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nodo-domotica.nl • Toon onderwerp - ds18b20 - Afdrukweergave
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ds18b20
http://www.nodo-domotica.nl/forum/viewtopic.php?f=4&t=1424		 « Vorige  Pagina 2 van 2
Auteur:  Remko [ 17 jan 2013, 12:23 ]
Titel:  Re: ds18b20
Thanx helemaal goed. Ik kreeg geen grafiek omdat ik in eerste instantie expension no had. Het helpt dan schijnbaar niet meer om er yes van te maken maar moet je ff alles tbv de variabele opnieuw ingeven. Dan werkt het wel.
Auteur:  markuser [ 15 feb 2013, 19:53 ]
Titel:  Re: ds18b20
Hallo,

Komt me bekend voor. Echter de afwijking is wel constant. Het verschil heb ik in de webapp gecompenseerd. Bij mij zit er een afwijking van 1,5 graad in de sensor.
Echter een thermostaat van de CV kun je ook ijken, en kan dus ook afwijken.
Dus welke nu goed is.... Het beste is een geijkte thermometer om alles af te stellen.

Mark
Auteur:  manjh [ 16 feb 2013, 09:21 ]
Titel:  Re: ds18b20
Klopt, uitschieters heb ik ook wel eens gezien. Maar ik heb ook batches gehad die allemaal gelijk waren, op 0.1 graad nauwkeurig.
Het beste is inderdaad om 1 sensor te "ijken" met een betrouwbare thermometer, en die sensor dan apart te houden. Even markeren zodat je hem niet kan verwisselen. Daarna voor nieuwe sensren even je ijksensor ernaast houden...
Auteur:  manjh [ 17 feb 2013, 10:11 ]
Titel:  Re: ds18b20
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