Anderson LA Series Buku Petunjuk - Halaman 10

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Halaman Cetak
P
10
AGE

FIGURE 2-7 PRESSURE CAL VERIFICATION HOOKUP

FIGURE 2-7 PRESSURE CAL VERIFICATION HOOKUP
FIGURE 2-7 PRESSURE CAL VERIFICATION HOOKUP
FIGURE 2-7 PRESSURE CAL VERIFICATION HOOKUP
FIGURE 2-7 PRESSURE CAL VERIFICATION HOOKUP
HOOK METER TO
TESTPOINTS
FOR CALIBRATION
RED METER LEAD
(TEST+)
1.
Remove sensor from vessel if already installed – leave loop wiring attached
2.
Provide loop power to sensor if performing a bench test
3.
Attach snap fit calibration adapter to sensor fitting (Available from Anderson)
4.
Sensor MUST remain stationary, with no movement
5.
Perform ZERO calibration as described in this manual
6.
Set pressure calibrator to proper range
7.
Set multimeter to 4-20 mA DC scale, make connections at "TEST +" and "TEST -"
testpoints
8.
Using pressure pump, increase pressure until 20.00 mA is seen on the multimeter
9.
Read "Water Column" from Pressure Calibrator – this is current sensor calibration
10. If value determined matches value etched on side of sensor, calibration ok
11. If value does not match value in model number, sensor calibration has been altered since
unit left the factory – see sections that follow for proper re-calibration procedures
METER MODE
SET TO DC MILLIAMP
DC mA
BLACK METER LEAD
(TEST-)
TEST-
TEST+
LOOP+
LOOP-
Note: Proper loop wiring must be established,
not shown for clarity
Set to RUN MODE