Taking Measurements - PCB Piezotronics IMI SENSORS 653A01 Installation And Operating Manual

The resistor in a loop will generate a DC voltage that is proportional to current by:
If R = 250 ohms and I = 6mA, then V = 1.5 Vdc
Note:
Resistor value must be less than: (Vsupply – 12) x 50.
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For integral cable sensors: RED wire is positive, BLUE wire is negative.
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Taking Measurements

When measuring the current output from the unit, use the following formula to calculate the vibration level:
Vibration Output mils, pk-pk = (Measured Output mA – 4mA) x (Full Scale Vibration Output mils, pk-pk /16mA)
Measured mA
4.00
8.00
12.0
16.0
20
V = IR
Vibration Output
0.0 mils, pk-pk
10.0 mils, pk-pk
20.0 mils, pk-pk
30.0 mils, pk-pk
40.0 mils, pk-pk
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