RE: [OT] Pressure alarm sensor

["Tim" <timsyahoo@xxxxxxxxxxxxxx>]

I would've thought that this would be standard fare for alarm
companies used
to dealing with jewelers, museums, etc. and for his insurance to be worth
anything I would expect them (insurance co.) to require a
"proper" solution
rather than a "UKHA-special" :-)

That said, something similar to a regular pressure mat, but filled with
liquid and connected to a pressure sensor would probably do it. The item on
the mat exerts a downwards force which is converted into pressure by the
liquid in the mat (i.e. a capillary) and registered by the pressure
transducer. Any movement of the object changes the measured pressure and
triggers the alarm.

HTH,

Tim.


> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> darren_karp2001
> Sent: 11 May 2009 20:49
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] [OT] Pressure alarm sensor
>
> Hi all,
>
> I have a friend of mine opening up a jewellery business and wants to
find
> out if there is a sensor that can detect if something light has been
> removed from a display board to set off the alarm.
>
> I have suggested he speaks with his alarm company but thought, as he
is
> technically minded, that someone on this board may be able to offer
some
> assistance.
>
> TIA
> Darren



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