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10. After a fault is located and pinpointed, move the Earth Contact Frame about one
Earth Contact Frame width away from the fault and insert it in the ground with the
green-banded leg towards the fault. Compare the numeric signal level with the fault
level reference signal indicated in the lower left box labeled
Ref
. If the reading is
within 12 dB of the reference signal, the operator has found the major fault. If the
fault reading does not fall within 12 db of the reference signal reading, multiple
faults may exist. The signal level of this secondary fault can be saved by pressing
Fault 1
[SK] or
Fault 2
[SK]. The fault with the highest reading will be the primary
fault.
Note: For additional information about locating buried sheath faults and earth
return faults, please see the 3Mtm publication Cable and Pipe Locating Techniques at
www.3M.com/dynatel.
13. Locating 3M
™
Electronic Markers and
3M
™
iD Markers
(3M
™
Dynatel
™
Models 2250M-iD and 2273M-iD only)
A. Enabling/Disabling Marker Types
Menu [6] + >>More [SK:4] + Setup [SK:6] + >>More [SK:6d] + Marker Type [SK:6f]
The unit will default with all markers enabled (
3
).
1. Press the up/down arrows [SK] to highlight a
utility to enable or disable.
2. Press
Enabl/Disabl
[SK].
− Only the markers that are enabled (✓) will
be available in the locate mode.
3. Press
Locate/OK
[5] to save settings or
Exit
[SK] to cancel.
B. Alert Mode
While tracing a cable or pipe, it is possible to search for markers.
1. Press
Alert
[SK].
− If the unit is in Dir Pk, DirNull or Ind Pk,
a prompt will notify the operator that alert
mode only functions in Special Peak
(Spl Pk) mode.
2. Press
Mode
[SK Toggle] for Spl Pk.
3. Press
Alert On
[SK Toggle].
Содержание Dynatel 2250M
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