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71X Series
Calibration Manual
718Ex Approved Batteries
For a list of 718Ex approved batteries, refer to Table 31.
Alkaline, 9 volt
Alkaline Ultra, 9 volt
Alkaline Energizer, 9 volt
Alkaline Power Line Industrial Battery, 9 volt
Replacing the Fuse
To avoid personal injury or damage to the calibrator, use only a
0.125A 250V fast fuse, Littelfuse
To check if the fuse(s) are blown, refer to Table 32.
Calibrator Model
712 V1.1
712 V1.2
712 ≥V2.0
717 Series <V1.9
718 Series <V1.9
717 Series ≥V2.0
718 Series ≥V2.0
719 Series
714 <V1.9
714 ≥V2.0
715
715 ≥V2.0
718Ex
22
Table 31. 718Ex Approved Batteries
Battery
XW Warning
Table 32. Verifying a Blown Fuse
Put the calibrator in simulate mode (OUTPUT on the display), and check for proper
resistance at the calibrator's OUTPUT terminals. An open or very high impedance
suggests fuse F1 is blown.
Fuse F1 is probably blown if no current comes from the center jacks when in input
2W mode. Fuse F2 is probably blown when output mode will not work.
Fuseless overvoltage protection.
Fuse F1 is probably blown if the mA measurement display reading does not
respond to current applied to the current (mA) inputs.
Fuseless overvoltage protection.
Fuse F1 is probably blown if, in the input mode, the calibrator always reads OL,
even with a thermocouple connected.
Fuseless overvoltage protection.
Fuse F1 is probably blown if:
•
in the mA input mode, the calibrator always reads 0.000, even with a signal
applied.
•
in the mA output mode, with a short across the mA OUTPUT jacks, OL is
flashing on the display.
Fuse F2 is probably blown if:
•
in the V output mode, with the test leads removed from the calibrator, the
display flashes OL.
•
in the V input mode, the calibrator always displays OL, even with a signal
applied that is within the measurement range.
Fuseless overvoltage protection.
No user serviceable fuse. An open fuse voids safety certification. The unit should
be returned to Fluke for repair.
Manufacturer
Duracell
6LR61/MN1604
Duracell
6LR61/MX1604
Eveready
6LR61/522
Panasonic
6LR61.9V
®
2AG.
Determining a Blown Fuse
Type
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