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</o:shapelayout></xml><![endif]--></head><body lang=CS link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dost věcí bylo v knihách od Analog Devices. Dnes to budou mít určitě na netu. <o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>V podstatě jde ale o to že se měří 4-vodičově a měří se i offsety (vzniklé termonapětí) při vypnutém buzení Pt100. Samozřejmostí je použití přesného referenčního odporu atd. Dříve se také používalo můstkové zapojené, aby jste u Pt100 neměřil část odporu, které není zajímavá, protože pak je A/D převodník využitý jen z cca 30% (napři při rozsahu 0-100C, kdy Pt100 má odpor Pt100 100-138 Ohmů.).<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>S pozdravem<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>ing. Pavel Poucha<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>jednatel<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>pavel.poucha@papouch.com<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>Papouch s.r.o.<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>Strašnická 1a, 102 00 Praha 10<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>Tel. +420 272 732 827<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>Fax +420 272 681 232<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>Máte-li chuť, navštivte naše stránky <a href="http://www.papouch.com/">http://www.papouch.com/</a><o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></font></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";font-weight:bold'>From:</span></font></b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> hw-list-bounces@list.hw.cz [mailto:hw-list-bounces@list.hw.cz] <b><span style='font-weight:bold'>On Behalf Of </span></b>Ondřej Kozumplík<br><b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 22, 2013 10:07 AM<br><b><span style='font-weight:bold'>To:</span></b> HW-news<br><b><span style='font-weight:bold'>Subject:</span></b> Re: precizni termostat<o:p></o:p></span></font></p></div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>tem kouzlum bych se docela rad priucil :) poradite kudy na to ? co googlit ? ktera skripta ?<br><br>diky<br><br clear=all><o:p></o:p></span></font></p><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Ataman<br><a href="http://www.hysteria-metal.cz" target="_blank">http://www.hysteria-metal.cz</a><o:p></o:p></span></font></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Dne 22. května 2013 9:23 Pavel Poucha <<a href="mailto:p.poucha@papouch.com" target="_blank">p.poucha@papouch.com</a>> napsal(a):<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Termočlánek ani DS18B20 nebude to pravé, protože termočlánek stárne. Pro<br>0.01C rozlišení a přesnost pod 0.05C bych použil Pt100. Dají se dělat<br>všelijaká kouzla a dosáhnout stability 0.01C.<br><br>Tedy cesta bude převodník Pt100 na napětí nebo s dig. výstupem a pak nějaké<br>malé PLC.<br><br>S pozdravem<br>ing. Pavel Poucha<br>jednatel<br><a href="mailto:pavel.poucha@papouch.com">pavel.poucha@papouch.com</a><br><br>Papouch s.r.o.<br>Strašnická 1a, 102 00 Praha 10<br>Tel. +420 272 732 827<br>Fax +420 272 681 232<br><br>Máte-li chuť, navštivte naše stránky <a href="http://www.papouch.com/" target="_blank">http://www.papouch.com/</a><o:p></o:p></span></font></p><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><br><br>-----Original Message-----<br>From: <a href="mailto:hw-list-bounces@list.hw.cz">hw-list-bounces@list.hw.cz</a> [mailto:<a href="mailto:hw-list-bounces@list.hw.cz">hw-list-bounces@list.hw.cz</a>] On<o:p></o:p></span></font></p></div><div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Behalf Of Slavomir Skopalik<br>Sent: Wednesday, May 22, 2013 9:12 AM<br>To: 'HW-news'<br>Subject: RE: precizni termostat<br><br>Dobry den,<br>poohlednete se po nejakem levnem PLC s 16 bit prevodem a termoclankovym<br>modulem.<br><br>Napriklad SIMATIC S7-1200 + prislusny modul.<br><br><a href="https://www.automation.siemens.com/mcms/programmable-logic-controller/en/simatic-s7-controller/s7-1200/Pages/Default.aspx" target="_blank">https://www.automation.siemens.com/mcms/programmable-logic-controller/en/sim<br>atic-s7-controller/s7-1200/Pages/Default.aspx</a><br><br>Klasicke regulatory asi nebudou mit asi pozadovanou presnost.<br><br>Slavek<br><br>Ing. Slavomir Skopalik<br>Jednatel spolecnosti<br>Elekt Labs s.r.o.<br>Sber a vyhodnoceni dat ze stroju a laboratori systemem MASA<br>(<a href="http://www.elektlabs.cz/m2demo" target="_blank">http://www.elektlabs.cz/m2demo</a>)<br>----------------------------------------------<br>Adresa:<br>Elekt Labs s.r.o.<br>Chaloupky 158<br>783 72 Velky Tynec<br>Czech Republic<br>----------------------------------------------<br>Mobil: +420 724 207 851<br>icq:199 118 333<br>skype:skopaliks<br><a href="mailto:e-mail%3Askopalik@elektlabs.cz">e-mail:skopalik@elektlabs.cz</a><br><a href="http://www.elektlabs.cz" target="_blank">http://www.elektlabs.cz</a><br><br><br>> -----Original Message-----<br>> From: <a href="mailto:hw-list-bounces@list.hw.cz">hw-list-bounces@list.hw.cz</a><br>> [mailto:<a href="mailto:hw-list-bounces@list.hw.cz">hw-list-bounces@list.hw.cz</a>] On Behalf Of Lukas Burda<br>> Sent: Wednesday, May 22, 2013 6:55 AM<br>> To: HW-news<br>> Subject: precizni termostat<br>><br>><br>> Dobry den,<br>> nemel byste nekdo tip na termostat, neco jako tohle:<br>> <a href="http://www.viewchain.com/100240v-ac-pid-temperature-controller" target="_blank">http://www.viewchain.com/100240v-ac-pid-temperature-controller</a><br>> -pt100-thermostat-2-omron-realy-output_p3020.html<br>> Ovsem s rozlisenim 0.01 K. Staci rozliseni - samozerjme ze ne<br>> absolutni presnost. Ta pro tohle pouziti neni tak dulezita.<br>> Melo by jit o regulaci teploty ve vodni lazni. Se starym<br>> termostatem to melo stabilitu pri nejakych 60 stupnich kolem<br>> 0.03 stupne. Stary je ovsem rozbity, nedostupny. Nez se<br>> snazit o opravy bylo by mozna zkusit koupit neco hotoveho.<br>> Pri pokusu se sestavou teplomer-PC-ovladani topeni a s PID<br>> regulatorem v tom PC jsem dosahl pozadovanych parametru,<br>> takze nejaky takovyhle obecny PID regulator by mel byt to<br>> prave, ovsem s takovym rozlisenim a tim odpovidajici<br>> citlivosti cele regulace nejak nemuzu nalezt. Zajimavy by byl<br>> i vystup s nejakou pomalubeznou PWMkou (0.1 HZ ?) a spinat<br>> topeni pres SSR.<br>><br>> Dekuji Lukas Burda<br>><br>> _______________________________________________<br>> HW-list mailing list - sponsored by <a href="http://www.HW.cz" target="_blank">www.HW.cz</a><br>> <a href="mailto:Hw-list@list.hw.cz">Hw-list@list.hw.cz</a> <a href="http://list.hw.cz/mailman/listinfo/hw-list" target="_blank">http://list.hw.cz/mailman/listinfo/hw-list</a><br>><br><br>_______________________________________________<br>HW-list mailing list - sponsored by <a href="http://www.HW.cz" target="_blank">www.HW.cz</a><br><a href="mailto:Hw-list@list.hw.cz">Hw-list@list.hw.cz</a><br><a href="http://list.hw.cz/mailman/listinfo/hw-list" target="_blank">http://list.hw.cz/mailman/listinfo/hw-list</a><br><br>_______________________________________________<br>HW-list mailing list - sponsored by <a href="http://www.HW.cz" target="_blank">www.HW.cz</a><br><a href="mailto:Hw-list@list.hw.cz">Hw-list@list.hw.cz</a><br><a href="http://list.hw.cz/mailman/listinfo/hw-list" target="_blank">http://list.hw.cz/mailman/listinfo/hw-list</a><o:p></o:p></span></font></p></div></div></div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p></div></body></html>