The cat's meow on this kind of thing is a thermal image camera. Just like
james bond. You can zoom in on a specific feature and profile the spot
pretty precisily.
There's a few pics on my qrz page of this type using that gadget.
Wish I had one in my junkbox. A buddy of mine has one and I was prividliged
enough to get to use it. $25K at your local instrumentation shop. Ouch!
10 out of 10 on the cool-gadget scale, though. :)
73/jeff/ac0c
--------------------------------------------------
From: "Bill, W6WRT" <dezrat1242@yahoo.com>
Sent: Sunday, July 05, 2009 10:57 PM
To: <Amps@contesting.com>
Subject: Re: [Amps] monitoring tube seal temps
> ORIGINAL MESSAGE:
>
> On Sun, 5 Jul 2009 09:26:01 -0400, "Larry" <n1miw@cox.net> wrote:
>
>> I've been following the RTTY vs. tube seal temp thread with interest. It
>>was mentioned that you can use the crayon to monitor the seals, but those
>>are one-time use. What about a circuit such as the one used in the
>>hand-held
>>temperature guns (IR, I believe?). Are there available components out
>>there
>>where we could make our own small-scale circuit to monitor the tube temps?
>>Personally, I've only seen electronic temp sensors which work up to around
>>150 deg C. What do you think? Larry N1MIW
>
> REPLY:
>
> Excellent idea, if the components are available. I have used a temperature
> gun
> directly and it works great, if one can access the seals while the amp is
> operating. RF makes it go nuts, so you have to power off and take the
> measurement immediately, but it does the job.
>
> 73, Bill W6WRT
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>
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