[Amps] Alpha vs Henry

[Roger (sub1)]

On 4/8/2011 1:15 PM, dstewart wrote:
> On 04/08/2011 06:52 AM, Gary Schafer wrote:
>> With IR how do you know if you are measuring actual tube envelope glass/seal
>> temp or the radiated heat itself?
>> Same when measuring exterior anode tubes. Are you seeing the tube structure
>> or the hot air coming out?
>> Probably a little easier on the exterior anode tube as you can move the IR
>> thermometer window down away from the air flow some.
>>
>> 73
>> Gary  K4FMX/lists.contesting.com/mailman/listinfo/amps
> You could test the accuracy of the IR gun method if you have a spare
> tube.  Put the spare tube and some other control material in the oven at
> say 300 deg for a half hour and check it with the IR gun.  At least you
> will know if the IR gun is able to read the true temp of the tube,

Only if you have a calibrated thermometer to measure the temp in the 
oven.  Oven settings  are ball park temps

73

Roger (K8RI)

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