DSP-13 User Manual
Page 12 of 16
DSP13_MAN_B
For existing driving surfaces made of pavers, a line of pavers can be removed to the desired sensor location. The
sensor should then be dug down a couple of inches below the pavers and placed in a bed of sand and covered
with at least an inch of sand. The lead-in cable should also have a small amount of sand cover over it to protect
it from the pavers.
For new construction sites, the conduit stub up is
the preferred installation method. This method is
the best installation method when a decorative
driving surface will be used and disturbing the
driving surface in the future is a concern in the
event that a sensor fails. A 1” Schedule 80 conduit
can be stubbed up at the desired detection point
in the driving surface. This conduit is then sleeved
with a 2” Schedule 80 conduit that is used to
protect the sensor. It is important that these
conduits be PVC and not metallic. The 1” conduit
can transition to metallic pipe after the elbow if
desired.
Once the sensor cable is pulled through the 1”
conduit, the sensor should be held 2” down from
the top of the 2” conduit sleeve while the 1”
conduit opening is sealed with plumber’s putty.
This is done to keep the sand used in the next
step, from filling the 1” conduit. Now that the 1”
conduit is sealed, fill the sleeve with sand (1” from
the top if a sealant will be used to cap the sleeve).
If the sensor cable needs to be spliced to another
cable to get to the detector, the splice should be
done in a junction box and the connections should
be soldered and weatherproofed.