ELECTRICAL EXPLORATION TRANSMITTER ASTRA-100
Electrical exploration transmitter ASTRA-100 is designed for producting an electromagnetic field during geophysical survey using the DC current, induced polarization, frequency sounding (including impedance one) methods, etc.
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Electrical exploration transmitter ASTRA-100 is designed for producting an electromagnetic field during geophysical survey using the DC current, induced polarization, frequency sounding (including impedance one) methods, etc.
Application: solving the civil tasks related to studies of the electrical properties of soils and in-situ rocks.
Specifications
| Maximum output power | 100 W |
| Maximum output voltage | 400 V |
| Output current and respective ranges of resistance RAB | 1.00 mA, 5.0 - 250 kOhms |
| 3.16 mA, 1.5 - 80 kOhms | |
| 10.0 mA, 0.5 - 25 kOhms | |
| 31.6 mA, 150 - 8000 Ohms | |
| 100 mA, 50 - 2500 Ohms | |
| 316 mA, 15 - 800 Ohms | |
| 1000 mA, 5 - 100 Ohms | |
| Output current form | 'Meander' (bipolar rectangular pulses w/o interval) |
| 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 |
| Performance | up to 80% |
| Acceleration time at active load | 2 sec |
| Operatig temperature runge | from -20°C up to +50°C |
| Power supply voltage | ≈ 12 V (min 9.5 V, max 15.5 V) |
| Weight (w/o battery) | 2 kg |
| Dimensions | 200 x 173 x 113 mm |
| Alphanumeric LCD | 4 lines x 16 symbols |
| Alphanumerical indication: | - operating frequency |
| - output current value | |
| - storage battery voltage | |
| - status (standby, operation, discontinity of power line (AB), low supply voltage) | |
| - load resistance | |
| - output voltage | |
| Sound indication | operation - discontinuity of power line (AB) |
| Sealed case | IP65 standard |