Re: Looking for Temp and humidity sensors

["Robert Green" <ROBERT_GREEN1963@xxxxxxxxx>]

"Marc F Hult" <MFHult@xxxxxxxxxxxxxxxxxxxxx> wrote in

<stuff snipped>
> Some very accurate temperature sensors (a silicon diode for example) cost
> 1/1000th of what I'd speculate that a  HAI temperature module costs  And
> calibrated thermistors, Dallas 1-wire devices, and LM34/35's cost on the
> order of US$1 and so enjoy about a 40-fold cost advantage compared  to HAI
> (and Adicon and ELk and Aprilaire ) temperature _modules_.

Why *IS* that?  I was dismayed by the price and the restricted function of
the ADI "Bobcat" line of temperature and humidity sensors.  I see that
Worthington has some very cheap sensors listed with their ADI, HAI and ELK
offerings.  I would ideally line to monitor temperature and humidity info
for perhaps 20 different points in the house, with a wide array of
temperatures, too (chimney temps, hot water heater, fridge, etc).

Monitoring temperature and humidity (as well as minute barometric pressure
differences between rooms) from a lot of different locations *easily and
cheaply* would be a very good way of making sure that everything in the
house was functioning normally.  With Bobcats, that will run me about $2500.
:-(  We'll see how well Jeff Volp's analog I/O -solution works for me when I
get around to ordering the equipment.  That depends on how well I predicted
Christmas and travel related expenses.

--
Bobby G.