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3. CALCULATING "SPEED CAL"
1)1)
1)1)
1) Place a chalk mark or tape onto the vehicle tire that the Speed Sensor mounted
to it as shown below.
2)2)
2)2)
2) Mark the initial spot on the ground.
3)3)
3)3)
3) Drive vehicle straight ahead counting 10 full revolutions of the wheel. The mark
must stop at the same position it was in when the vehicle started.
4)4)
4)4)
4) Measure the distance from the ground starting mark to stopping mark in inches [dm]
(Round off fractions).
5)5)
5)5)
5) Write down this distance as the SPEED CAL number; keep it for future reference
when programming the Console.
NOTE:NOTE:
NOTE:NOTE:
NOTE: This measurement is critical to the performance of the Console.
MEASURE MEASURE
MEASURE MEASURE
MEASURE
CAREFULLYCAREFULLY
CAREFULLYCAREFULLY
CAREFULLY. Be sure tire is properly inflated before measuring. Measure
tire in type of soil in which you will be spraying. Circumference of
tire will vary when measured in soft soil versus hard packed soil. For
best results, measure several times and average the results.
6)6)
6)6)
6) It may be necessary to modify your SPEED CAL number based on the amount of magnets
you are using. The SCS 330 software assumes that 2 magnets are mounted on the
wheel. If more than 2 magnets are used, the following calculation must be made.
EXAMPLE:EXAMPLE:
EXAMPLE:EXAMPLE:
EXAMPLE:
Assumed # of magnets = 2
Actual # of magnets = 6
Current SPEED CAL = 612 [155]
Corrected SPEED CAL = Assumed # of magnets x current SPEED CAL
Actual # of magnets
ENGLISH UNITS:ENGLISH UNITS:
ENGLISH UNITS:ENGLISH UNITS:
ENGLISH UNITS:
METRIC UNITS:METRIC UNITS:
METRIC UNITS:METRIC UNITS:
METRIC UNITS:
= 2 x 612 = 204 = 2 x [155] = [51.6]
6 6
Corrected SPEED CAL is 204 [52]
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