micro-trak Calc-An-Acre II, Reference Manual

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12
45° max
Sensor
(green body)
Magnet
3/8” nuts
Bracket must
be rigidly
mounted
Sensor assembly must not
be mounted more than
45° from perpendicular
¼” to ½” air gap
S
S
Plastic Cable Tie
Shaft
NOTE: Magnets can be placed closer than 1” apart if a
magnet with opposite polarity is placed between them.
South South 1 2
1” minimum
Locate the following parts (in optional kit #01539):
•
P/N 13226 Shaft sensor cable (black body)
• P/N 13251 Magnets (and hardware)
• P/N 10045 2 Cable ties
• P/N 10013 Bracket
Mount magnet with SOUTH pole (dashed line) facing tip
of sensor. Some installations may require more than one
magnet per shaft. The magnets provided by Micro-Trak
are marked with a dashed line on the SOUTH pole side of
the magnet.
INSTALLATION: For proper operation, the magnets must
be evenly spaced around the shaft. The magnets must be
at least 1” apart.
NOTE: magnets may be attached with a cable tie or
adhered with epoxy or other high quality adhesive.
When using adhesive, thoroughly clean the area of
dirt and oil. Use of cable ties or other mechanical
attachment is recommended, however.
The shaft sensor is mounted directly over the magnet. For
the shaft sensor to operate properly, the spacing between
the magnets and the tip of the sensor must always remain
constant. Before permanently mounting any parts, be
sure that the location you have selected will meet the
mounting requirements. Note that magnets can be
closer than 1” apart only if another magnet with opposite
polarity is mounted between each of the south-faced
magnets. NOTE: Observe magnet polarities.
Installation
(cont)
Shaft RPM
(Requires Kit # 01539)
P/N 01539 RPM Sensor Kit
Includes items:
P/N 13226 5’ Run/Hold Sensor Cable
P/N 13251 Hardware Bag (incl. magnets)
P/N 10045 14” Nylon cable ties (5)
P/N 10013 Speed Sensor Mounting Bracket
South
North
Magnet Polarity
Magnet Layout
Mounting Detail