Current Sourcing - Fluke ProcessMeter 789 Calibration Manual

Current Sourcing

1. Put the calibrator in Standby (
2. Connect the
terminals on the multimeter as shown in Figure 3.
3. Put the multimeter in the dc mA mode and manually select the 100 mA range. (Do
not allow the multimeter to autorange.)
4. Turn the UUT rotary switch in the
5. Use the
% STEP
Table 4 and compare the readings on the multimeter to the acceptable readings
shown.
787 Range
No Range Switching
No Range Switching
No Range Switching
UUT
789 PROCESSMETER
100% MIN MAX RANGE HOLD
COARSE
SpanCheck %STEP FINE
0% REL Hz
mV
mA
V
A
V
mA
OFF mA
250
mA
HART
LOOP POWER
mA COM V
A
Figure 3. Current Sourcing Connections Using the HP 3458A
STBY
+ ( ) and − (
SOURCE AD
OUTPUT
and keys on the UUT to apply the values shown in
COARSE
Table 4. Current Sourcing Test
787 Output Current
4.000 mA
12.000 mA
20.000 mA
HP 3458A
DC mA Function
100 mA Range
) mode.
) terminals on the UUT to the current
mAF
X
position.
Minimum Acceptable
Multimeter Reading
3.990 mA
11.990 mA
19.990 mA
789 ProcessMeter
Calibration Verification
Maximum Acceptable
Multimeter Reading
4.010 mA
12.010 mA
20.010 mA
adm001F.EPS
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