GF-Instruments - Model ARES -Automatic Resistivity Systems

• 2000 V_p-p - 5 A - 850 W Transmitter
• 2D/3D Resistivity & IP Tomography
• VES, RP, SP Measurements
• up to 10 Adjustable IP Windows
• Easy-Control System
• Active Multi-Electrode Cables
• Passive Cables with Switch Box
• Roll-Along Possibility

Applications:

Groundwater explorations, geotechnical investigations, monitoring of dams and dikes, environmental studies, pollution plumes mapping, geological surveys, mineral prospecting, archaeology, detecting of cavities, underwater, marine, borehole and cross-hole measurements.

Standard accessories:

• Transport case
• T-piece (for connection of multi-electrode cable sections and cables for current and potential electrodes)
• Cable for external 12 V battery
• RS232C and USB cables
• AC adapter (for all countries)
• PC software ARES (MS Windows based)
• User manual

Optional accessories:

• Multi-Electrode cable sections - active and passive
• Switch box (attachable 48-channel adapter) for passive multi-electrode cables
• 12 V attachable battery pack with fast 3-stage battery charger
• 12 V electronic power supply
• VES-Adapter (for 5 pairs of potential electrodes)
• Cable reels
• Stainless steel electrodes, non-polarizable electrodes
• Processing software for 2D/3D inversion, VES interpretation and mapping (Res2DInv/Res3DInv, IPI2Win, Surfer)

Measuring methods:

• 2D/3D Multi-Electrode Resistivity and IP Tomography
• VES - Vertical Electrical Sounding (resistivity and IP)
• RP - Resistivity and IP Profiling
• SP - Self Potential

Supported arrays:

• Wenner Alpha / Beta / Gamma, Wenner-Schlumberger, Dipole-Dipole, Pole-Dipole, Reverse Pole-Dipole, Pole-Pole, Equatorial Dipole-Dipole, Cross-Hole, Borehole-Surface, user defined configurations

Measurement - features:

• Self-adapting control system
• Automatic ranging and calibration
• Automatic pulse cycling and checking of measured values
• Easy interruption of the measurement
• Capability of profile prolongation by means of multi-electrode cable rolling

• Total accuracy:
  better than 1 % (typically)

• IP - Induced Polarization (Chargeability):
  up to 10 adjustable IP-windows, each max. 30 s, step 20 / 16.66 ms

• Pulse:
  0.3 s - 30 s, step 0.1 s

• SP compensation:
  constant and linearly varying SP cancellation

• Stacking:
  manual or automatic (with self-adaptive setting)
  adjustable optimum measured voltage and maximum acceptable measurement error

• Stored values:
  position of the measured point, output current, input voltage, SP, apparent resistivity, standard deviation, chargeability with standard deviation for up to 10 IP windows

• Number of electrodes:
  max. 200 in one array

• Line length for ME cable:
  max. 10 km

Control unit

• Easy-Control system, no need of PC for the measurement
• Alphanumeric keyboard, large LCD display
• Measuring system can be upgraded via Internet
• Safety switch

• Memory:
  16 Mbit, up to 100 files, 70,000 readings

• PC interface:
  RS232 and USB

• PC software:
  provides data download and export for processing programs (RES2DINV / RES3DINV, Surfer, IPI2WIN and others) as well as upload of measuring procedures

• Power supply:
  12 V car battery, 12 V attachable battery pack or generator
  AC/DC adapter for office

• Connectors:
  for PC, battery and a universal one for all measuring accessories (Multi-Electrode Cable, VES-Adapter, Switch box), measuring current and potential clamps

• Dimensions:
  15 x 21 x 40 cm

• Weight:
  5.9 kg

• Ambient conditions:
  -10°C to +60°C, weatherproof