GB1123074A - Improvements in weight measuring and indicating apparatus - Google Patents
Improvements in weight measuring and indicating apparatusInfo
- 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
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.
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) |
-
1964
- 1964-12-12 GB GB5069764A patent/GB1123074A/en not_active Expired
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