5
5. HALO I will continue to lock on the maximum current reading during the time it is
hanging on the conductor. HALO II can be switched between modes by pressing the
“TRACK/HOLD” switch. When the sine wave symbol appears in the display, the ammeter is
in the TRACK mode. When the sine wave does not appear, the ammeter is in HOLD mode.
WARNING
- Before switching modes, always remove HALO from the voltage source.
NOTE
- If HALO II is reset in either mode it will automatically revert to the other mode.
6. On completion of a monitoring period, the instrument should be removed from the
voltage source, carefully lowered, and the reading on the display noted.
7. If another test is required, press the “ON/RESET” switch for HALO I to zero the display
and test again and “TRACK/HOLD” switch for HALO II. Prior to retesting, make certain
HALO II is in correct mode. Press and hold the “OFF” switch if testing is complete until
the display is blank.
HALO - BATTERY REPLACEMENT
NOTE
- Figure 7 shows a cross sectional view of the battery holder.
1. Place the HALO horizontally.
2. The Battery Holder is attached to the body by two brass
screws (4 screws on some versions). Remove the screws.
3. When the brass screws have been removed, carefully slide the
Battery Holder out beyond the end of the body.
CAUTION:
The battery clip is attached to the circuit board and to
the battery that is located inside the Battery Holder. IF THE BAT-
TERY CLIP IS PULLED TOO FAR, THEN IT CAN BE DISCONNECTED
FROM THE CIRCUIT BOARD AND THE HALO WILL NOT OPERATE.
4. Remove the old battery and disconnect from the battery clip.
5. Insert a new 9 volt lithium or alkaline battery in the battery
clip and install back in the Battery Holder.
6. Slide the Battery Holder back into the HALO body and replace
the brass screws that were removed in Step 2.
NOTE
- To maintain maximum accuracy, the head must be perpendicular as seen in
Figures 3 thru 6. Failure to do so may result in incorrect readings on the display.
Figure 3 Figure 4 Figure 5 Figure 6
CORRECT
INCORRECT
Air Gap
Figure 7
9 Volt
Battery
