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ERA-MAX ELECTRICAL EXPLORATION SYSTEM

ERA-MAX equipment is designed for electrical prospecting on any surface.

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ERA-MAX equipment is designed for electrical prospecting on any surface

 

Features

•Low-frequency electromagnetic method for measuring resistivity

•Operating frequencies: DC, 1.22, 2.44, 4.88, 9.76, 19.52 and 625, 1250, 2500 Hz

•Electrical field can be measured by pairs of active electrodes capacitively coupled to the earth, or by the telescopic antenna in air

 

Applications

•Civil-engineering survey for construction and inspection of active pipelines, roads, hydraulic facilities

•Search and exploration for ore and nonmetallic minerals

•Ecology, archeology

•Inspection of house footing and urban underground utilities

 

Survey methods

•Electrical exploration - resistivity method (vertical electrical sounding profiling)

•Charge method

•Self-potential method

•Inductive methods

•Geomagnetics - vector measuring of the earth magnetic field

•Noncontact probing of protective currents in pipelines

 

Specifications

 Climatic Performance  IP65
 Temperature Range  -30 to +65°C
 

 Receiver 
 Operation Frequencies  DC, 0.61, 1.22, 2.44, 4.88, 50, 100, 625, 1250, 2500 Hz
 Input Voltage Range,  
 DC  10 mkV ± 4 V (at Rinp 10 mOhms)
   100 mkV ± 4 V (at Rinp 100 mOhms)
 0.61, 1.22, 2.44, 4.88, 50, 100, 625, 1250, 2500 Hz  0.1 mkV - 2.8 V
 Input Active Resistance  100 mOhms (DC)
   100 mOhms (AC)
 Input Capacitance  15 pF (max) (AC)
 Pass band (specified by operator)  (2-3)% / (4-6)% (4.88, 50, 100 Hz)
   0.1% / 0.2% (625, 1250, 2500 Hz)
 Interference Suppression  100 dB (DC)
 (50-60 Hz and radio frequencies)  100 dB (0.61, 1.22, 2.44, 4.88, 625, 1250, 2500 Hz)
 Memory Capacity  5200 readings
 Extraneous DC Voltage Compensation  Automatic
 Interface  RS-232C
 Basic Reduced Measurement Error  1% (Input Voltage, DC)
   4% (Ratio of input voltage to generator output current;
   for 0.61, 1.22, 2.44, 4.88, 625, 1250, 2500 Hz)
 Supply Voltage  12 V, Built-in Accumulator Unit
 Consumption Current  30 mA (max.)
 Internal Power  Supply Accumulator Unit - 2000 mA AA (R6)
 Weight; Overall Dimensions  1.2 kg;     160 x 52 x 200 mm
 Connected Input Receivers  - Ground Receiver Electrodes
   - Active Electrodes
   - Air Electric Antenna
   - Trail Receiving Line
   - Magnetic Antenna - Ferroprobe
   - Induction Magnetic Antenna
 

 Transmitter 
 Output Regulated Current  1, 2, 5, 10, 20, 100, 200 mA
 Voltage  to 1000 V (DC)
 Operation Frequencies  0, 1.22, 2.44, 4.88, 625, 1250, 2500 Hz
 External Power Supply  12 - 24 V
 Built-in Accumulator Unit  2 AH, Panasonic
 Maximum Output Power  40 BA (max.)
 Weight; Overal Dimensions  2.3 kg (Including Internal Accumulator) 160 x 160 x 60 mm
 Output Current Form  Meander
 Output Generators  Ground Electrodes; Closed Loop; Trail Lines ("625Hz)
 Rotating Field Mode  Available (if two generators used)