ERP-1 DIGITAL ELECTRICAL EXPLORATION SYSTEM

Portable digital electrical exploration system ERP-1 is designed for geophysical survey performed by the DC and AC resistivity methods.

Portable digital electrical exploration system ERP-1 is designed for geophysical survey performed by the following methods

Electrical exploration by DC and AC resistivity method - vertical electric sounding (VES), electric profiling, signal generator, M3, as well as measuring of the full vector of an electric field: magnetomotive force, vector survey

Natural electric field (self-potential, measuring of stray current field) method

Induced polarization (IP) with INFAZ-VP version

 

Applications

geological mapping

cryopedology

search and exploration of mineral deposits

geoecology

archeology

geological engineering

applied geophysics

hydrogeology

The system ERP-1 provides a combination of analog and digital signal processing To ensure accumulation in the signal processing measuring unit there are synchronized filters furnished on switched capacitors.

 

Features

The system ERP-1 provides a complex of electrical exploration methods that extends the range of solvable problems and improves the quality and accuracy of obtained results

The system has high noise immunity (good quality of measuring unit narrow-band analoque filter is 18), that is required for urban development, sites near electricity transmission lines, railways, etc.

Survey result, including the number of profile, survey stake, span, measurement date and time, are stored in memory

The system ERP-1 is provided with software for data transfer from measuring unit to PC and storage of measurement results in formats compatible with software package IPI2WIN (VES and VES-IP data processing and interpretation, developed by Moscow State University)

'Digital' area of signal processing contains and additional method of hardware noise reduction

Transmitter ERP-1 is supplied with two outputs, a switch tumbler for operation with different supply lines (i.e., for double-differential profiling)

Receiver ERP-1 is supplied with two inputs, a switch tumbler for operation with different receiving lines (i.e., vertical electronic sounding with 'collars')

The system is developed using technical decisions aimed at cost minimization

ERP-1 is designed and developed as equipment with the state-of-art element base, available for a wide range of home consumers

 

Specifications

 Temperature Range  -20 to +50°C
 

 Receiver 

 Operation Frequencies  DC, 1.22, 2.44, 4.88 Hz
 Input Voltage Range:  
 DC>  100 mkV ± 5 V
 1.22, 2.44, 4.88 Hz  10 mkV ± 5 V
 Input Active Resistance  
 DC  at least 30 mOhms  
 1.22 Hz  at least 19 mOhms  
 2.44Hz  at least 14 mOhms
 4.88 Hz  at least 10 mOhms
 Interference Suppression  
 DC  at least 60 dB
 1.22, 2.44, 4.88 Hz  at least 80 dB
 Memory Capacity  7000 readings
 Interface  RS-232C
 Weight  2.8 kg
 Overall Dimensions  270 x 240 x 100mm
 

 Transmitter 

 Operation Frequencies  DC, 1.22, 2.44, 4.88 Hz
 Output Regulated Current  1, 2, 5, 10, 20, 100 mA
 External Power Supply  10 - 15 V
 Built-in Accumulator Unit  12 V,4 AH
 Maximum Output Power  30 BA (max.)
 Output Current Form  Meander
 Weight  4.3kg
 Overall Dimensions  270 x 240 x 100mm

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