18
Magnets
Please read the following information about magnet spacing
and polarity.
The number of magnets that must be used depends on
the size of your tire and where you mount the sensor. On
tractor or implement wheels the general rule of thumb is one
magnet for each wheel bolt (minimum of two, and always an
even number). For drive shafts or small wheels (ATV’s), two
magnets are usually adequate.
Some installations may require that more than two magnets
be installed. To determine the number of magnets required,
measure the distance traveled of one revolution of the
sensor equipped wheel in inches (centimeters).
See the following tables to find the minimum number of
magnets required (always an even number)
Installation
(cont)
Speed Sensor Installation
Installation Note: The console provides one connection point
for the speed sensor. A 15 ft. extension cable is provided.
For speed sensor installations on implements, add 3-pin
extension cables as required.
Please Note: If you have purchased an Astro II GPS speed
sensor, Vansco radar or other radar or GPS speed sensor,
disregard the following section on magnetic speed sensors
and install the speed sensor as described in the instructions
included with the unit. You may need an adapter cable to
connect to radar or GPS Speed Sensor, see Appendix H.
Locations where the sensor may be installed:
1. Non-driven wheel on tractor, vehicle or implement. This is
less susceptible to errors resulting from wheel slip.
Locate the following parts:
•
Speed sensor cable (Green body)
•
Mounting “L” bracket
•
Magnets
•
Cable ties
2. Tractor, vehicle or planter drive shaft. This type of
mounting is recommended for trucks, four-wheel drive
tractors or other equipment that has poor or no access to
a non-driven wheel.
See Appendix A for magnetic speed
sensor installation details for various types of wheels or
drive shaft.
The magnets provided by Micro-Trak are marked with a
punched dashed line on the SOUTH pole side of the magnet.
See Illustration below.
Always use an even number of magnets, and always alternate
the polarities of the magnets as you go around the wheel
hub or drive shaft.
To install, mount the first magnet with the SOUTH pole side
(dashed line) facing toward the hub or shaft. Mount the
second magnet with the NORTH pole side facing toward the
hub or shaft.
See Illustration below.
For proper operation, the magnets must be evenly spaced
around the wheel or drive shaft. The magnets must be at
least 1” apart.
See Illustration below.
NOTE: Magnets may be attached mechanically or adhered
with epoxy or other high quality adhesive. When using
adhesive, thoroughly clean the area of dirt and oil.
English or Turf (inches)
Wheel Circumference
40
80 120 160 200
Number of Magnets
2
4
6
8
10
Metric (cm)
Wheel Circumference
100 200 300 400 500
Number of Magnets
2
4
6
8
10
S
N
North
North
North
South
South
South
1
2
4
3
5
6
Test magnet
should alternately
attract and repel.
1” Minimum
Содержание DUAL CONTROL MT-3405D
Страница 1: ...REFERENCE MANUAL DUAL CONTROL AUTOMATIC RATE CONTROLLER MT 3405D ...
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Страница 56: ...P N 14366 56 Appendix F cont MT 3405D NH3 Specific cont MT 3405D Wiring Diagram for NH3 Channel 1 ...
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