Re: A scope for installing PIR?

[Crash Gordon® <NONE@xxxxxxxx>]

I think, if I remember correctly, Sentrol used to sell this giant clip =
on mirror you were supposed to clip on the detector body while mounted =
and you could "see" the coverage area. Good idea, but totally =
impractical---since your head was usually in the way of the mirror...I =
think I used it twice.



"Robert L. Bass" <robertlbass@xxxxxxxxxxx> wrote in message =
news:NsCdnUBw99d4Vv7fRVn-iw@xxxxxxxxxxxxxx
> > I need some help from you pros. I'm staring at
> > an assessment question that says something
> > like this: "when installing a motion sensor in
> > an odd-shaped room, scope the perimeter and
> > eliminate obstructions."
> >
> > I'm assuming there is a device that I would look
> > through that gives me some idea of what the
> > PIR would see...
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> Not really.  Just use your eye.  Stand where the PIR will be mounted =
and=20
> look for obstructions.  Each PIR model has its own unique pattern of =
"fields=20
> of view" (FOV's).  After using a few you will become accustomed to =
their=20
> characteristics.  For now, check the coverage pattern in the =
installation=20
> instructions as a guide.
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> Remember to verify that the detector is installed at the correct =
height as=20
> specified in the manual.  If it's too high you may miss nearby areas.  =
If=20
> it's too low the area of coverage will be reduced.  Also, if you are =
using=20
> "pet resistant" detectors, note that most of these require very =
careful=20
> placement to avoid false alarms.
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> When designing a system note that it's usually unnecessary to cover =
every=20
> square foot of the protected premises.  Protect the places where a =
thief is=20
> likely to move about, especially corridors, access to stairs (not =
usually=20
> the stairs themselves though) and important target locations like the =
master=20
> bedroom and family room if it's a residence.
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> --=20
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> Regards,
> Robert L Bass
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> =
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> Bass Home Electronics
> 2291 Pine View Circle
> Sarasota =B7 Florida =B7 34231
> 877-722-8900 Sales & Tech Support
> http://www.bassburglaralarms.com
> =
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