[Amps] What blower?

[Gary Smith]

The name of the heat melt stick is either "Templestick" or "Templestik."  We 
used them on the railroad to detect hot bearings on freight cars.  They can 
be had in a variety of temperature melting points.
73,
Gary...wa6fgi


----- Original Message ----- 
From: "Bill Turner" <dezrat1242 at ispwest.com>
To: <k6zz at ccis.com>; <amps at contesting.com>
Sent: Friday, January 27, 2006 7:44 PM
Subject: Re: [Amps] What blower?


> ORIGINAL MESSAGE:
>
> At 06:58 PM 1/27/2006, Bob Selbrede, K6ZZ wrote:
>
>>This brings up a good point.  How does one go about
>>determining how much airflow a set of tubes require and the
>>backflow they create?  Is that info normally found on the
>>tube spec sheet somewhere?  What does a pair of 3CX800A7's
>>require?
>>
>>Thanks, Bob
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> The only true measure of cooling power is the temperature of the tube
> as specified by the manufacturer. Typically they will list different
> temperatures for different areas of the tube. If you don't exceed
> them, you have enough air.
>
> One way to measure tube temperature is with special paint, label or
> crayon that changes color at a specific temperature. One nice thing
> about them is you can put multiple spots on the tube and read them
> all later, as opposed to trying to take real-time measurements in a
> hazardous environment.
>
> McMaster-Carr has them and no doubt others do too. Search for
> "temperature indicators".
>
> 73, Bill W6WRT
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