8-CHANNEL RECEIVER IMVP FOR INDUCED POLARIZATION METHOD

Multi-channel electrical exploration receiver IMVP is designed for carrying out works by the induced polarization (VP) method in the frequency and/or time domain.

Multi-channel electrical exploration receiver IMVP is designed for carrying out works by the induced polarization (VP) method in the frequency and/or time domain. It may also be used when carrying out works with the of the constant current (resistances), frequency sounding (ChZ) method, and a differentially normalized method of electrical exploration (DNME).

 

Features

The reciever simultaneously records a signal with 8 MN receiver circuits, where the M electrode for one receiver circuit may serve as N electrode of the next one

All wires may be united in one 8-channel bunch or two bunches, 4 channel in each

The receiver always operates jointly with a PC (notebook computer): the PC is used to control the receiver and record the signal

Communication with the PC is performed via the USB interface

 

Advantages

IMVP provides for increasing labor productivity, reducing work costs and increasing the information content of the induced polarization method

This is state-of the-art, portable, free-running, multi-channel and high-precision equipment

The increase of the method information content is achieved due to response registration both in the frequency domain (INFAZ-VP method) in a wide frequency range and in the time domain.

High precision of registration (the receiver is equipped with 24-bit  ADC in each channel) and long-time continuous recording with a rather narrow sampling increment (2500 Hz) make it possible to use different algorithms for studying the time-and-frequency characteristics of the induced polarization process

The time-and-frequency relations of the induced polarization provide for distinguishing between different types of rocks and ofe minerals

Specifications

 Number of independent receiver channels  8
 ADC  24 bits
 Sensor type  electrical MN dipoles
 Input resistance  5 megaOhms, minimum
 Operating frequency range  from 0.001 to 200 Hz
 ADC readout repetition rate  2500 Hz
 Frequency setting accuracy  better then 10-5, frequency departure - 5·10-6, maximum
 Maximum input signal supply of each channel  ± 2.5 V
 Inherent noise level  2 μV, maximum
 PC communication interface  USB 1.1
 External power supply of the recorder  12.6 V ± 2 V
 Operating temperature range  from -10°C to +50°C , w/o condensation
 Weight of recorder  1.2 kg
 Dimensions  200 x 100 x 25 mm
 Dust- and moistureproof enclosure  IP65

 

The delivery set includes the software for data processing (calculation of apparent resistance and apparent polarizability via a different phase parameter).

For operation of the receiver, a portable PC is required. We recomend that you use a specialized field PANASONIC notebook PC, series CF-19 of CF-29 (30).

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