Estimating Depth And Current Of A Utility; Utility Line Depth - Leica DD120 Series User Manual

6
6.1
Taking a depth
reading

Estimating Depth and Current of a Utility

Estimating Depth and Current of a Utility

Utility Line Depth

For utility line depth, the locator needs to be used in conjunction
☞
with a signal transmitter. Refer to
Induction Mode
1. Set the locator to the required Signal
Transmitter frequency.
2. Position the locator directly over and at
90° to the direction of the utility.
☞
Ensure that the locator foot is
directly on the ground.
☞
Hold the locator upright and
take care not to move it.
3. Press and release the Depth Estimation
key.
4. The Line Depth screen displays the
measured depth.
DD130 and DD175: The measured cur-
rent (mA) is subsequently displayed.
☞
Lift the locator off the ground
by approximately 15 cm/6 in
and take a second depth read-
ing. This depth reading should
confirm the added height.
5. The depth is calculated as distance to
the centre of the utility! Allowances
should be taken into account.
Note the difference between a and b!
Actual depth of the utility.
a)
b) Displayed depth reading: Depth to
the centre of the utility.
5.4 Using the Transmitter in
and 5.5 Using the Transmitter in Connection Mode.
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0.50
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a b
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