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EML224.
The EML224 Compact system works using Kirchoffs right hand rule (based
upon Faradays law of generators) which states that a conductor (sea water)
moving through a magnetic eld (generated in sensor) will produce a current
orthogonal to both eld and movement. So movement of the vessel through
sea water with at least 5 ppt salinity will produce a current across the pins
orthogonal to the ships motion.
This minute current is measured and converted to a speed. This is formated into
proprietry NMEA VBW format and sent to the EML 224 Compact display which
applies an angular correction for both transversal and longitudinal speed, and
then a scaling factor is applied for the resultant speed.
Inside the EML224
smart sensor.
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