HT instruments HT5000 - Manual (Page 24)

HT-5000
EN - 23
During the depth measuring process, the following symbols are used to notify the user
about certain characteristics and errors:
Symbol Meaning
For of one of the following reasons, the depth could not be
measured:
• The signal received was too weak or too irregular
• The receiver was not held steady enough during the measure
• The receiver was not positioned directly above the line at the
beginning of the process
The depth of the metallic conductor / probe exceeds the measuring
range (5m / 7m). Depth measurement cannot be performed
The depth of the metallic conductor amounts to less than 30 cm (1 ft).
Such conductors must be specially marked in order to prevent
damage during construction
The receiver was moved too far to the left or right while making a
rough estimate
. Move in the opposite direction until the following
symbol appears
Proceed as described in step 8 on the previous page