Electrical Exploration Transmitter Astra-100

Electrical exploration transmitter "ASTRA-100" is designed for producing 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.


astra-100电法仪发射器

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 kohms

                                                                100  mA,  50 – 2500 kohms

                                                                316  mA,  15 –  800 kohms

                                                                1000 mA,   5 –  100 kohms

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 msec

Operating temperature range                         from - 20 OC up to + 50 OC

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, discontinuity of

                                                                                    power line (AB), low supply voltage)
- load resistance
- output voltage

Sound indication                                             - operation - discontinuity of power line (AB)

Sealed case                                                IP-65 standard