Re: Remote temp sensing help??

Jenny3kids_at_msn.net
Date: 01/10/05 

Date: Sun, 09 Jan 2005 17:46:30 -0700

On Sun, 09 Jan 2005 16:07:40 -0600, John Fields
<jfields@austininstruments.com> wrote:

Thanks guys,

I am keeping the temp around the 50 deg F mark using lots of
insulation and a 7-1/2 W light bulb in the pump heads and small oil
filled heaters with thermostats set at 1-1/2 (1-10 scale) in the
insulated pump rooms. Not a cheap approach for the pump rooms but
can't figure out what else to do as there's pressure tank and pipes
and filters and softener and... <g>

I have already had one scare on the day after Christmas morning just
past. I awoke to no water. Fortunately the bulb in the wellhead must
have died about an hour before I got up. The pipes had frozen (12 deg
F outside) and as the pump pushed it would jam a slug of ice in the
pipe, so no water. I stuck a fan heater in there for 3 hours and it
finally melted it and all still OK.

John Popefish, the problem with the X10 stuff apart from it being crap
(I have a bunch to sell if anyone is interested) I have two electric
meters. Power company's idea!! One for the distant pump setup and
another for the house and closer one. I don't think the X10 would span
the grid, would it?

John Fields, your solution sounds fine to me. I can toss a solder iron
around and can build from your schematic. I would very much appreciate
that. I am happy with red/green LED's. In fact I'll probably add a
piezo with the red LED. Someone might need to get down there in the
middle of the night. Bbbrbrrrrrrrr. <g>

Thel lowest I have seen the wellhead is 38 deg F, so I'd want it to
trigger the red LED at 40. That way if it does hit 38, I can scoot
down and make sure the bulb is still OK.

How involved would be setting up the transmitter and receiver
frequencies after building? I have a a'scope but no signal generator.
Could I buy a Tx/Rx set and just add your stuff? Say Vellerman/Ramsey
or something? As to "cheap" probably $100 or less. Not wishing to
whine, but single mom, couple of kids, so a walk around looking at
harbor freight temp meters needs a lot of justifying to spend more
than that.

Scott your solution does seem a little more than I have in mind, but
thanks for the suggestion.

The distance one isn't actually used anymore, (long story) but because
it is still a fully functional system, I don't want to just let it
kill itself in the cold. Just don't seem right to let it die. <g>

Thanks again for the quick reply. 

--
Kind regards,
  Jenny and her tribe of survivors.

Relevant Pages

  • Re: 88 Johnson 70 hp loss of power and miss
    ... line) is down and the outlet (engine hose) is up. ... Pump the bulb. ... Take the fuel pump apart and replace the diaphram...then ...
    (rec.boats)
  • Powered relief system -- I can hear you laughing from here....
    ... The pump is fitted with 1/8" NPT barbs so it was very easy to plumb ... the small end of the bulb. ... simply switch on the pump, ... I release the small vent hole, ...
    (rec.aviation.soaring)
  • Re: High pressure coolant/Thermal issues
    ... causing operators to chase dimensions all day, ... HP pump from within the program, you can try to reduce the use of the ... is giving off as much heat as is being generated. ... electronic indoor/outdoor thermometer to check the temp. ...
    (alt.machines.cnc)
  • Re: Beef Jerky Machine
    ... I have a simple design for the temperature control circuit ... bulb was picked, then, it would only work for that particular set up. ... the dehydrator and tweak again. ... air which maintains a relatively constant temp. ...
    (sci.electronics.basics)
  • Re: Engine trouble
    ... the chinzy-ass fuel pump: ... Tilt the engine down to its operating position. ... Pump the primer bulb until it gets so hard you can't pump it any more. ...
    (rec.boats)