PNI Sensor
DOC# : PlacePod Installation Guide R01_draft7
Page 8 of 14
5.4
PREPARE THE HOLE FOR THE PLACEPOD
After the core is removed, the hole needs to be cleaned out and leveled so the PlacePod
sensor can be placed at the right height.
1. Remove leftover debris to make a relatively flat surface.
2. Backfill with sand to a depth of 1 3/4 inches if necessary.
WARNING! Make sure that the hole is completely dry before proceeding. If the uncured epoxy
comes into contact with moisture, it will foam adversely affecting epoxy performance and
adhesion.
3. Add epoxy to level the surface to 1.5 inches depth from pavement surface Allow epoxy
to harden.
Figure 9: Bottom Layer of epoxy
5.5
INSERT THE PLACEPOD INTO THE HOLE
1. If mapping of the sensor location is being performed, record the sensor Serial Number.
2. Add a second layer of epoxy approx. 1/4 inch thick.
3. Insert the sensor into the hole so that it is seated onto the bottom of the hole, forcing the
uncured epoxy up around the sides of the lower housing.
4. The ideal placement is to have the top of the sensor sit 1/4 to 3/8 of an inch below the
surface of the asphalt.
Figure 10: Sit the PlacePod in the hole (ensure top of sensor is 0.25in from surface)
