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Logger version 2-D electro-magnetic current meter for deep ocean INFINITY-Deep AEMD-USB

INFINITY-Deep is an autonomously deployable data logger for current speed measurements in the deep oceans. The currents in the deep oceans are very weak. It is too hard to accurately measure the deep water currents by some ADVs (Acoustic Doppler Velocimeters) that detect the Doppler-effect by scatter with the suspended particles in the water, because the concentration is very low. INFINITY-Deep measures 2-D current data through a magnetic field according to Faraday's law. Therefore, even if the suspended particles do not exist around the sensor, it can provide the accurate current data. The depth rating is 6,000m. Compared to INFINITY-EM, the instrument has a depth and a tilt sensors to monitor mooring status. Also, the battery capacity doubles for long-term current velocity measurements.

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Sensor Specifications

Parameter Velocity Direction Temperature Depth Tilt
Principle 2-D electromagnetic velocity sensor Hole element Thermistor Semiconductor sensor 2-D type
Range 0 to ±100cm s-1 0 to 360° -3 to 45℃ 0 to 60MPa 0 to ±30°
Resolution 0.02cm s-1 0.01° 0.001℃ 0.002MPa 0.01°
Accuracy ±1cm s-1 or ±2%
(0 to ±60cm s-1)
±2° ±0.02℃
(0 to 35℃)
±0.3%FS ±1°

Logger Specifications

Memory medium miniSD card *waterproof & high speed type
Data capacity 1GB provided as standard
AD converter 16 bit digital conversion
Measuring mode Continuous mode, Burst mode
Measuring interval 0.1 to 600 s
Burst sampling interval 1 to 1,440 min
No. of samples 1 to 18,000
Battery CR-V3 lithium / 3.3Ah (four maximum)
Communication USB 2.0 ( Ver. 1.1 compatible)
Current consumption 100mA
Housing material Ti-6Al-4V
Dimensions Φ85mm×419mm (protection guard not included)
Weight Approx. 4.1kg in air, Approx. 2.4kg in water
Depth rating 6,000m depth equivalent

*Under development. Specifications are subject to change without notice.



*All the specifications are subject to change without notice. Please contact us for more information.

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