11
SENSORS
The sensor, sometimes called a slider, is a key component of the
friction measurement system and must be maintained properly to
provide reliable test results.
Sensors must be kept clean, properly conditioned, and free of
damage. Flat spots and deep scratches in the lining material
must be avoided. A sensor reconditioning (sanding) tool is
available from Regan Scientific Instruments. This tool helps
maintain the radius of the sensor while removing scratches and
surface contamination.
NOTE:
Before using new sensors, they
must be sanded and checked until the reference surface target
value is reached. See Sensor Checking Procedure below.
Leather sensor material should always be kept dry, as moisture
may cause the leather to swell and become ruined.
Sensors can be relined with new material by Regan Scientific
Instruments for a nominal fee if ruined or when worn to less
than 2mm in thickness.
STANDARD SENSOR TYPES AND COLORS
LEATHER
– RED COLORED BODY
SBR RUBBER
– BLACK COLORED BODY
NEOLITE
– YELLOW OR GOLD COLORED BODY
CUSTOM
– BLUE OR GRAY COLORED BODY*
*Custom sensors can be fabricated by Regan Scientific Instruments for a
nominal fee. The material provided must be at least 28mm X 28mm in size
and between 2mm and 5mm in thickness.
SENSOR SANDING PROCEDURE
1. Use fresh sandpaper with each new test location. Thoroughly
brush the sandpaper to remove any loose sand particles from
the paper.
2. Insert the sensor and sand until any noticeable wear pattern
or flat spot has been removed.
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