| definition |
A family of self-contained Doppler current profilers designed for deployment on the
seabed, moorings, buoys or fixed structures. A range of transducers - 400 kHz (60-90m
range: 2-8m cell size), 600 kHz (30-40m range: 1-4m cell size), Z-cell 600 kHz, 1
MHz (12-20m range: 0.3-4m cell size), Z-cell 1MHz, 2 MHz (4-10m range:0.1-2m cell
size) and side-looking. Each transducer has 3 beams and the instrument has a maximum
of 128 cells. Current speeds up to 10 m/s may be measured at an accuracy of 1% of
measured value ±0.5cm/s. The standard depth rating is 300 m with 3000 m or 600m versions
available. Temperature (embedded thermistor with 0.1C accuracy and 0.01C resolution),
compass (magnetometer with 2 degrees accuracy and 0.1 degree resolution providing
tilt less than 20 degrees), tilt (liquid level with 0.2 degree accuracy and 0.1 degree
resolution) and pressure (piezo resistive with accuracy of 0.5% full scale - usually
100m - and resolution of 0.005% full scale) sensors are provided as standard.
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