SYSCAL Pro resistivity & IP equipment for SOUNDING, IMAGING and MONITORING SYSCAL Pro Switch MAIN FEATURES • The SYSCAL Pro Switch is a versatile electrical resistivitymeter which combines a transmitter, a receiver and a switching unit in one single casing. It is supplied by a 12V battery. • The measurements are carried out automatically (output voltage, stacking number, quality factor) after selection of limit values by the operator, and are stored in the internal memory. • The output specifications are 800V (1 600V peak-to-peak) in switch mode, 1 000V (2 000V peak-to-peak) in manual mode, 2.5A, and 250W with the internal converter and a 12V battery. • The SYSCAL Pro Switch uses multi-core cables for controlling a set of electrodes connected in a line or in several lines. The standard number of electrodes: 24, 48, 72, 96, 120, can be increased through Switch Pro units for 2D or 3D ground images. • The ten channels of the system permit to carry out up to 10 readings at the same time for a high efficiency. * The Induced Polarisation chargeability (IP) is also measured through 20 windows for a detailed analysis of the decaying curves displayed on the graphic LCD screen. • The SYSCAL Pro Switch unit can be operated with cables in boreholes, or cables pulled on the ground by a vehicle or on the surface of the water by a boat for continuous acquisition surveys. • The SYSCAL can be used for time lapse readings (monitoring) ID, 2D, 3D, 4D RESISTIVITY INVESTIGATIONS for characterizing underground structures: - ENVIRONMENT - CIVIL ENGINEERING - GROUNDWATER - ARCHAEOLOGY - MINING EXPLORATION TEN SIMULTANEOUS CHANNELS: for high speed data acquisition, up to 1 000 rdgs/mn UP TO 800 -1 000V, 2.5A OUTPUTS: for penetration & data quality AUTOMATIC SWITCHING CAPABILITY: for 24, 48, 72, 96, 120, up to 20 000 electrodes RESISTIVITY, INDUCED POLARIZATION & SELF POTENTIAL: twenty IP chargeability windows PC SOFTWARE: - ELECTRE Pro: sequence management - PROSYS II: data transfer, process, display - COMSYSPro: control of SYSCAL by PC - SYSMAR: continuous acquisition - PROCESSING: x2ipi (w/seq manag.) - INTERPRETE: ERTLab (w/seq manag.) Res2/3Dinv, 1X1D, Winsev SPECIFICATIONS - Memory and Communication: 44 000 readings (20MB); USB & SD card (128MB) link & Serial Ports - GPS input for coordinates via Serial Port (COM 1) - Fiber glass casing, weather proof - IP66 - Temperature range: -20 to +70°C - SYSCAL Pro Switch 72: 31x23x36cm, - Weight: 13kg, Cable w/ 24 take-out: 23kg - User defined protocols: Wenner, dipole-dipole, pole-dipole, Schlumberger, and pole-pole. - Tot. accuracy: 0.2% - Galvanic Isolation of Channels

The SYSCAL Pro Switch units use segments (seg) of multi-core cable which are reversible and interchangeable. For instance, the SYSCAL Pro Switch 48 with 10m spacing has 4 segments of cable a, b, c, d, with 12 electrodes each, for a total line length of 480m. The SYSCAL is placed in the middle of the line, between segments b and c. If the profile to measure is longer than the line length, a ROLL ALONG technique can be applied where, after a first set of readings with (a, b, c, d), segment a is placed after segment d to form a new (b, c, d, a) combination etc. All the SYSCAL Pro Switch units (48,...

ACQUISITION TIME for 1 000 READINGS Resistivity mmao.o SYSCAL Pro options and accessories ‘RECEIVER only’ OPTION with this option, the SYSCAL Pro can be used as a separate receiver, the current being generated by external powerful transmitters such as VIPs (3000V, up to 10kW) RESISTOR TEST BOX The resistor test box permits to run a sequence of readings on a set of resistors and check the good operation of the SYSCAL Pro Switch INSULATION TEST BOX The insulation test box detects short circuit and open line at 800V test voltage for multi-core cables and for testing internal relays of SYSCAL Pro...

SYSCAL Pro for continuous land survey P11 DYNAMIC ACQUISITION for LAND SURVEYS The SYSCAL Pro can be used with a specific cable pulled on the ground by a light vehicle, for a continuous acquisition of resistivity readings. The cable features 13 cylindrical stainless steel electrodes (8cm diameter, 25cm length, 4.2kg) at 2m spacing: - 2 for transmitting the current, - 11 for simultaneously measuring ten potential channels. electric cable pulling cable Recommended electrode array: reciprocal Wenner Schlumberger A PC continuously records the 10 resistivity values and the GPS data, displays profiles...