Shunt Calibration for Dummies; a Reference Guide - Interface Force
Shunt Calibration for Dummies; a Reference Guide - Interface Force
Shunt Calibration for Dummies; a Reference Guide - Interface Force
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V<br />
≈<br />
250<br />
Rs<br />
+ 0.<br />
5<br />
Rb<br />
Nominal<br />
term<br />
⎛ R6<br />
+ R5<br />
⎞⎛<br />
⎜1−<br />
⎟⎜1<br />
+<br />
⎝ 4Rs<br />
⎠⎝<br />
Summation<br />
term<br />
R6<br />
− R5<br />
R6<br />
+ R5<br />
+ Rb<br />
Difference<br />
term<br />
This <strong>for</strong>mula <strong>for</strong> the series resistors case is interesting<br />
because it shows that if R5 = R6, Vs is nearly the same as if<br />
R5 = R6 = 0. This fact allows a batch of transducers with<br />
variations in natural loaded outputs to be trimmed with<br />
series resistors to a standard output and all will have a<br />
similar Vs.<br />
⎞<br />
⎟<br />
⎠<br />
14
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