ADMT-9 Multi-Function Natural VLF Detector
1. Instrument Introduction:
ADMT-9 Multi-Function Natural VLF Detector is the most advanced
product in ADMT series. It has 1-88 digital channels by random
combination, which finally solved the problem of natural electrical
field changing. Besides all the functions of ADMT-1, ADMT-2, ADMT-3
and ADMT-6, ADMT-9 adds magnetotelluric measuring and resistivity
calculating according magnetoelectric sensor. ADMT-9 is the real
magnetoelectric detector; also it could make prospecting by
artificial electric method together with our own high-power
transimtter. This could achieve the measuring methods like
resistivity, induced polarization and high density electronic
prospecting. As you see, it is the real Multi-Channels flagship
This instrument uses high-performance AD converter, advanced
technology like FFT digital filtering technique and so on; also
with ABS waterproof shell. Its technology totally exceed the
similar imported products. Based on the intelligentize design and
wireless control on digital channels, ADMT-9 leave out the
inconvenient wiring. It has the advantages: easy to operate,
portable, stable data, high capacity on anti-jamming, high
accuracy, efficient and so on.
1) Multi-Channels: random combination of digital channels from 1 to
88; also solved the problem of natural electrical field changing.
2) Multi-Functions: individual natural VLF geophysical prospector,
Multi-Channels natural VLF geological detector, two-channel
magnetoelectric detector, Multi-Channels high-power electrical
measuring system with real Multi-Functions and more parameters.
3) Wireless data transmission and instrument control, to leave out
part of inconvenient wiring.
4) High precision GPS time service and clock synchronization, could
finish measuring together with high-power central gradient array
method, Dipole-dipole measurement at the same time, which high data
collecting speed in outdoors.
5) Good looking from ABS waterproof shell, the functional models
could combine freely from different need.
6) High Accuracy: utilize the high performance amplifier and
imported core parts; also using high-performance AD converter,
advanced technology like FFT digital filtering technique. The
resolution up to 0.1uV +/- 1% and the fixed tolerance of frequency
is only 0.1%.
7) Wide frequency range: the frequency respond range is 0.1-5KHZ,
greatly improve the survey depth.
3. Main Applications:
1) widely used on metallic mines, non-metallic mines detailed and
general survey to low the risk of mineral investment and improve
mining exploration success rate and scientificalness.
2) Widely used on underground water detailed and general
prospecting to solve water using for people and animals drinking,
industry and agricultural irrigation.
3) Widely used engineering geological prospecting, archaeological,
city exploration, non-metal pipe survey and so on.
4. Main Technical Parameters:
1) Measuring voltage range: ±4V
2) Frequency range:0-5000HZ (fixed frequency model)
3) Resolution: 0.1uV
4) Measuring voltage accuracy: ±1% ±1LSB
5) Channels: 1 to 88 channel
6) clock synchronization accuracy and tolerance: 10us
7) A/D converter: 24-bit 1Msps
8) Data storage: USB format data storage (expanded to 4GB)
5. Main Parts of the ADMT-9:
Mainframe, data collector, high-power transmitter, outdoor power
supplying and so on.