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Re: Freezer Alarm


  • To: ukha_d@xxxxxxx
  • Subject: Re: Freezer Alarm
  • From: "andy_powell_is" <ukha@xxxxxxx>
  • Date: Tue, 21 May 2002 09:34:53 -0000
  • Mailing-list: list ukha_d@xxxxxxx; contact ukha_d-owner@xxxxxxx
  • Reply-to: ukha_d@xxxxxxx


What about a door contact closure stuck on the door, (normally Open) -
you know the kind of thing, those magnetic ones used on alarm
systems, this could be wired back to Homevision (if you have one)
whcih could handle the logic..

Crappy drawing below (side view of freezer door)

    YYYYY XXXXX      YYYYY =  NC/NO contact (to Homevision)
    ----+ +----+     XXXXX =  'other bit' stuck on the door
      F D 
      R O 
      E O 
      Z R 
    ----+ +----+


Andy


--- In ukha_d@y..., "Don McAllister" <donmc@b...> wrote:
> Ken, It's freestanding and located in our utility room so any old
kludge
> will do. The utility room is next to the kitchen so any audible
alarm
> would suffice. Thought if it could trigger after two minutes of the
door
> being left ajar that would probably do it. I wouldn't want to get so
> sophisticated as measuring the temp.
>
> Cheers
> Don
>
> > -----Original Message-----
> > From: Kenneth Watt [mailto:kennwatt@b...]
> > Sent: 21 May 2002 09:36
> > To: ukha_d@xxxxxxx > > Subject: RE: [ukha_d] Freezer Alarm
> >
> > Don is it integrated or freestanding?
> >
> > BTW, if the alarm light comes on then the temp has already, on
most
> > machines, risen to above -15C and the food has already started to
> > perish!!
> >
> > -18C is the optimum temp for food storage and most machines cycle
> > between -15C and -21C to give an average -18C so, basically if you
> > notice that the food is soft it's out with the big frying pan! ;-)
> >
> > K.
> >
> > > -----Original Message-----
> > > From: Don McAllister [mailto:donmc@b...]
> > > Sent: 21 May 2002 09:11
> > > To: ukha_d@xxxxxxx > > > Subject: RE: [ukha_d] Freezer Alarm
> > >
> > > I was thinking more of some sort of contact switch and audible
alarm
> > > with a setting to go off if the contact is broken for more than
a
> set
> > > time. Looking for something self contained and simple.
> > >
> > > Don
> > >
> > > > -----Original Message-----
> > > > From: Mark McCall [mailto:mark@a...]
> > > > Sent: 21 May 2002 08:59
> > > > To: ukha_d@xxxxxxx > > > > Subject: Re: [ukha_d] Freezer Alarm
> > > >
> > > > > SWMBO has requested a Freezer Alarm due to me leaving the
> freezer
> > > door
> > > > > ajar for the 3rd time :-)
> > > > >
> > > > > Any pre-built solutions available or any suggestions
> appreciated.
> > > >
> > > > Does it have a light?  Could you monitor that and alarm if
it's on
> > for
> > > > more
> > > > than say 30secs.
> > > >
> > > > M.
> > > >
> > > >
> > > >
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