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 |
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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) |
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