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7
Install the Speed Sensor (Blue Sensor)
The SpeedSensor, which is the blue sensor provided, should be as close to the impeller as possible. You install the
SpeedSensor inside the hull (i.e. the opposite side from the impeller). The SpeedSensor can either be installed
perpendicu-
lar to the impeller when positioned directly above it
, or
parallel to the impeller when it is located one impeller length
in front or behind of the actual impeller.
Although inside the hull, the SpeedSensor still must be fixed securely to the
shell. Make sure you clean the surface well before taping it to the boat.
1) Clean the mounting location thoroughly with an alcohol prep pad.
2) Peel the liner from the VHB tape on the blue sensor.
3) The SpeedSensor can either be installed
perpendicular
to the impeller when positioned directly above it,
or parallel
to
the impeller when it is located one impeller length in front or behind of the actual impeller.
IF MOUNTING THE SENSOR PARALLEL TO THE IMPELLER, DO NOT ALIGN THE SENSOR DIRECTLY ON TOP OF THE IMPELLER.
4) If desired, secure the wires using cable ties and mounts. If youhave extra wire, coil the wire and secure with a cable tie.
NOTE:
Multiple sensors can be mounted around one impeller, simply mount them next to each other, or stack them on top of
each other. (i.e. if you have a mounting harness in both seats of a double.)
CALIBRATION
Calibration is an optional step that allows the display unit to compensate for different impeller locations and variations in hull
shapes. If you need very accurate distance and speed measurements (to compare your performance with published results,
for instance), calibration is a good idea. However, even if your unit is not properly calibrated, your SpeedCoach will provide you
with valuable feedback on changes in boat speed, and you will be able to compare upstream and downstream pieces.
Your SpeedCoach has a factory calibration value of 1.000. To calibrate your system, you will be determining a new calibration
value by comparing your SpeedCoach's distance reading with a known distance reading. On still water, row or paddle over
your measured distance and record the distance displayed on your SpeedCoach. On flowing water, row or paddle over your
measured distance both up and down stream and average the results shown on your display. Then, use the following formula
to obtain your new calibration value.
(CURRENT CAL VALUE)(TRUE DISTANCE) = NEW CAL VALUE
DISPLAYED DISTANCE
For example, if you know you covered 1 mile, but your display shows 0.92, your calibration value will be:
(1.000)(1.00) = 1.086
0.92
PLEASE NOTE: Calibration is boat and impeller location-specific: if you move your unit to a new boat, or modify the location of
your impeller, it is recommended that you recalibrate the unit.
TROUBLESHOOTING
Please refer to our product specific trouble shooting guides.
These can be downloaded from www.nkrowing.com.au
