F.W. Bell 5060, Instruction Manual

Page: 33 / 44

OPERATING INSTRUCTIONS
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will disappear. The “ZERO” legend will continue to flash to remind
the user that the ZERO mode is still active.
If the nulling process is successful, the highest range is selected.
No further electronic adjustments are made, but at this stage a
reading is acquired which will be mathematically subtracted from
all future readings on this range. When finished, the meter will
sound an audible beep and the flashing “AUTO” legend will
disappear. The “ZERO” legend will continue to flash to remind the
user that the ZERO mode is still active. At this point the automatic
process can be repeated or a manual adjustment can be
performed (see “Manual Zero Function”).
The final zero values will remain in effect until the meter and probe
are zeroed again, if the probe is disconnected or if the meter is
turned off and back on again.
MANUAL ZERO FUNCTION
The second zeroing method is a manual adjustment. This feature
also allows the user to set the “zero” point to something other than
zero, if desired. Position the probe for zeroing, then rotate the
function selector to the ZERO position. The “ZERO” legend will
flash and actual dc flux density readings will appear on the
display. The meter will select the lowest range regardless of which
range was in use prior to selecting the ZERO function. Recall that
the maximum flux density level that can be zeroed is 30 mT (300
G).