About this task
To verify that the transducer is working properly, complete the following steps.
Procedure
- With the transducer in place and the controlled system pressure stabilized, measure the pressure at the transducer with an accurate and reliable gauge. This is the measured pressure (P).
- Determine the maximum (Pmax) and minimum (Pmin) pressure values for the transducer’s pressure range. (See Table 4.)
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Use the equation in Figure 1 to determine the calculated output voltage for the 0 VDC to
10 VDC transducers.
Figure 1. Voltage calculation for 0 VDC to 10 VDC transducers
- Measure the voltage between the transducer Output (white) wire and Common (black) wire with a multimeter set to measure DC voltage. (See Figure 1.) This is the measured output voltage.
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Compare the calculated output voltage (Step 3) and the measured output voltage
(Step 4). If the measured output voltage differs greatly from the calculated
output voltage, replace the transducer.
Note: It is normal for the transducer reading to differ somewhat from pressure gauge readings due to voltmeter and gauge tolerances, and other factors.