Force measuring device with zero adjustment
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United States of America Patent
Stats
-
Sep 25, 1990
Grant Date -
N/A
app pub date -
Oct 10, 1989
filing date -
Oct 10, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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