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Resistivity imaging for environmental applications
- Compact yet powerful
- ± 600 V - 200 W - 2.5 A
- Automatic ranging
- Automatic switching
SYSCAL R1 Plus Switch-48 (or Switch-72) is a new all-in-one multinode resistivity imaging system. It features an internal switching board for 48 (Switch-48) or 72 (Switch-72) electrodes and an internal 200 W power source. The output current is automatically adjusted (automatic ranging) to optimise the input voltage values and ensure the best measurement quality. The system is designed to automatically perform pre-defined sets of resistivity measurements with roll-along capability. Two strings of cable with 24 electrode take-out each (or 36) are connected on the back of the resistivity meter. Made of heavy duty seismic cable, these strings are available with standard 5 or 10 m electrode spacings. Customized cables may also assembled for special arrays or non-standard applications.
Compact, easy-to-use and field proof, the SYSCAL R1 Plus Switch measures both resistivity and chargeability (IP). It is ideal for environmental and civil engineering applications such as pollution monitoring and mapping, salinity control, depth-to-rock determination and weathered bedrock mapping. It can also be used for shallow groundwater exploration (depth and thickness of aquifers).
With the SYSCAL R1 Plus Switch, resistivity surveys can be performed very efficiently with one operator only.
The well-known reliability and accuracy of the SYSCAL range of resistivity meters will also mean extra value both for the contractor and the results end-user.
ACCURACY OF MEASUREMENTS:
- Automatic SP compensation including linear drift
- Digital stacking for noise reduction
- Standard deviation computation
- Noise may be monitored before injection
Measured parameters
Electrical resistivity & chargeability (IP)
Technical specifications
OUTPUT CURRENT
- Automatic ranging (microprocessor controlled)
- Intensity: up to 2500 mA
- Voltage: up to 600V
- Power: up to 200 W
- Selectable cycle time of 0.25, 0.5 , 1 or 2 s
- Current measurement precision: 0,5% typical.
INPUT VOLTAGE
- Measuring process: automatic ranging and calibration
- Input impedance : 10 Mohm minimum.
- Input voltage protection up to 1000V, range from –10 V to +10 V.
- Power line rejection
- Voltage measurement precision: 0.5% typical
- Noise reduction: continuous stacking selectable from 1 to 255 stacks.
- SP compensation through automatic linear drift correction.
- Resistivity accuracy: 0,5% typical
- Induced polarization (chargeability) measured over four predefined windows.
- Chargeability accuracy: 1% of measured value for input voltage higher than
10 mV.
GENERAL
- Weather proof, shock resistant fiber-glass case
- Operating temperature: -20 to +70 °C
- Dimensions: 31 x 23 x 35 cm.
- Weight: 11 kg
- Internal memory for 2700 readings
- Power supply: two internal rechargeable 12V, 7 Ah battery ; optional external
12V backup car battery for transmitter power
- Autonomy with internal battery: several thousands of readings
- Standard cable string weight: 15 kg each for 5m spacing
