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AGI’s Active Dual-Mode Electrode Cables (U.S. Patent 6,404,203) are used for ultra-sensitive automatic induced polarization (IP) measurements using nonpolarizable electrodes. The dual-mode electrodes have a receiver channel that is isolated from the transmitting stainless steel electrode.
There are two main applications for dual-mode electrode cables:
Mapping of dense nonaqueous phase liquid (DNAPL) spills in the ground. Such as:
Methylene chloride, used in processing chemicals and pharmaceuticals.
Perchloroethylene, used in dry cleaning and metal surface cleaning.
Trichlorethylene, used in refrigeration and HVAC systems.
Thick transmitter wires.
Receiver wires are electrically shielded from the transmitter for a noise-free measurement.
Internal kevlar-strength member.
Distributed switching instead of a centralized switching box allows for thicker wires which will output more current.
Transmits through the stainless steel stakes and receives through the non-polarizable electrodes for more sensitive measurements, especially during induced polarization (IP) surveys.
Dual-mode electrodes with a patented separate receiving channel.
Connect the instrument anywhere along the electrode cable
No Switch Box needed
Easier to perform roll-along survey without a switch box
More depth penetration due to much less saw-tooth overlap pattern
Thick transmitter conductors
Shielded receiver conductors
Two modes of operation:
Normal mode: collect data using only stainless steel electrodes
Dual mode: transmit on stainless steel electrodes and measure on separate non-polarizable electrodes
|Smart Electrode Dimensions||∅34x145 mm (∅1.3”x5.7”)|
|Weight||0.25 kg (9 oz)|
|Cable Diameter||12 mm (0.5”)|
|Number of Electrodes||Virtually unlimited amount (theoretically over 65000 electrodes can be addressed)|
Each smart electrode is individually addressable and can be A, B, P1, P2, P3, P4, P5, P6, P7, P8, or P9 at any time
The electrode addresses can easily be re-programmed by software
Electrode Response Time
Any array type can be programmed by the user
|Operating Temperature||Operates to -5C, but ground temperatures very greatly so AGI does not recommend dual mode cables being used below freezing|
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