Martel Electronics DPC300A - Manual (Page 23)

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4.6.2 Calibrating a pressure-to-current transmitter
To calibrate a pressure-to-current transmitter (P/I), perform the
following:
1. Connect the calibrator and the pump to the transmitter.
2. Apply pressure with the pump.
3. Measure the current output of the transmitter.
4. Ensure that the read value is correct. If it isn't, the transmitter must
be adjusted.
REGULATOR
MAX 120 PSI
AIR SUPPLY
0-100 PSI
OUTPUT
-12-300 PSI
PUMP
-12-300 PSI
MEASURE
FINE ADJUST / VENT
PUMP
SELECTOR
MAIN
SELECTOR WARNING:
VENT BEFORE SELECTION
HOME
PUMP
ZERO
J1 J2 J3
COM
VOLTS /mA
SWITCH TEST +24v DC
PRESSURE
MODULE
F1 F2 F3
FILTER
CHARGE
PRESSURE VACUUM
P2
P3
P4
Use low volume
hose if possible
MARTEL ELECTRONICS
DPC-300A
P1 P2 P3 P4
Figure 5
4.6.3 Calibrating a pressure-to-voltage transmitter
To calibrate a pressure-to-voltage transmitter (P/V), perform the
following:
1. Connect the calibrator and the pump to the transmitter.
2. Apply pressure with the pump.
3. Connect the 24V to the transmitter.
3. Measure the voltage output of the transmitter.
4. Ensure that the read value is correct. If it isn't, the transmitter must
be adjusted.
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