MULTIFUNCTIONAL ELECTRICAL EXPLORATION RECEIVER MERI-24

The receiver MERI is designed for measuring the parameters of the DC and AC voltages under the field conditions during electrical exploration surveis.

The receiver MERI is designed for measuring the parameters of the DC and AC voltages under the field conditions during electrical exploration surveis.

 

Survey methods

Resistivity method (measuring the amplitude of the signal fundamental harmonic) 

Frequency sounding-induced polarization method (ChZ-VP) (measuring the ampltudes of the signal harmonics along with differential phase parameters at the output of the electrical and magnetic transducers in a wide frequency range)

Natural electric field method (measuring constant electric fields)

EMKPK method (measuring power frequency and cathode protection fields for the purpose of mapping and studying the state of underground utilities)

 

The receiver is equipped with a LCD display and keyboard and is power supplied from built-in storage batteries or from an external power supply source.

During surveying, the receiver measures the input signal, processes it, displays the values of the defined parameters on the LCD and saves them in memory. Besides, the receiver ensures viewing the signal records made in the real-time mode on the display and storing them in memory.

The measurement resultes then may be transferred to a PC for analyzing with the use of special software.

Specifications

 ADC  24 bits
 Inherent noise level  1 μV, maximum
 Maximum input supply  2 V, maximum
 Input resistance  5 megaOhms
 Built-in nonvolatile memory  8 Mb
 PC synchronization interface  USB 1.1
 Maximum power consumption  2 W
 Internal power supply source  6 V, 3 A·h
 External power supply source  12 V
 Minimum operating time from internal batteries  10 hours
 Operating frequencies, Hz:  
 First frequency range  0.019, 0.038, 0.076, 0.153, 0.305, 0.610, 1.221, 2.441, 4.883, 9.766, 19.53, 39.06, 78.13, 156.3, 312.5, 625.0
 Second frequency range  0.021, 0.032, 0.042, 0.063, 0.083, 0.125, 0.167, 0.250, 0.333, 0.500, 0.667, 1.000, 1.333, 2.000, 2.667, 4.000, 5.333, 8.000, 10.67, 16.00, 21.33, 32,00, 42.67, 64.00, 85.33, 128.0, 170.7, 256.0, 341.3, 512.0
 Additional frequency range  50, 60, 100, 120
 Operating temperature range  -20°C to +60°C
 Dimensions  190 x 150 x 80 mm
 Weight  1.5 kg

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