Page 112 - Mechanical Engineers' Handbook (Volume 2)

6 Resistance Bridge Transducer Measurement System Calibration 101

Figure 25 Oscillograph frequency response display.

model plus shunt resistor adapter) is a stable, complete model of the transducer, it can be
used to perform an absolute end-to-end system calibration and can be a valuable tool in
troubleshooting.
Several disadvantages are encountered when using the shunt resistor bridge as a cali-
bration tool. Since some transducers are hard to model, it is difficult to ensure that the bridge
is a representative model of the transducer under all conditions. Furthermore, a different
bridge model is required for each major transducer design.

Figure 26 Shunt resistor bridge.