Syscal
R1 Plus, Switch 72
Resistivity Imaging For Environmental Applications
Switch Plus 3D Resistivity
Imaging Option
Syscal R1
Plus Console
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Compact yet powerful
- 600 V - 200 W new - 2.5 A
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Automatic ranging
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Automatic switching
SYSCAL R1 PLUS Switch-72 is a new all-in-one multinode resistivity imaging
system. It features an internal switching board for 72 electrodes and an
internal 200 W power source. The output current is automatically
adjusted (automatic ranging) to optimize 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. Four strings of cable with 18 electrode take-out
each 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 spacing. Customized cables may also assembled for special
arrays or non-standard applications. Compact, easy-to-use and field
proof, the SYSCAL R1 PLUS Switch-72 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-48 resistivity surveys can be performed
very efficiently with one operator only.
Click for
enlargementResistivity
Imaging
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Aim: imaging the underground geological structures through surface
electrical measurements
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Principle: transmitting a current I through two electrodes and
measuring a voltage V with two other electrodes
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Apparent resistivity: p = K*V/I, K depending on the electrode
separation
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Resistivity pseudo-section: contoured plot of the apparent resistivity
data, using the electrode distance as a pseudo-depth parameter
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True resistivity section: contoured plot of the resistivity
distribution obtained through the inversion of the measured data
(using a non linear parameter fitting scheme)
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Applications: environmental studies, groundwater investigation, civil
engineering, archaeology
Field Layout
Preset arrays (Wenner, dipole,…) or customized arrays are uploaded
through the user-friendly ELECTRE (version 2) PC software. The
roll-along capability is implemented. |
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Accuracy
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Automatic SP compensation including linear drift
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Digital stacking for noise reduction
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Standard deviation computation
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Noise may be monitored before injection
Data Interpretation Software
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RES2DINV or RESIX-2DI (PC), for pseudo-section inversion to true
resistivity (and IP) 2D section.
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RES3DINV (PC), for inversion to true resistivity (and IP) 3D data
Output Current Specifications
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Automatic ranging (microprocessor controlled)
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Intensity: up to 2500 mA
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Voltage: up to 600V (1200V peak to peak)
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Power: up to 200 W new
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Selectable cycle time of 0.5 , 1 or 2 s, programmable from 0.25 to 10
s.
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Current measurement precision: 0,5% typical.
INPUT VOLTAGE SPECIFICATIONS
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Measuring process: automatic ranging and calibration
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Input impedance : 20 MW minimum.
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Input voltage protection up to 1000V, range from –5 V to +5 V.
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Power line rejection
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Voltage measurement precision: 0.5% typical
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Noise reduction: continuous stacking selectable from 1 to 255 stacks.
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SP compensation through automatic linear drift correction.
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Resistivity accuracy: 0,5% typical
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Induced polarization (chargeability) measured over four predefined
windows.
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Chargeability accuracy: 1% of measured value for input voltage higher
than 10 mV.
General Specifications
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Weather proof
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Shock resistant fiber-glass case
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Operating temperature: -20 to +70 °C
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Dimensions: 31 x 23 x 35 cm. Weight: 11.5 kg
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Internal memory for 2700 readings
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Power supply: two internal rechargeable 12V, 7 Ah battery ; optional
external 12V backup car battery for transmitter power
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Autonomy with internal battery: several thousands of readings
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18 cable string weight: 11 kg each for 5m spacing
Ordering Information
Description
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Order Number
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Syscal R1 Plus Switch 48
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500-400-0185R1_48 |