Guideline Geo ABEM Terrameter LS 2 Quick Manual

For more detailed and in-depth instructions regarding proper usage of the instrument, please consult the
The current and voltage transmitted can be life threatening. The emergency button must
be engaged while working with connected cables and electrodes. Before starting ANY
measurements, ensure survey cables and electrodes are not being handled or touched.
Keep connectors dry and clean. Poor connector handling and maintenance are the
main causes of cable failure. Always interconnect dust caps to keep them clean and
dry during measurements (right).

LAYOUT PROCEDURE

A. Setting-up for survey
- Measure a straight line along the ground. Profile length
= (no. of electrodes – 1) * electrode spacing.
- Hammer electrodes vertically into the ground along
survey line (depth < 1/10 of the electrode spacing).
- Place Take-out 1 of Cable 1 adjacent to the first
electrode in the spread. Walk cable reel 1 along the
survey line until all take-outs on the cable are aligned
with an electrode.
- Next, place Take-out 1 of Cable 2 at the next available
electrode. Walk cable reel 2 along survey line until all
cable take-outs are aligned with an electrode.
- Repeat with Cables 3 & 4. The last take-out (highest
number) on Cable 4 should coincide with last electrode.
B. Connecting and powering the system
- Press the emergency stop button in; this should be
the case whenever handling the cables / electrodes.
- Use cable joints to connect Cable 1 & 2 and Cable 3
& 4. Important: cable joints are directional. Ridges
on the cable joints should be towards the instrument.
- Connect jumper wires between cable take-outs and
electrodes (preferably connected to upright section).
ABEM Terrameter LS 2
Quick guide for 4-cable 48 & 64 electrode systems
- NOTE: If the electrode spacing
is much smaller than the cable
take-out spacing, avoid
coiling and excessive
overlapping of spare cable
between the take-outs (right).
- Take-out numbers should always increase along profile.
- TIP: To avoid confusion when processing results, profiles
should run in southerly-to-northerly or westerly-to-easterly
direction.
- Finally, place the ABEM Terrameter LS 2 instrument and
external battery in the middle of the survey line (between
Cable 2 and Cable 3).
- Put Cable 2 into Connector 1, and Cable 3 into Connector 2
on the instrument end panel.
- Using the external power cable, connect the instrument to
an external 12V car battery.
- Press the power button on the instrument to start.
Clicking noises will be audible during this start-up as
the instrument exercises the relay matrix.
ELECTRICAL RESISTIVITY
ABEM Terrameter LS 2 User Manual
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