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| Technical
specifications |
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Six input dipoles
- Input impedance 10 Mohms
- Input voltage range : each dipole : 10 V
max, sum of voltage of dipoles 2 to 6 : 15 V
max
- Automatic SP bucking ±10 V with linear
drift correction up to 1 mV/s
- 20 bits A/D converters
- 50 to 60 Hz power line rejection
- Sampling rate : 10 ms
- Common mode rejection :100 dB (for RS = 0)
- Computation of apparent resistivity,
average chargeability and standard deviation
- Grounding resistance measurement from 0.1
to 467 Kohms
- Battery test : manual and automatic before
each measurement
- Memory capacity : 2500 readings
- RS 232 link for data transfer to micro
computers and printers (300 to 19 200 bauds
rate)
- Remote control through the serial link
STANDARD MODE (TIME DOMAIN)
- Signal waveform : Time Domain (ON+, OFF,
ON-, OFF) with pulse duration of 0.5, 1, 2,
4, 8 seconds
- Up to ten arithmetic, logarithmic, or
fully programmable IP chargeability windows
- Primary voltage : resolution : 1 µV after
stacking, accuracy : typ. 0,3 %
- Chargeability : resolution : 0.01 mV/V,
accuracy : typ. 0,6 %
FREQUENCY MODE
- Signal waveform : either (ON+, ON-) or
(ON+, OFF, ON-, OFF)
- Pulse duration : 1s or 2s
- Frequency effect and relative phase of
fundamental and third harmonics
- Resolution : about 0,01 degree after
stacking
GENERAL FEATURES
- Dimensions : 31x21x21 cm
- Weight : 8 kg with internal battery (6 kg
with dry cells)
- Operating temperature : 40°C to +70°C
- Power supply : 12 V internal battery, (six
1,5 V D size dry cells, optional) ; a 12 V
external battery can also be used |
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 VIP 10 000, 10 kW IP transmitter
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The
Light weight 4 kW transmitter powered by a standard motor generator
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Up to 20 A and 3000 V
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Microprocessor controlled
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Standard Motor Generator
In surveys requiring high power a key practical problem is the local availability of a motor generator.
Being powered by a standard motor generator, the VIP 10 000 offers the highest flexibility in its class.
Its power input requirements are:
• 180 to 250 V voltage for maximum output power
• 45 to 800 Hz frequency
• Three-phases for maximum output power
• One phase for lower output power
• Motor generator or power line supply
The operation of the VIP 10 000 with such a large range of power sources will drastically reduce the
transportation and maintenance problems inherent to the field survey constraints.
VIP 10000 LOAD LIMITS
High Outputs:
In medium and high resistivity areas, the amount of current driven into the ground depends on the maximum output voltage provided by the transmitter; in addition in low resistivity areas, it is also dependent on the maximum output power.
The VIP 10 000 features the following major benefits:
• High output voltage: 3000 V
• High output power: 10 kW
• High output current: 20 A
Full microprocessor control:
The full microprocessor control of the VIP 10 000 allows the following basic benefits:
• Ease of use through interactive menus
• User friendly selection of the current value
• Continuous display of output current, voltage, power, ground resistance values
• Display of intelligent messages and warnings in case of a problem or malfunction: overload, short circuit,
input, under or overvoltage.
Heavy Duty Construction:
Very high quality connectors, and heavy duty industrial components are used throughout. The VIP 10000
is shock resistant and weatherproof, for a higher reliability.
Fully Automated:
The VIP 10000 is designed for ease of operation. It has a much simplified front panel: current,
dipole and frequency (in the frequency domain) settings are the only parameters to be selected
by the operator. All the other functions, like voltage range setting, are fully automated.
Programmable:
Programming functions are also available, either through the front panel, with a special key combinaison,
or from an external computer terminal. These functions are used to select the parameters and options
that are not normally changed during a survey: operating mode, time or frequency domain, cycle time,
frequencies. This approach reduces front panel cluttering and drastically reduces the
possibility of operator mistake. Instrument reliability is thus increased.
Complete Display:
A back-lighted liquid crystal alphanumeric display is provided for the simultaneous indication of all
output parameters. Output current, output voltage, contact resistance and output power are
continuously displayed.
Intelligent Regulation:
The VIP 10000 internal microprocessor is capable of excellent current regulation in almost any load.
Current may be selected by the operator in preprogrammed steps from 50 mA to 5 amperes. Intelligent
current adjustment algorithms are always in operation. For example, the contact resistance will
occasionally be too high for the VIP 10000 to provide the requested current setting. In such cases,
the VIP 10000 will display a warning message and will set the current to the maximum value allowable
under that combination of current setting and contact resistance. Some reserve current capacity will
always be kept to insure that the current stays constant during the measurements, whatever the contact
resistance fluctuations.
Remote Control:
The VIP 10000 is provided with a remote control port. By using radio modems, it can be
operated from a remote location. The VIP 10000 can also be linked to an intelligent receiver,
or to a computer, for the automatic recording of current settings. Finally, synchronization
with a receiver or system is also possible in both directions (i.e. Rx to Tx or Tx to Rx).
Copyright
© 1998 IRIS Instruments
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Company Profile