DO NOT bury the probe within 6 to 10 feet of a buried power or telephone line.
DO NOT bury the probe within 6 to 10 feet of a buried invisible dog fence.
DO NOT bury the probe within 10 feet of a natural gas line.
DO NOT bury the probe within 20 feet of a power pole with a transformer attached to it.
DO NOT bury the probe within 100 feet of railroad traffic.
DO NOT bury the probe within 200 feet of sub-station type overhead power lines.
DO NOT mount the probe vertically when used for above-ground applications.
L
OCATION
OF
CT-6 P
ROBE
See Figure 2. The sensing range of a probe buried beside the driveway is 5 to 8 feet with a small
car going 5 MPH. Taking the width of the car and the sensing range, this system covers a 12 foot
wide driveway. Buried in the middle of the driveway, this system covers a 24 foot wide driveway (see
"Installing Sensor Probe and Cable," below).
The probe should be at least 35 feet back from a street on which cross traffic is going under 35
MPH and at least 50 feet back from a street on which cross traffic is going over 35 MPH. If the probe
is installed in the center of a 12 foot wide driveway, it can be 20 feet or 35 feet back from traffic
respectively. (This is made possible by adjusting the probe's sensitivity. See "Adjusting Probe
Sensitivity" on page 2.)
Stationary steel near the probe, but not over the probe, will not affect its operation. The probe can
be placed in a PVC pipe under the steel-reinforced grid of a concrete roadway without affecting its
operation.
Probes installed above ground should be mounted no higher than 2 feet above the road surface. If
probe is attached to a wall or post, it should be mounted parallel to the ground and with the
driveway. Rule of thumb: the vehicle must approach one end of the probe, not both at the same
time. If a car approaches both ends of the probe (i.e., it is installed across, and not parallel with,
approaching traffic) the signal will be cancelled.
In drive-up window applications, install the probe at least 15 to 20 feet before the window.
I
NSTALLING
CT-6 P
ROBE
AND
C
ABLE
See Figure 2. Typically, the probe is buried 6-10 inches below ground, beside, and parallel to, the
driveway. It is advisable to bury 6-10 feet of extra cable with the probe (coiled up) for future
maintenance or relocation.
When installing the probe in existing pavement, bore a 1.5 inch diameter hole vertically, 18 inches
deep. Slice the pavement from the bored hole to the driveway edge to accommodate the cable.
Install the probe and cable and seal with silicon.
4
Figure 2
