[time-nuts] Any experienced HP 2804A thermometer users out there?

[John Ackermann N8UR]

The best I can get. This is time-nuts, after all.  :-)

I'm certainly not looking for the full millidegree accuracy of the 
thermometer, but have always been curious about heat transfer issues 
with thermometer probes and wondered if there were any tricks apart from 
laying the end of the probe horizontally on the board (maybe with the 
help of some thermal grease, as Brooke suggested).  The challenge is the 
relatively small contact area between the circular probe and the flat 
board, and the corresponding fact that the majority of the probe's 
surface area is in contact with the ambient air rather than the surface 
of interest.

John
----

Mike Feher said the following on 01/24/2009 11:15 AM:
> What type of accuracy are you looking for John? 
> 
>  
>  
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>  
>  
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of John Ackermann N8UR
> Sent: Saturday, January 24, 2009 10:42 AM
> To: Discussion of precise time and frequency measurement
> Subject: [time-nuts] Any experienced HP 2804A thermometer users out there?
> 
> The temperature probes for the 2804A quartz thermometer seem primarily 
> intended for liquid immersion.  I'm looking for practical tips on how to 
> couple the probe to a solid surface (e.g., a PC board) for accurate 
> temperature measurements of the surface.
> 
> Anyone know the best way to do this?
> 
> Thanks,
> 
> John
> 
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