IP Receiver Description

The IP receiver: 8, 16, 24 or 32 channels
Model GRX8-32 with PDA included

The GDD IP Receiver is a compact and low consumption unit designed for high productivity resistivity measurements.

It features some high capabilities allowing working in any field conditions.
It can be configure in pole or dipole reception (dipole-dipole, pole-dipole and pole-pole time domain IP surveys).

The receiver uses a PDA computer to process acquisition data. A VGA display allows visualizing the results while standing up. The operating system is Windows CE and the software can easily be updated via Internet.

CHARACTERISTICS

• Reception poles/dipoles:
  8 poles or 8 dipoles, with possibility to upgrade to 16 poles or 16 dipoles.
  Soon available: 24 and 32 poles / dipoles.
  for dipole-dipole, pole-dipole or pole-pole arrays.
  
  
• Programmable windows: The GRx8-32 offers twenty fully programmable windows for a higher flexibility in the definition of the IP decay curve.
  
  
• User modes available: Arithmetic, logarithmic, semi-logarithmic, Cole-Cole, IPR-12 and user define.
  
  
• IP display: Chargeability values, Resistivity values and IP decay curves can be displayed in real time. The GRx8-32 can be used for monitoring the noise level and checking the primary voltage waveform.
  
  
• Internal memory: The memory of 64 megabytes can store 64,000 readings. Each reading totalizes one kilobyte and includes the full set of parameters characterizing the measurements on 8 channels. The data is stored in flash memories not requiring any lithium battery for safeguard. A flash card stores the full wave signal for post-treatment processing..

  The control panel is reliable and easy to use Click on the picture to enlarge it

EQUIPEMENT

The following equipment is shipped:

• 1 IP receiver module
  
• 1 IP receiver battery charger
  
• 1 PDA
  
• 1 RS-232 cable
  
• 1 Operation manual

Components included with
GDD IP Receiver GRx8-32
Click on the picture to have full list of items included

FEATURES

• 8 channels expandable to 16, 24 or 32
  
• Reads up to 32 ch. simultaneously in poles or dipoles
  
• PDA menu-driven software / simple to use
  
• 32 channels configuration allows 3D Survey:
  4 lines X 8 channels - 2 lines X 16 channels or
  1 line X 32 channels
  
• Link to a PDA by Bluetooth or RS-232 port
  
• Real-time data and automatic data stacking (Full Wave)
  
• Screen-graphics: decay curves, resistivity, chargeability
  
• Automatic SP compensation and gain setting
  
• 20 programmable chargeability windows
  
• Survey capabilities: Resistivity and Time domain IP
  
• One 24 bit A/D converter per channel
  
• Gain from 1 to 1,000,000,000 (108)
  
• Shock resistant, portable and environmentally sealed
  

SPECIFICATIONS

• Number of channels: 8, 16, 24 or 32
  
• Survey capabilities: Resistivity and Time domain IP
  
• Twenty chargeability windows: Arithmetic, logarithmic, semi- logarithmic, IPR-12 and user defined
  
• Synchronization: Automatic and re-synchronization process on primary voltage signals
  
• Noise reduction: Automatic stacking number
  
• Computation: Apparent resistivity, chargeability, standard deviation, and % of symetrical Vp
  
• Size: 41 X 33 X 18 cm (16 X 13 X 7 in)
  
• Weight: Weight (32 channels): 8.9 kg (19.6 lb) and PDA 1.3 kg (2.9 lb)
  
• Enclosure: Heavy-duty Pelican case, environmentally sealed
  
• Serial ports: RS-232 port and Bluetooth to communicate with a PDA.
  
• Rx 8-32 Temperature range: -45 to +60°C (-49 to +140°F)
  
• Humidity range: Waterproof
  

POWER

• Power: 12 V rechargeable. Over 12 hours nominal operation at 20°C with 8 channel unit; additional batteries mounted internally or external battery input for extended operation in cold climates.

ELECTRICAL CHARACTERISTICS

• Ground Resistance: Up to 1.5
• Signal waveform: Time domain (ON+, OFF, ON-, OFF)
  
• Time base: 0.5, 1, 2, 4 and 8 seconds
  
• Input impedance:
  
• Primary voltage: ±10 uV to ±15 V for any channel
  
• Maximum input voltage: ±40 V for any channel, protection up to ±320 V
  
• Input: True differential for common-mode rejection in dipole configuration
  
• Voltage measurement: Resolution 1µV
  
• Chargeability measurement: Accuracy 0.6% typical
  
• SP offset adjustment: ± 5 V, automatic compensation through linear drift correction per steps of 150 µV.
• Filter: Eight-pole Bessel low-pass 15 Hz, notch filter 50 Hz and 60 Hz
  

PDA included with GRX8-32
Standard Juniper - Allegro CX mobile PDA

• PDA: Standard Juniper - Allegro CX mobile PDA ____computer provided with the GDD receiver ____with all accessories.
  
• Operating system: Windows CE
  Comes with Bluetooth and RS-232
  
• Processor: Intel XScale, 400 Mhz
  
• Memory: 64 MB or 128 MB Flash, 64 MB RAM
  
• Display: 7.2" (183 mm) VGA STN transflective color LCD with backlighting.
  
• PDA Temperature range: -20 to +50°C (-4 to +122°F). Using Bluetooth, the PDA can be kept warm by the operator and readings can be taken while standing up.

Copywright ©
Instrumentation GDD Inc.
Products and specs are subject to change without notice

 

Instrumentation GDD Inc.
3700 boul. de la Chaudiere, Suite 200
Quebec (Qc)
CANADA
G1X 4B7
Phone: +1 (418) 877-4249 - Fax: +1 (418) 877-4054
www.gddinstrumentation.com
Contact us