Re: NANFA-- Old style heaters - usage?

D. Martin Moore (archimed_at_netdoor.com)
Thu, 29 Mar 2001 17:37:52 -0600

Hey, I still use these "old style" heaters. One of the two strips is
bimetallic and functions as a thermostat. When the bimetallic strip bends
far enough to contact the other strip (usually the one which is adjusted
with the screw) then the heater comes on. If you turn the screw way down,
then the heater will always stay on and cook your sardines. The light
indicates whether the heater is heating, and usually there is also a
capacitor to cut down on noise and stutters.

Prost,

Martin
Jackson, MS
----- Original Message -----
From: "Sajjad Lateef" <sajjad_at_acm.org>
To: <nanfa_at_aquaria.net>
Sent: Thursday, March 29, 2001 3:15 PM
Subject: NANFA-- Old style heaters - usage?

>
> I was digging around some old aquarium stuff that I have acquired over
> time. One heater that I have (but never used yet) is an old hang-over-edge
> type. It has a dial on the top which when turned, moved a screw
> forward. The screw then brings two pieces of metal in contact. As the
> screw is moved further to the right, the two pieces of metal (now in
> contact) bend further in the opposite direction.
>
> o Do the two metal strips have to be in contact for the heater to work?
>
> o What happens when the strips are bent to the opposite side when the
> screw is turned a lot?
>
> Any suggestions appreciated.
>
> Sajjad
>
>
>
/---------------------------------------------------------------------------

--
> /"Unless stated otherwise, comments made on this list do not necessarily
> / reflect the beliefs or goals of the North American Native Fishes
> / Association"
> / This is the discussion list of the North American Native Fishes
Association
> / nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
> / subscribe, unsubscribe, or help in the body (not subject) of an email to
> / nanfa-request_at_aquaria.net. For a digest version, send the command to
> / nanfa-digest-request_at_aquaria.net instead.
> / For more information about NANFA, visit our web page,
http://www.nanfa.org

/----------------------------------------------------------------------------- /"Unless stated otherwise, comments made on this list do not necessarily / reflect the beliefs or goals of the North American Native Fishes / Association" / This is the discussion list of the North American Native Fishes Association / nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word / subscribe, unsubscribe, or help in the body (not subject) of an email to / nanfa-request_at_aquaria.net. For a digest version, send the command to / nanfa-digest-request_at_aquaria.net instead. / For more information about NANFA, visit our web page, http://www.nanfa.org