SGS-TEM

FastSnap SGS-TEM SMT32

SGS-TEM Piket-32 telemetric system is designed for deep TEM surveys

Applications

ADVANTAGES

SGS-TEM receiver units and acquisition technologies for resistivity surveys complying with requirements of high resolution and high density in space and time
open-channel acqusition at uniform sampling rates
processing on an external PC with an option of choosing best appropriate noise attenuation algorithms
system configuration for TEM data acquisition in any noisy urban and industrial areas
appreciation by Russian and foreign clients: more than 40,000 km profiles collected

ΔΣ 32-bit ADC ensuring high accuracy of measurements;
25 μs to 20 ms sampling rate;
up to 20,000 counts;
25 μs to 230 s recording time range;
two switch channels at input;
symmetrical input;
1—512 programmable gain amplifier (PGA) accurate to 0.3%;
up to 290 dB full designed dynamic range: 192 dB ADC, 54 dB PGA, and 46 dB 200А current switch;
up to 64 telemetric channels;
any sensor type: multi-turn loop, induction sensor, or grounded line;
synchronization by a precise GPS/GLONASS system (10-6 s) or externally.

powered from a 220 -380 V three-phase genset with a current rectifier (pulsing coefficient 1-1.5%);
12 to 600 V input and output voltage, DС current;
300 A maximum current, accurate to ≤1%;
GPS/GLONASS synchronization system (error ≤5∙10^-7 s);
user-specified sequence of signals: 500 ms, 1 … 32 s;
user-specified pulse/pause ratio from 1:9 to 9:1;
transmitter current turn-off time, 500 m × 500 m loop: 250 μs at 40 A and 1.7 ms at 170 А;
built-in or PC control;
current waveform digitizing for pulse count in processing; an option for automated control from TEM recording program (automatic reading according to preset parameters);