Re: Gas Pilot Sensor

["FIRETEK" <firetech(change-the-ch-to-k)@telus.net>]

That solution won't work.  When the pilot lights the main gas jets, you're
liable to melt any "thermal switch" in the vicinity.  Anyone thought of
using a flame detector?  It will be "in alarm" for the whole time the
pilot's lit, so you'll have to wire your outputs a little differently from
the "normal" to achieve an "alarm" when the pilot "snuffs".  On the other
hand, you could use a combination of sensors to achieve the same purpose.  A
temperature sensor that will "alarm" when the room temp falls below a
certain point (which will happen if the pilot "snuffs") and a natural gas
sensor which will alarm in the event the thermocouple fails to shut down the
gas to the pilot light.  Granted, this won't provide an "instant" alarm as a
flame detector will, but it wil provide sufficient warning to the homeowner
before there's a risk of freezing.


"Frank Winans" <fwinans@xxxxxxxxxxxxx> wrote in message
news:1eQph.62150$wP1.19159@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> "Frank Olson" wrote
> > Frank Winans wrote <snip>
> > > "R-Guy" wrote
> > >
> > >>I would like to monitor the pilot in my gas-fueled boiler system
> > >>at home so that I can raise an alarm when it gets blown-out
> > >>by the wind.  Is there a special thermocouple-type-device for
> > >>this type of application?
> > >>
>
> >
> > We call that "bassifying" a solution.  It'll involve about fifteen
> > relays and a Napco LCD keypad programmed to read
> > "Attention Burglar. Go ahead, make my day."
>
> If you've got external power available for this project,
> there's no real reason to prefer a thermocouple anyway;
> just mount some metal in the pilot frame, and attach a
> thermal switch on that metal, far enough back from the
> flame that you don't burn up said switch.
> Problem;  does it false-trigger when the room is too cold?
>
>