Keep in mind that the boiling point is dependent on atmospheric pressure, 
which is not a constant.

Bob Ammerman
RAm Systems

----- Original Message ----- 
From: "Lonnie" <kf4haz@cashette.com>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Sent: Wednesday, June 01, 2005 3:00 AM
Subject: Re: [OT] Common, safe boiling points.


> If I am not mistaken solutions of water and say sugar or salt will have 
> higher boiling points dependant on the concentration.
> In short add a teaspoonful of sugar and wait till it starts boiling again, 
> measure temp with candy thermometer and sensor, then add more and repeat 
> until you have covered the desired range.
>
> KF4HAZ - Lonnie Underwood
>
> ----- From: "PicDude" <picdude2@
> Hi all,
>
> Trying to calibrate a resistive temperature sensor, but my existing method 
> is
> producing some inconsistent results.  Pot of oil on a stove at various 
> temps
> and comparing the sensor to an LM35DT (~0.5 deg C accuracy).  The problem
> seems to be that the resistive sensor takes a significant time to come up 
> to
> the temp of the oil and settle to a stable resistance.  If I read the data
> points when the oil temp is gradually rising, it varies significantly from
> when the oil temp is decreasing.   It is very difficult to get the oil to
> stay still at a specific temp for any decent length of time.  However, in 
> a
> pot of boiling water, I can get a stable and trustable measurement.
>
> So I need to do this for a range of around room temp to a few hundred 
> degrees
> F (say 160 deg C), and would like to select easy-to-find chemicals that 
> have
> various boiling points in this range and would be safe for me to boil on a
> stove.  I have found a bunch on the internet (example:
> http://www.engineeringtoolbox.com/boiling-points-fluids-gases-24_155.html  
> ),
> but I'm not sure where to find much of these, and if they're safe to boil 
> on
> a stove.
>
> Any ideas how I can go about this?
>
> Cheers,
> -Neil.
>
>
>
> -- 
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>
>
> -- 
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
> 

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist