ATEM-3 Transient Electromagnetic prospector
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Main Advamtages 1. USB port data transmission is easy for human and device communication; 2. Supply a kind of portable electromagnetic system fit for complex geological conditions for geophysical prospecting and engineering detection. 3. Wire synchro
Main Functions:
1. Ransient
Electromagnetic Method (TEM) is a
time-domain electromagnetic method ,
using ore and underground water’s conductivity and magnetoconductivity
difference as main substance base, then applies non-earthing loop or earthing
line source to send first pulse magnetic field to ground according to
electromagnetic induction theory;
Electromagnetic Method (TEM) is a
time-domain electromagnetic method ,
using ore and underground water’s conductivity and magnetoconductivity
difference as main substance base, then applies non-earthing loop or earthing
line source to send first pulse magnetic field to ground according to
electromagnetic induction theory;
2. Then in
the gap uses coil or earthing electrode to observe second eddy field, and also
study the space and time spread laws to search underground water and solve
other geological problems.
the gap uses coil or earthing electrode to observe second eddy field, and also
study the space and time spread laws to search underground water and solve
other geological problems.
3. And it is a new electromagnetic
prospecting method. But the promotion was limit due to factors like high price,
small transmission power, low efficiency, big transmission loop in deep
exploration and hard to work with big transmit loop in complex landform.
prospecting method. But the promotion was limit due to factors like high price,
small transmission power, low efficiency, big transmission loop in deep
exploration and hard to work with big transmit loop in complex landform.
4. Our RD
department develops portable exponential decay type transient electromagnetic
system with big currency supply. But capacitor pulse discharge will produce big
currency, it is its shortage, also the reason that transmit wave form is not
square, while attenuating wave with continuous attenuating and changing
amplitude, the spectrum composition is very complex; the turn-off phase
transition currency amplitude which is crucial to producing useful transient
second field signals is much less than that of turn-on rise phase transition
amplitude;
department develops portable exponential decay type transient electromagnetic
system with big currency supply. But capacitor pulse discharge will produce big
currency, it is its shortage, also the reason that transmit wave form is not
square, while attenuating wave with continuous attenuating and changing
amplitude, the spectrum composition is very complex; the turn-off phase
transition currency amplitude which is crucial to producing useful transient
second field signals is much less than that of turn-on rise phase transition
amplitude;
5. limited by capacitor storage energy,
the transmit wave pulse width is small, so the deep survey is hard to carry
out; It also can not send amplitude, continuous waves with same cycle and so
on, therefore it is also not an ideal method.
the transmit wave pulse width is small, so the deep survey is hard to carry
out; It also can not send amplitude, continuous waves with same cycle and so
on, therefore it is also not an ideal method.
Applications
1. water reconnaissance and environment
pollution monitoring etc.
1. water reconnaissance and environment
pollution monitoring etc.
2. Water
prospecting, engineering exploration,
prospecting, engineering exploration,
Technical Parameters:
Transmitter:
Frequency
range: power supply 1.25~125Hz(8 frequency points)
Transmitter:
Frequency
range: power supply 1.25~125Hz(8 frequency points)
Power supply: DC 4V~150V
Rated output power: 3KW
Max output voltage: 150V
Max output current: 50A (continual), 70A (pulse)
Output waveform: 2 types (type0 and type1)
Close time: changing according to the load-wire.
Min. off time: 1.2μs (only resistant load)
Synchronization model: wire synchronization
Dimensions: 360*250*250 mm
Weight: 9Kg
Rated output power: 3KW
Max output voltage: 150V
Max output current: 50A (continual), 70A (pulse)
Output waveform: 2 types (type0 and type1)
Close time: changing according to the load-wire.
Min. off time: 1.2μs (only resistant load)
Synchronization model: wire synchronization
Dimensions: 360*250*250 mm
Weight: 9Kg
Receiver:
Dimensions: 324*210*230 mm
Weight: 7Kg (batteries not included)
Sampling frequency: max. 5μs, optional.
Dynamic range: 156dB
Stacking fold 1 to 9999, optional
Belt-width: DC to 30 KHz
Synchronization model: wire synchronization
Dimensions: 324*210*230 mm
Weight: 7Kg (batteries not included)
Sampling frequency: max. 5μs, optional.
Dynamic range: 156dB
Stacking fold 1 to 9999, optional
Belt-width: DC to 30 KHz
Synchronization model: wire synchronization
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