Am 22.07.2013 20:55, schrieb Jan Sennesael:
>
> All these sensors are parasite powered.
>
Which temperatures are we talking about? At low temperatures, parasite
power will make the sensor warm itself up a significant amount. There is
no way this could be calibrated by the factory as the resulting
temperature depends on heat conduction between sensor and measured medium.
That said, what's the mechanical/heat transfer layout of your
arrangement? E.g. are you measuring steady/flowing air/liquid, or a
surface of a good/bad heat conductor?
> After this i retried it with another DS18S20 (connected to the +5V - no
> parasite power) and this one was 2.5°C higher dan the DS18B20...
>
To me that would mean the heat transfer into the first sensors isn't as
good as into the latter sensor.
Kind regards
Jan
------------------------------------------------------------------------------
See everything from the browser to the database with AppDynamics
Get end-to-end visibility with application monitoring from AppDynamics
Isolate bottlenecks and diagnose root cause in seconds.
Start your free trial of AppDynamics Pro today!
http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk
_______________________________________________
Owfs-developers mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/owfs-developers
