Download H3000 Instrument Handbook HB-3000

H3000 Instrument Handbook
System Requirements
N/A
Menu
Function name (default)
Function name (FFD)
WIND
True Wind Angle (TWA)
TRUE W/A
Units
Degrees
Alarms
Sector
Calibrations
True Wind Correction Tables
AutoCal TWA correction routine
Damping
0-99s
Dynamic Damping (Hercules only)
Update Rate
4Hz (Hercules), 2Hz (Hydra)
Analogue Displays available
True Wind Angle 360º
TRUE WIND SPEED
True Wind Speed (TWS) is the speed of the wind measured relative to the water
surface.
The system allows you to correct the TWS data for aerodynamic effects via the
TW Correction tables. (See ‘calibration’). When the boat is sailing downwind it is
normal for the airflow to be accelerated as it passes over the rig, the normal effect
of this is for the TWS to over-read by 10-15%.
The effect is reduced significantly by utilising a Vertical Masthead Unit which
positions the sensor further away from the accelerated airflow, thereby reducing the
error - however the effect is still present and should be corrected as required.
HB-3000-05
145