|| Geoelectric Instrument / Imaging Instrument
ABEM Terrameter LS
A completely new concept of geo-electrical equipment.
The instrument itself let you check your data on site in the field thanks
to a large, 8,4 inch, colour screen that is extremely visible in daylight.
You can plot your pseudo-sections as you go. Further to that, the
instrument handles up to 12 input channels for highest possible
flexibility and productivity for both 2, 3 and 4 D measurements.
Terrameter LS has two more channels dedicated to QC of the instrument
performance. Full waveform records are stored to allow for an unmatched
potential of post-processing possibilities.
Get a first glimpse below:
Terrameter LS with a
plotted section of an imaging survey. Data on screen is a pseudo section
for data quality control.
The basic Terrameter LS has 4 input channels and a built
in switch box handling up to 64 unique electrode addresses. Thus one
instrument is all you need to manage in the field for the standard imaging
All you need for a
standard imaging measurement! (Note: not all electrodes and
jumpers needed are present in the picture)
Further to the above mentioned features we have
highlighted a few more below:
- Robust and safe imaging system measuring Resistivity,
Time-Domain IP and SP
- Designed for high reliability and robustness under
harsh field conditions.
- Highest productivity using ABEM unique roll-a-long
method and integrated GPS.
- On-site capabilities for data quality assurance, system
diagnostics and fault tolerance.
- Superior quality in data acquisition with powerful
transmitter and high dynamic range multi-channel receiver
- Open communication platform for data exchange, internet
connectivity and remote diagnostics (TCP/IP, USB)
Terrameter SAS 1000/4000 will still be
available and the support the Terrameter SAS will remain
unchanged. The SAS 1000 is the best option for applications that
only need one channel, as for example VES. Vertical Electric Sounding or
VES is still a popular method for applications as water well surveying.
Automatic System for Resistivity and IP Imaging
Built-in quality control
and feedback to operator.
Supports arbitrary cable
arrangements and electrode arrays (including Wenner, Schlumberger,
gradient, dipole-dipole, pole-dipole, pole-pole, square array, borehole
etc.) via user defined cable description and protocol
capability for 2D and 3D surveys.
High productivity rate
thanks to speed-optimised software (particularly in 4 channel
Software includes data
transfer from instrument to PC, protocol generation software, file
conversion software and pseudosection plotting.
Electrical imaging has
emerged as a prime method for infrastructure projects and environmental
studies in recent years, and the demand for better information is expected
to continue. In such applications the following
- High resolution at shallow depths.
- Automated data
acquisition for cost effectiveness.
- Superior area coverage through at
least two-dimensional information.
Output presented in easily interpretable form.
The ABEM Terrameter LUND Imaging System, developed in
cooperation with Dept. of Engineering Geology,
provides fast, accurate and automated resistivity imaging in 2D and 3D.
The entire data handling process is automated as far as possible,
including data acquisition, processing, interpretation and presentation.
This is made possible by utilising state of the art technology.
Key features of the LUND
- Integrated roll-along function.
electrode contact test.
- Option to measure IP.
- Terrameter SAS1000 (single
channel) or Terrameter LS (multi-channel) resistivity
and IP instrument, with integrated PC for
full control of data acquisition process and storage of
- Electrode Selector ES10-64e or ES10-64
connects to the
Terrameter through a single robust cable. Power supply via the
- Terrameter and Electrode Selector housed in rugged
water-proof (IP66) aluminum housing for reliable performance during harsh
- Field cable set with electrodes and cable
jumpers. Highly durable multi-conductor cable, terminated both ends with
military standard connectors.
- User-friendly acquisition and presentation
software for standard or user defined arrays.
A major advantage of the
method is that it produces continuous images of the variation in
properties in the subsurface. Electrical imaging can serve as an excellent
basis for planning detail investigations via for example a drilling and
sampling programme with optimised sampling locations. The detail
investigation results can then in turn be used as a base for a refined
interpretation of the electrical imaging data, leading to a comprehensive
and reliable model of the underground.
Typical areas of
- Groundwater resource management and
- Mapping and monitoring of contaminated
- Geotechnical pre-investigation
- Mapping/prospecting of natural
- Geothermal prospecting
- Sub-bottom mapping at
sea and in lakes
- Mapping of frozen ground/permafrost.
Resistivity imaging is a
robust method, which often produces good results even close to for example
power lines and railways, in contrast to EM methods that are mostly
useless near such installations. It is, however, important to realize that
disturbances can occur, and that false anomalies can arise from for
example metal pipes of other conductive objects in the ground.
method is well suited for long term monitoring. A series of measurements
taken at different times can give information about variations in water
content, movement of pollutants in the ground, seepage through embankment
Automated data acquisition allows a field crew to
carry out complementary investigations during measurement (e.g. leveling,
GPS positioning). However, the 4 channel version of the system offers very
high field productivity; in standard electrical imaging it means that the
major limiting factor is the pace of work of the field crew rather than