Re: Remote temp sensing help??

From: Fred Bloggs (nospam_at_nospam.com)
Date: 01/11/05 

Date: Tue, 11 Jan 2005 14:36:24 GMT

Jenny3kids@msn.net wrote:
> Hi people,
>
> I live on a small acreage and I have two wells and two pump rooms on
> the property. Winter temps frequently get below freezing so I have to
> keep a small heater in them to prevent pipes freezing overnight.
>
> Currently I use some cheap indoor/outdoor thermometers to monitor the
> temp inside the insulated enclosures but I have to walk to each one to
> check it.
>
> I need some temp senders so I can have a remote station in the house
> and each one can constantly indicate the inside temp so if the heater
> dies I can get down there and fix it. I can have a switch to cycle
> through them manually I do not need a 4-station setup but that would
> be a nice luxury, cost permitting.
>
> There is 110v in all places so batteries are not an issue. Can anyone
> suggest a CHEAP kit I can get? The farthest away sender would be about
> 800 feet.
>
> Thanks in advance.
>
>
> --
>
> Kind regards,
> Jenny and her tribe of survivors.

You should be using pipe heater tape and not a light bulb on that well
head. What is the layout of those pump houses- can you daisy chain a
path between them and back to the house? The simplest solution would be
to buy a 1000' spool of 4-wire direct burial telephone cable off the
surplus market for ~$50 - you can just string it out for now and wait
until spring to bury it. If burial is not feasible, then a UV resistant
type strung along a fence or whatever is another option. Then do a
4-20mA current loop transmission of the temperature.

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