Subject: Fire detection loops
From: ACRE NL
Date: 2/8/2002, 9:39 AM


Mike Harrington

Seems there was an article in kitplanes many
moons ago describing fire
detectors that used a low melting point metal.
the metal melts, circuit opens, the big red light
comes on. This has the advantage of letting you
know if the circuit goes bad.

Monty

Mark Wrathall wrote:
The fire loops used on commercial turbines are
made up with a cross section
like coax cable. The shield and core are solid
metal, separated by a low
melting point salt which insulates as a solid.
When melted, it conducts,
shorting the two conductors, and turning on the
light in the cockpit
(basically).

Guys your on the right track. I'm looking for cheap,
reliable and easy to install. The cheaper the better.
Mike I let my subscription run out on kit planes could
you find the article your talking about?.. The turbine
loop coax cable sounds very expensive.

Thanks guys

John in a veri-eze sometimes

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