RE: 1 Wire Mounting options

["Nigel Giddings" <nigel@xxxxxxxxxxxxxx>]

John,

What height do you intend to mount these in your rooms ?

I have run a long term comparison between a 1 wire temperature sensor at
about 1.5M and another directly above at about 2.4M. The room is not heated
at the moment, it is a basement room which will eventually have UFH. Both
probes read the same temperature with the door closed and no heat source,
this is somewhere between 8 and 10 degrees C. However if I vent my Node 0
into the room with air temperature between 20 and 25 degrees C then the
temperature of the probe at 1.5m is pretty stable but the probe mounted
higher is affected by the in rush of warmer air (at that height?).

This variation may be able to be compensated for in S/W although it is not
linear and does depend on air movement more than the absolute temperature.
The question really is which more closely reflects the feeling of comfort
perceived by a human...

I had hoped to place the sensors high in the room but I am concerned that
this will not manage the temperature where we, as humans, want it between 1
and 2 metres from the floor.

Nigel

-----Original Message-----
From: John Andrews [mailto:groups@xxxxxxx]
Sent: 16 January 2005 11:26
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] 1 Wire Mounting options


Chris

After years of laying discreet cables and everywhere looking a mess, I am
moving over to CAT5 - I plan to mount my 1-wire sensors in a cat5 plug and
then put a cat5 boot over them.

Thus it will look just like a cat 5 cable boot connected to the cat5 wall
plate (also means I can move them).


----- Original Message -----
From: "Christopher Purves" <CHRIS_PURVES@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Sunday, January 16, 2005 10:38 AM
Subject: [ukha_d] 1 Wire Mounting options


>
> Hi All,
>
> I'm looking for an attractive way of mounting 1 wire sensors in each
of my
> rooms.
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> Can anyone make any suggestions ?
>
> I thinking along these lines...
>
> http://www.smartkontrols.co.uk/design_guide/sensors.htm<http://www.smartkontrols.co.uk/design_guide/sensors.htm>
>
> Chris
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> Yahoo! Groups Links
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