Checking The Diode Test Function - Fluke ProcessMeter 789 Calibration Manual

789 Range
No Range Switching
No Range Switching
No Range Switching
789 Range
No Range Switching
No Range Switching
789 Range
No Range Switching
No Range Switching

Checking the Diode Test Function

1. Put the calibrator in Standby (
2. Turn the UUT rotary switch in the
3. Press J (BLUE) to select diode test (
4. Connect the calibrator to the
5.
5. Apply 2.0 V dc from the calibrator.
6. The UUT should read between 1.959 V and 2.041 V.
7. Put the calibrator in Standby (
UUT.
8. Put the multimeter in the dc mA (autorange) function.
9. Connect the current terminals of the multimeter to the
UUT.
10. The multimeter should read close to 0.2 mA. (There is no tolerance specification for
this current. This test just makes sure that the diode test current source is operating.)
Table 5. DC mA Test
Calibrator
DC Current
4.000 mA
12.000 mA
20.000 mA
Table 6. DC Amp Test
Calibrator
DC Current
0.100 A
0.400 A
Table 7. AC Amp Test
Calibrator AC Current
and Frequency
0.100 A @ 60 Hz
0.400 A @ 60 Hz
STBY ) mode.
V
and
COM
) mode; then disconnect the calibrator from the
STBY
Minimum Acceptable
Reading
3.996 mA
11.992 mA
19.988 mA
Minimum Acceptable
Reading
0.098 A
0.397 A
Minimum Acceptable
Reading
0.097 A
0.394 A
position.
G)
.
d
terminals on the UUT as shown in Figure
COM and
789 ProcessMeter
Calibration Verification
Maximum Acceptable
Reading
4.004 mA
12.008 mA
20.012 mA
Maximum Acceptable
Reading
0.102 A
0.403 A
Maximum Acceptable
Reading
0.103 A
0.406 A
d
terminals on the
15