[Amps] Alpha vs Henry

[Jeff Blaine]

I think the generic IR thermometer/gun is going to respond to the warmest temp item in the lens field because that's going to be the 
black body generating the most heat.  And that warmest source is going to be the anode for ceramics looking down, or perhaps the 
body adjacent the anode for something like a horizontal tube with a big anode cooler on it.

73, Jeff ACØC
www.ac0c.com

-----Original Message----- 
From: Roger (sub1)
Sent: Friday, April 08, 2011 4:20 PM
To: amps at contesting.com
Subject: Re: [Amps] Alpha vs Henry

On 4/8/2011 12:35 PM, Ron Youvan wrote:
> Gary Schafer wrote:
>
>> With IR how do you know if you are measuring actual tube envelope glass/seal
>> temp or the radiated heat itself?
>    I'm pretty sure IR is radiated from objects and hot air is not an
> object.  IR thermometer's accuracy is independent to of ambient air
> temperature.

Air is an object, just one that is difficult to hold in your hand. IR
guns (and cameras) are used to measure air temp.

73

Roger (K8RI)

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