Syscal Junior - Switch 48

Syscal Junior Switch 72 | Switch Plus 3D Resistivity Imaging Option | Syscal Junior Console
Brochure (PDF)

Resistivity Imaging For Environmental Applications

• Compact yet powerful

• 400 V - 100 W - 1.2 A

• Automatic ranging

• Automatic switching

SYSCAL Jr Switch-48 is a new all-in-one multinode resistivity imaging system. It features an internal switching board for 48 electrodes and an internal 100 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 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 Jr Switch-48 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 Jr Switch-48 resistivity surveys can be performed very efficiently with one operator only.

(Please, Click on the Picture for a Larger version)

RESISTIVITY IMAGING

• Aim: imaging the underground geological structures through surface electrical measurements

• Principle: transmitting a current I through two electrodes and measuring a voltage V with two other electrodes

• Apparent resistivity: p = K*V/I, K depending on the electrode separation

• Resistivity pseudo-section: contoured plot of the apparent resistivity data, using the electrode distance as a pseudo-depth parameter

• True resistivity section: contoured plot of the resistivity distribution obtained through the inversion of the measured data (using a non linear parameter fitting scheme)

• Applications: environmental studies, groundwater investigation, civil engineering, archaeology

FIELD LAY-OUT

ACCURACY

• Automatic SP compensation including linear drift

• Digital stacking for noise reduction

• Standard deviation computation

• Noise may be monitored before injection

DATA INTERPRETATION SOFTWARE

• RES2DINV or RESIX-2DI (PC), for pseudo-section inversion to true resistivity (and IP) 2D section.

• RES3DINV (PC), for inversion to true resistivity (and IP) 3D data

OUTPUT CURRENT SPECIFICATIONS

• Automatic ranging (microprocessor controlled)

• Intensity: up to 1200 mA

• Voltage: up to 400V (800V peak to peak)

• Power: up to 100 W

• Selectable cycle time of 0.5 , 1 or 2 s, programmable from 0.25 to 10 sec.

• Current measurement precision: 0,5% typical.

INPUT VOLTAGE SPECIFICATIONS

• Measuring process: automatic ranging and calibration

• Input impedance : 20 MW 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 SPECIFICATIONS

• 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 string weight: 15 kg each for 5m spacing

Ordering Information

Description		Order Number
Syscal Jr. Switch 48		500-400-0185_48

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