Nautique SPORT NAUTIQUE 216 - Manual (Page 86)

4-17
Speedometer Function
The speedometer measures the water pressure in the pitot tubes
when power is first turned on. This measurement is subtracted
from later readings to correct for the pressure caused by the weight
of water over the pitot pick-up.
For maximum accuracy, the boat should not be moving when the
key is turned on, especially in a re-start condition. If the boat is
moving, the pressure in the pitot will be greater than normal,
resulting in the speedometer reading low.
The system is designed to operate with two pitot pick-ups for speed
sensing. The speed displayed is based on the pitot with the highest
pressure. On the speedometer LCD display, the active pitot sensor
will be identified with a “P” or “S.” It is normal to see the display
switch between the port and starboard pitot sensors, especially in
high-speed turns.
Both pitot sensors are continuously monitored, and blockage in
either sensor will be detected. If a sensor becomes blocked, the
system will switch to the clear pitot sensor. An “XX” will flash in
place of the “P” or “S” on the speedometer LCD to indicate which
sensor is blocked. Clean the pitot sensor to restore normal
operation.
Port Sensor - Starboard Blocked
Starboard Sensor - Port Blocked
CORC115
Controls and Indicators
Sport
Nautique Sport Sec 4.qxd 11/19/04 4:02 PM Page 17