Fluke 87V EX Calibration Manual page 20

87V EX
Calibration Manual
After replacing the fuse, use the following procedure to verify the integrity of the new
fuse and the current circuitry. Refer to Figure 2.
1. Turn the rotary knob to N.
2. To test F2, insert a test lead into the I input terminal and touch the probe to
3. The display should indicate between 00.0 Ω and 00.5 Ω. If the display reads OL,
4. To test F1, move the probe from the A input terminal to the mA/UA input terminal.
5. The display should read between 0.995 kΩ and 1.005 kΩ. If the display reads OL,
To avoid electrical shock or personal injury:
12
the A input terminal.
The input receptacles contain split contacts. Be sure to touch the probe to
the half of the receptacle nearest the LCD.
replace the fuse and test again. If the display reads another value, further servicing is
required.
replace the fuse and test again. If the display reads another value, further servicing is
required.
•
Remove the test leads and any input signals before
replacing the battery or fuses.
•
Install ONLY specified replacement fuses with the
amperage, voltage, and speed ratings shown in Table 9.
Good F2 fuse: 00.0 Ω to
Replace fuse: OL
Touch top half
of input contacts
Good F1 fuse: 0.995 kΩ to
Replace fuse: OL
Figure 2. Testing the Current Input Fuses
Note
XWWarning
00.5 Ω
1.005 kΩ
˚ C/ ˚ F
MIN MAX RANGE AutoHOLD
PEAK MIN MAX
REL Hz %
Hi Res
1 Second
mA
V
A
A
V
OFF
Ex-Area:
Ui = 65 V
ZELM 05 ATEX 0274
Ii = 5 A
Geräterückseite beachten!
Ta = -20 C ... +50 C
Observe reverse side of unit!
A mA A COM V
400mA
CAT
10A MAX FUSED
1000 V
FUSED
CAT 600V
˚ C/ ˚ F
MIN MAX RANGE AutoHOLD
PEAK MIN MAX
REL Hz %
Hi Res
1 Second
mA
V
A
A
V
OFF
Ex-Area:
Ui = 65 V
ZELM 05 ATEX 0274
Ii = 5 A
Geräterückseite beachten!
Ta = -20 C ... +50 C
Observe reverse side of unit!
A mA A COM V
400mA
CAT
10A MAX FUSED
1000 V
FUSED
CAT 600V
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