Installation (cont.)
Trak-Star Ultrasonic Speed Sensor
GENERAL MOUNTING INFORMATION
1. Trak-Star must be mounted parallel to the ground.
The ultrasonic horn is preset for the proper angle of
reflection.
2. The unit must be located so that the signal has an
unobstructed path to the ground.
3. Trak-Star may be mounted with the horn anywhere
between 20 (.5 m) and 40 (1m) inches above the
ground.. In soil that is smooth, dry or sandy, it is better
to stay between 20 (.5 m) and 30 (.75 m) inches.
4. Mount the Trak-Star at the high end of the range
when working grassy areas or fields with heavy residue,
(Materials such as dried plant stalks can damage the
transducer.)
5. The Trak-Star must not be mounted in an area where it
could be subject to chemical spray.
6. The Trak-Star will work equally well with the sensor horn
pointing forward or backward. Generally it will be easier
to obtain a clear path to the ground by mounting it on
the front of the vehicle pointing rearwards. Remember
to avoid chemicals and plant stalks.
7. If the Trak-Star is mounted under a vehicle, echo
interference may occur. If the monitor is slow to register
speed, if speed drops toward 0 or if speed continues
after stopped, echo interference is present. Try a
different mounting location.
8. Mount the Trak-Star away from engine radiators,
other sources of heat and direct sunlight. Extreme
temperature will affect measurement accuracy.
EXAMPLES OF BAD INSTALLATION
Possible Signal Interference
EXAMPLES OF Good INSTALLATION
No Signal Interference
DETERMINING REQUIRED CLEARANCE
When selecting a mounting location for the sensor, you must
first ensure that the path of the signal will not be obstructed
or fall on a row.
DIRECTION OF TRAVEL
A
B
D
C
E
A. Mounting Height 20” (.5 m) to 40” (1 m)
B. Equal to Mounting Height
C. 2 X Mounting Height
D. Length of signal on Ground (C - B)
E. Width of Signal Equals ½ Mounting Height
EXAMPLE
If your mounting height is 30” (.75 m), the
pattern of the signal on the ground would
be an oval 15” (.38 m) wide X 60” (1.5 m)
long.
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