Quote:
Originally Posted by Freyguy
Yes, was a typo. Happens when I try to squeeze these posts in during work 
Won't even get into the C vs F debate. Suffice to say, 49 years raised on the Fahrenheit system is a hard habit to break. Everything from home thermostats to the weather reports are in F here in the states. And this did start as a personal project after all 
If you want to eliminate the 1.25% conversion error you could always redo the lookup tables for C. Don't know if it's really worthwhile though in light of the other tolerance errors.
A very popular temperature IC that I and other engineers have used over the years is the national semi LM50. That was labeled as "precision" and had an error of +/-2degC at room temp and +/-4degC over full scale. |
I reckon it is quite accurate enough as it is. Now that I have eliminated my heat source, its within a degree or so of my thermometer - at least at room temp - so that'll do nicely. I guess you'd have to be unlucky for all the tolerances/errors to be just one way.
This country converted to the metric system about 50 years ago, so we have had time to get used to it!