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Hydro-geophysical Instruments

Hydro-geophysical Instruments

Hydro-geophysical Instruments are intrinsic safety designed for water-bearing/intruding structure detection in the gas or coal dust explosive dangerous environment of underground coal mine.

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Product Details

TEM1.jpg
YCS2000A Transient electromagnetic instrument (TEM) for coal mines

Main application.

This TEM is an intrinsic safety instrument designed for water-bearing/intruding structure detection in the gas or coal dust explosive dangerous environment of underground coal mine. This instrument adopts advanced IC technology, featuring leading anti-interference capability and measurement accuracy.

Main features.

The receiving device is dedicated magnetic probe, huge equivalent area of probe, little metal body affection, high resolution, large emission current, and the maximum detection distance can reach to 150 meters whit a blind zone smaller than 10 meters, multiple data stacking makes strong anti-interference capability. The software can provide easy operation, graphical user interface and automation processing.

Technical index.

Equivalent area of probe

450m2or 1800m2

Dynamic range

180dB

Data Stacking

Up to 10000 times

Amplification factor

1101001000 times

Sampling rate

2MSPS1MSPS0.5MSPS0.25MSPS

0.125MSPS0.0625MSPS

Transmitting voltage

6.5V

Transmitting current

4.5A

Channel Number

2000 channels

Transmitting frequency

2.5Hz6.25Hz12.5Hz25Hz

Turn-off time

0.5μs

Continuous operation time

8hours

High resolution electric resistance detector.jpg

YD32(A) High resolution electric resistance detector

Main application.

Detection of water-bearing/intruding structures within 100 meters ahead of the head of roadheader

Detection of water-enriched zones within 100 meters ahead of the head of roadheader

Detection of aquiclude thickness and intrusion height in the roadway floor

Detection of water-bearing/intrusions of the roadway wall

Test of grouting effect

Main features.

The YD32(A) is the leading instrument in China for supplying high-power electricity in underground coal mines through excitation of a stable whole-space electric field in mine roadways to identify the apparent resistivity variation.

The device features an intrinsic safety explosion-proof design for coal mines and its small size makes it convenient to carry. This device is a performance leader in terms of long distance detection, on-site graphing and self-testing of ground resistance amongst similar products

The application software has functions of fine data processing, automatic graphing and result data management. Through simple processing, a clear display and an easy to interpret profile of apparent resistivity can be automatically generated.

Technical index.

Transmitting channels

4(2 independent synchronized   transmission circuit per channel)

Transmitting voltage

100V

Max transmitting current

100mA

Receiving channels

32

Precision of receiving voltage

0.02%100mV

Receiving voltage range

±2V

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