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

Robert Atkinson robert8rpi at yahoo.co.uk
Sat Jan 24 14:05:40 EST 2009


Hi John,
Never used the 2804A, but agree with the other comments. Weller came up with an interesting probe to check soldering iron tips withot thermal loading. It is basically an iron with two sensors, one near the heater and one near the tip. These form a bridge which is balanced when there is no thermal "flow" into or out of the load. It might be possible to do something similar with the 2804A.

Robert G8RPI.


--- On Sat, 24/1/09, John Ackermann N8UR <jra at febo.com> wrote:

> From: John Ackermann N8UR <jra at febo.com>
> Subject: [time-nuts] Any experienced HP 2804A thermometer users out there?
> To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
> Date: Saturday, 24 January, 2009, 3:42 PM
> 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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