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 |
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| 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) |