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For shallow water:
Temperature
Principle: Thermistor
Range: -3 to 45 °C
Resolution: 0.001 °C
Accuracy: ±0.05 °C (0 to 35 °C)
Conductivity
Principle: 7-electrode
Range: 0.5 to 70 mS cm^-1
Resolution: 0.001 mS cm^-1
Accuracy: ±0.05 mS cm^-1*(28 to 65 mS cm^-1)
Data logger
Memory medium: 1 GB miniSD card
Battery: CR-V3 3.3 Ah Lithium battery (maximum 2 batteries)
Operating voltage: －
Communication: USB 2.0 (ver 1.1 compatible)
Data transfer: －
A/D converter: 16 bit digital conversion
Sampling interval: 0.1 to 1.0 s (0.1s increment),1 to 600 s (1s increment)
Burst sampling interval: 1 to 1.440 min (1min increment)
Number of samples per burst: 1 to 18.000 samples
Power consumption: 90 mA
Dimensions: Ф 54 mm × 255 mm
Weight: Approx. 0.7 kg in air, 0.3 kg in water
Depth rating: 200 m (A7CT2-USB), 2.000 m (A7CT-USB)
Materials: Titanium (grade 2)
