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ABEM Terrameter LSField-proven Imaging system measuring
Resistivity, time-domain IP and SP.
Designed for high reliability and robustness under harsh field conditions.
Highest productivity usingABEM unique
roll-along method.
Data f ile: Whole98 Model f ile: Whole98
ERIGRAPH - ABEM Instrument AB - Lunds Universitet - Terraohm
WENNER-SCHLUMBERGER 2D INVERTED MODEL
Hallandsåsen: March 1995 - July 1998
N S
Torleif Dahlin, Geotechnology, Lund University - 1999
46 75 120 200 320 510 830 1300 2200 3500 5600Resistivity/[ohmm]
190600 190800 191000 191200 191400 191600 191800 192000 192200 192400 192600 192800 193000 193200 193400 193600 193800 194000 194200 194400 194600 194800 195000 195200 195400 195600 195800 196000 196200 196400 196600 196800 197000 197200 197400 197600 197800 198000 198200 198400 198600 198800 199000 199200Distance/[m]
240 240200 200
160 160120 12080 80
40 400 0
Level/[m.a.s.l.]
BP13
BP12/KB12BP21/KB11
BP20/KB10 BP22/KB9EKB10BP11 EKB12B BP19 BP10 BP9+18 BP8 -- 240m NW line BP23/KB4
BP15/KB8
T T T T T T T T T T T T T T T T T T T T T T T T T T T T
++++++++++++++ ++++++
+
++ +++++++++++++
cable 1 cable 2 cable 3 cable 4
++++++
++++++
4 cables for an efficient roll-along survey!
Surveying principle for multi-electrode systems
Roll-along with 2x32 vs 4x21
Easy to use with multi-lingual graphical user interface on sunlight readable color LCD.
Integrated workf
low guidance
Multi-lingual
Open communication platform for data exchange, internet connectivity and remote diagnostics (TCP/IP, USB).
Built-in GPS
On-site capabilities for data quality assurance.
System diagnostics and fault tolerance.
• Built-in self-test of inputs and transmitter.
• Transmitter load, temperature, power disapation, power supply voltage monitoring
• Automatic monitoring of all relay switch operations.
• Relay coil current monitoring.
Superior quality in data acquisition with powerful transmitter and high dynamic
range multi-channel receiver.
Transmitter
• True constant current transmitter
• 250 W output power
• 600 V max output voltage
• 2.5 A max output current
• Full waveform monitoring of output current and voltage
Transmitter working ranges
0
100
200
300
400
500
600
700
0.001 0.01 0.1 1 10
10W
100W (SAS)
250W
Voltage
Current
Receiver
• 4 or 12 input channels
• Galvanically isolated inputs
• Arbitrary No. of IP time windows
• Full waveform sampling and recording(up to 30k sample/s).
• 24 bit A/D converters
• Auto-range ±5V or ±600V
The advantage ofgalvanically isolated Inputs
A M 1 N 1 M 2 N 2 M 3 N 3 M 4 N 4 B
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
R X1 R X2 RX3 RX4
TX
• Superior common mode range (2 kV).• Eliminates over-range measuring errors.
Electrode switch • Full 10x64 matrix relay switch.• Efficient 12 channel switching.• 64 electrodes simultaneous switch capacity
(=> 81 electrodes with standard cables).