ASTRA 100AT

Astra 100AT is a modern, portable electric current transmitter with the maximum output power of 100 W, ouput voltage of 700 V and output current of 1000 mA. It is intended for being used in the frequency-domain resistivity & IP exploration of relatively deep (up to ~200 m) targets, and is controlled either manually or from any Android-operated smartphone or tablet via the Wi-Fi wireless connection. The output signal is the 100% duty cycle (for frequency-domain measurements) or 50% duty cycle (for time-domain measurements) squarewave current with the fundamental frequency values from ~0.08 Hz to ~2 kHz.

Astra 100AT is powered by an external 12V DC battery.

Max. output power ;100 W Max. output voltage;700 V Output current values with the corresponding acceptable range of the transmitting line contact resistance ;1.0 mА : 15.0 kOhm ÷ 700 kOhm 2.0 mА : 7.5 kOhm ÷ 350 kOhm 5.0 mА : 3.0 kOhm ÷ 140 kOhm 10.0 mА : 1.5 kOhm ÷ 70 kOhm 14.1 mА : 1.0 kOhm ÷ 47 kOhm 20.0 mА : 750 Ohm ÷ 35 kOhm 31.6 mА : 430 Ohm ÷ 20 kOhm 50.0 mА : 300 Ohm ÷ 14 kOhm 70.7 mА : 200 Ohm ÷ 9.3 kOhm 100 mА : 150 Ohm ÷ 7.0 kOhm 141 mА : 57 Ohm ÷ 2.8 kOhm 200 mА : 40 Ohm ÷ 2.0 kOhm 316 mА : 20 Ohm ÷ 1.0 kOhm 500 mА : 8 Ohm ÷ 400 Ohm 707 mА : 4 Ohm ÷ 200 Ohm 1000 mА : 2 Ohm ÷ 100 Ohm Ouput current waveform; 100% duty cycle squarewave signal, 50% duty cycle squarewave signal, sequence of squarewave signals with different frequencies Operating frequencies:;Four sets of 16 frequencies: Set 1: 0.076-2500 Hz Set 2: 0.0625-2048 Hz Set 3: 0.08333-2730 Hz Set 4: 0.061-2000 Hz Efficiency factor;Up to 85% Absolute error of the average output current value at 0.3 Hz, moderate load (<30%), normal power supply voltage (12,6/14,8 V) and room temperature;less than 0,25% Additional inaccuracy of the average output current value at 0.3 Hz due to increased load (<85%) for different current values;14.1 mА - 1000 mА – less than 0,1% 1 mА - 10 mА – less than 0,2% Additional inaccuracy of the average output current value due to the temperature deviation within the accepted temperature range;less than ±0,5% Frequency instability, including frequency drift within the operating temperature range and aging of the equipment during the first exploitation year;< 5⋅10-6 Wavefront duration on active load 1 кOhm;< 2 microseconds Operating temperature range;from - 20°C to + 50°C, without condensation Type of duty;continuous, fieldwork, without direct impact of atmospheric precipitation Power supply voltage;12,6 V (Pb batteries) 14,8 V (Li-ion batteries) min 10.5 V, max 17 V Current consumption;< 12 А Weight;~ 1.1 kg Dimensions;170х140х55 mm Controlled by;Keypad and display, or Astra-100AT software installed on any smartphone or tablet based on OS Android 9.0 or newer Connection interface;WiFi Sound indication;- transmission in progress (optional) - transmitting circuit break - overload (~100%) - underload (< 2%) - low supply voltage - overheat Connectors;- transmitting line AB - 10 ± 0,01 Ohm resistor - power supply Ingress protection rating;IP-65

We have created a special website for Astra family transmitters where you can learn more about them and compare with each other.

Astra-Transmitter.com