. Co. Ltd. | Electronic weigher with compensated test signal |
| GB2523890A (en) * | 2014-01-17 | 2015-09-09 | Hamilton Sundstrand Corp | Strain gauge pressure sensor circuit with sensor disconnect detection |
-
1975
- 1975-06-13 GB GB3571474A patent/GB1471905A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0009712A1 (en) * | 1978-09-27 | 1980-04-16 | Siemens Aktiengesellschaft | Sensibility correction process for an electrical weighing apparatus and circuitry for putting this process into effect |
| DE2855482A1 (en) * | 1978-12-22 | 1980-06-26 | Schenck Ag Carl | Digitalised evaluation circuit for resistance bridge - integrates signal across diagonal before and after polarity reversal obtained via further parallel resistance (NL 24.6.80) |
| EP0145433A2 (en) * | 1983-12-03 | 1985-06-19 | Kabushiki Kaisha Ishida Koki Seisakusho | Electronic weigher |
| EP0145433A3 (en) * | 1983-12-03 | 1986-04-16 | Kabushiki Kaisha Ishida Koki Seisakusho | Electronic weigher |
| US4722406A (en) * | 1985-06-21 | 1988-02-02 | Ishida Scales Mfg. Co. Ltd. | Electronic weigher with compensated test signal |
| GB2523890A (en) * | 2014-01-17 | 2015-09-09 | Hamilton Sundstrand Corp | Strain gauge pressure sensor circuit with sensor disconnect detection |
| GB2523890B (en) * | 2014-01-17 | 2018-06-06 | Hamilton Sundstrand Corp | Strain gauge pressure sensor circuit with sensor disconnect detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PCNP | Patent ceased through non-payment of renewal fee |