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Fugro Instruments

Induced Polarisation/Resistivity @ Fugro Instruments


Technical specifications

  ELECTRICAL
- Drives a loop or grounded dipole
- Turnoff time: Under 10 µsec for a resistive load; 125 µsec for a 300 x 300 m loop (16 ohms resistance, full current)
- Maximum input: 10KVA @ 30°C
- Output voltage range: 50 to 1000 V
- Output current range: 0.2 to 20A (Optional 30A)
- Current stability: +/- 0.2%
- Frequency range: DC to 8 kHz

SWITCHING CONTROL
- Switching controlled by external device
- Recommended transmitter controller: Zonge XMT-32S
- Waveform type: Capable of virtually any type of pulse waveform, limited by external controller device

CONTROLS
- Power ON/OFF
- Transmit/reset switch
- Current adjust pot, continuously adjustable, locking
- Voltage range switch (50-250 V, 200-500 V, 450-750 V, 700-1000 V)
- Current adjust pot, continuously adjustable, locking

DISPLAYS
- Analog input voltage meter, 0-150 V
- Analog output voltage meter, 0-1000 V
- Mode LEDs - Direct / Feedback
- Power on/off lamp, transmit lamp, output lamp
- LCD:
-- Output current (+/- 0.01A)
-- Input power (0-30KW)
-- Transformer temperature
-- Loop turnoff time (microseconds)
-- Indicator lamps: control power on, transmit on, transmit polarity
-- Fault indicator lamps: output and input overcurrent, output and input overvoltage, end of regulation, alternator overvoltage, open circuit


OUTPUT JACKS
- Current calibrate terminals (50 mV/A)
- Output current terminals
- Grounding jack

POWER
- Three-phase, 120 VAC, 400 Hz
- Power connector: four-pin military screw-type with locking ring
- Recommended motor generator set: Zonge ZMG-9

OPTIONS
- Spare parts kit (standard and extended kits available)
- LCD heater for temperatures below -15°C (+5°F)
- Current monitor isoamp module
- Resistor load bank
- Switch box for rapid switching of dipole pairs
- Internal timing board for specified IP-range frequencies
- 30 amp output

 Zonge GGT-10 Transmitter Specifications
GENERAL

  • Description: Broadband, constant-current, time and frequency domain, medium power geophysical transmitter
  • Enclosure: Welded, hardened aluminum frame inserted into a high impact fiberglass case
  • Size: 53 x 51 x 37 cm (21 x 20 x 14.5 in)
  • Weight: 51 kg (113 lb)
  • Operating temperature: -40° to +55°C ( -40° to +130°F)
  • Operating humidity: 0 to 90%, non-condensing


FEATURES

  • Constant current supply
  • Used for time/frequency domain IP, Resistivity, CR, TEM, CSAMT
  • Broadband: DC to 8 kHz (standard)
  • Outputs up to 1000 V, 20A (Optional 30A)
  • Fast turn off time: 125 µsec (300 x 300 m loop)
  • Drives a loop or grounded dipole
  • Efficient, modular design
  • Rugged design reliable in all climates
  • Optional internal time base


 
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