Electro-magnetic current meter for deep ocean
Product Number：JFE INFINITY-Deep
● 6000m depth rating
● Robust design (no moving mechanical parts)
● Operational in extremely clear water
● Low background noise suitable for weak flows
● Long-term deployment
● Robust design (no moving mechanical parts)
● Operational in extremely clear water
● Low background noise suitable for weak flows
● Long-term deployment
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.
Relative paper
Relative paper
- Ma Q., Wang F., Wang J., Lyu Y. (2019). Intensified Deep Ocean Variability Induced by Topographic Rossby Waves at the Pacific Yap‐Mariana Junction. Journal of Geophysical Research: Oceans, 124, 8360 – 8374. DOI: 10.1029/2019JC015490
| Parameter | Velocity | Direction | Temperature | Depth | Tilt |
| Range | 0 to ±100cm s-1 | 0 to 360° | -3 to 45ºC | 0 to 60MPa | 0 to ±30° |
| Resolution | 0.02cm s-1 | 0.01° | 0.001ºC | 0.002MPa | 0.01° |
| Accuracy | ±1cm s-1 or ±2% (0 to ±60cm s-1) | ±2° | ±0.02ºC (0 to 35ºC) |
±0.3%FS | ±1° |
