Subsurface Magnetic Survey Instruments deep Geophysical Exploration Instrument

Transmitting voltage

≤200V3

Transmitting current

≤50A

Current measurement precision

current range before power supply being cut off is 0~50A, display resolution is 0.01A.

Power supply frequencies

 0.0625Hz, 0.125Hz, 0.25Hz, 0.5Hz, 1Hz, 2Hz, 4Hz, 8Hz, 16Hz, 32Hz

Transmitting waveform 

+ON, OFF, -ON, OFF, equal width and dual polarity

Turn-off delay time

1μs~1000μs

Turn-off time

≤1.2μs (pure resistance), changing with the transmitting current and transmitting coil when connecting to the coils

Damping resistance

1000Ω

Transmitting coil

0.1km×0.1km single turn ~ 2km×2km single turn

Synchronization mode

external synchronization (cable, GPS)

Power supply

internal 12V8.6Ah rechargeable battery (or external 12V power supply) lasting for over 10 hours

Dimension

525×436×217mm3

Weight

18.5kg

Working temperature            

-10°C~+50°C

Receiver

Number of channel

1

Pre-amplification gain

8, 32 times

Main amplification gain

1, 2, 4, 8, 32, 64, 128 times

Band-pass

0~50k Hz (liner phased filter), full band-pass 0~400k Hz

Suppression

80dB 

A/D

16 bit

Min sample interval

1μs

Trace number

≤128

Stacking times

1~9999 time

Synchronization mode

internal 12V9.6Ah rechargeable battery (or external 12V power supply) lasting for over 10 hours

Pocket PC

Windows Mobile 6.0 system with software such as Word, Excel, etc., 320x240 true color, 64MB Flash Rom/ 64MB SDRAM/64MB 2GB CF card, able to store over 200,000 readings of sampled data,2 original rechargeable batteries

Ports

Bluetooth, infrared and serial port 

Dimension

340×295×152mm

Weight

5.3kg

Working temperature

-10°C~+50°C