Force measuring device with zero adjustment
US4958526A · kind A · utility
15Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/2268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A strain gage load cell is adjusted to zero output signal at no load or a fixed tare load on the load cell independent of the load cell temperature by shunting a pair of opposing arms of the strain gage bridge by equal resistors, and connecting a pair of equal resistors between opposite terminals of the power supply for the strain gage bridge and opposite corners of the output terminals of the strain gage bridge. The zero adjustment according to the invention is especially useful with load cell arrangements where individual strain gage elements must have equalized sensitivities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.