The fire detectors in my attic work by rate of temperature rise.  Alarm firm
that sold them to me and services my alarm system said that was only way to
go in hot spaces.

John Lauterbach
Macon, GA

-----Original Message-----
From: Davidson <wdavidson@THEGRID.NET>
To: vanagon@GERRY.VANAGON.COM <vanagon@GERRY.VANAGON.COM>
Date: Tuesday, February 16, 1999 1:18 PM
Subject: engine compartment temp?

>Hello Volks,
>I'm working on a fire alarm for my engine compartment.
>I figure that I will install a heat sensor/switch in the engine compartment
>and wire it to a buzzer or siren.
>In order to avoid false alarms, I need to know the MAXIMUM temperature that
>will occur in the engine compartment under normal operating conditions (no
>fire) in, let's say, the Arizona desert in July. I would then use a heat
>sensor/switch rated just above that maximum engine compartment temperature.
>Ideally I would like an actual measured maximum temperature, but estimates
>are welcome too. Please specify weather your response if measured or
>estimated.
>Thanks
>Bill
>90 Westy Syncro