Re: Ultrasonic Sensors

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

Or..non-lethal..but way more expensive to fix is a fiber optic bundle.


"Stanley Barthfarkle" <sbarth@xxxxxxxxx> wrote in message
news:992ag.6545$fb2.5543@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
|
| >> >> Since they will be used outdoors, what will the issues be?
| >
| >> The hardest part of installing outdoor photoelectric motion detectors
is
| >> running the wire.  Most of the time it's run below ground.  A tool
called
| > a
| >> "ditch witch" can cut an 18" deep by 2" wide trench for wire burial (be
| > sure
| >> to use cable that is rated for direct burial and check with your
building
| >> inspector for recommended depth of the trench to avoid damage due to
| > ground
| >> frost in winter).
| >
| > Not to mention underground telephone, cable lines, electric, sprinkler
| > systems, electric and anything else that might be in the way, when an
| > unexperienced person grabs ahold of a ditch witch. Can be a dangerous
tool
| > for the novice. Be Careful If You Choose To Use This Type Of Machinery.
| > Call
| > For Locates. There are companies that will do the locates for you. Then
if
| > you hit something they will be responsible.
|
|
|
| Unless you hit an a/c svc line with a walk-behind trencher.... if so, your
| widow will be responsible for finding out who was responsible for locating
| the services.  ;-)
|
|