OEM Geophysical Exploration Instrument ERT Survey Resisitvity Tomography

Product Description
Resisitvity Tomography Geophysical Exploration Instrument ERT Survey





Main Functions



The resistivity tomography geophysical exploration instrument can solve the
underground geological problems by observing and studying the distribution law of
the artificially established underground stable current field. It has the
characteristics of intuitive, efficient, high resolution and high precision. The
electrical properties of underground media are studied by the changes of the
artificial stable current field established by ground observation, and the buried
depth, properties and shapes of underground obstacles are determined by analysis.



Electrode arrangement



Up to 18 types of devices are extensible. It can be scanned according to fixed
section (electrode arrangement is AMNB, ABMN, AMBN, AMN, MNB, A-Mn-B, self-charged
M, self-charged MN, charging M, charging MN) and continuous rolling scanning
measurement according to variable section (electrode arrangement is A-M, A-MN, AB-
M, AB) -MN, MN-B, A-MN rectangle, A-Mn-B, cross-hole dipole), among which,
continuous rolling scanning measurement can allow the measurement section to be
connected to any length under the condition that the total number of electrodes is
unchanged, which is convenient for long section tracking, enabling users to solve
practical problems at low cost and high time.



Technical specification



Receiving part






Voltage channel:



±6V
Measurement accuracy:



Vp≥10mV时,±0.5% ±1 character

Vp< 10mV时,±1% ±1 character

Input resistance:



> 50 MΩ
Apparent polarizability measurement accuracy:



±1% ±1character
Sp compensation range:



±1V .
Current channel:



5A
Measurement accuracy:



Ip≥ 10mA时,±0.5% ±1character

Ip< 10mA时,±1% ±1character

The suppression of 50Hz power frequency interference (common mode interference and
differential mode interference) is better than

80dB




Launch part




Maximum transmit power:



4500W
Maximum supply voltage:



±900V
Maximum supply current:



±5A
Power supply pulse width:



1~60 seconds, the duty ratio is 1:1



Other
Operating temperature:



-10°C~ +50°C, 95%RH
Storage temperature:



-20°C~ +60°C
Instrument power supply:



No. 1 battery (or nickel-cadmium battery of the same specification) 8 pieces



Current current:



≤55mA
Weight: ≤7KG
Volume:



310mm*210mm*210mm
WDZJ-3 multi-channel electrode converter




Converting the number of electrodes:



60 road



Insulation properties:



≥500 MΩ
Maximum working voltage:



450 VDC
Maximum operating current:



2.5 ADC
Instrument power supply:



No. 1 battery (or nickel-cadmium battery with the same specification) 8 pieces



Operating temperature:



-10°C~ +50°C

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