Shunt Calibration for Dummies; a Reference Guide - Interface Force

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V ≈ 250 Rs + 0. 5 Rb Nominal term ⎛ R6 + R5 ⎞⎛ ⎜1− ⎟⎜1 + ⎝ 4Rs ⎠⎝ Summation term R6 − R5 R6 + R5 + Rb Difference term This <strong>for</strong>mula <strong>for</strong> the series resistors case is interesting because it shows that if R5 = R6, Vs is nearly the same as if R5 = R6 = 0. This fact allows a batch of transducers with variations in natural loaded outputs to be trimmed with series resistors to a standard output and all will have a similar Vs. ⎞ ⎟ ⎠ 14
Series resistor circuit examples Rb (ohm) Rs (ohm) R5 (ohm) R6 (ohm) Vs (mV/V) 350 60,000 350 60,000 0 50 0 1.45409 50 1.45349 350 60,000 0 50 1.63551 350 60,000 50 0 1.27207 350 60,000 175 175 1.45198 700 60,000 0 100 3.26086 700 60,000 100 200 3.18574 15
Page 1 and 2: Shunt Calibration for Dummies; a Re
Page 3 and 4: 1. What is Shunt Cal ? • Shunt Ca
Page 5 and 6: 3. Shunt Cal has some advantages
Page 7 and 8: 4. About Formulae (continued) • I
Page 9 and 10: Simplified Basic Bridge Circuit, R1
Page 11 and 12: Basic Bridge Formula Inverted to so
Page 13: Vs 6. Bridge With Series Trim or Co
Page 17 and 18: Parallel resistor circuit examples
Page 19 and 20: 9. What Errors are Contributed by E
Page 21 and 22: Conductor Gauge 4-Conductor Error E
Page 23 and 24: 10. What Error is Contributed by a
Page 25 and 26: 12. Why are 8-Conductor Cables Some
Page 27 and 28: Rb (ohm) Error due to Physical Load
Page 29 and 30: 15. What is the Effect on Shunt Cal
Page 31 and 32: 17. Can a Value for Vs be Calculate
Page 33 and 34: . Internal to an Instrument. • Lo
Page 35 and 36: 500 DMA DCA These lower cost signal
Page 37 and 38: d. External, laboratory instrument.
Page 39: Shunt Calibration Repeatability Dat

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