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Racire extrema Prima conditie: sa nu poti dormi langa calculator cand functioneaza.


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Old 26-03-2010, 15:29   #1
Vladutz20
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Exclamation De unde pot cumpara sonde ?

Urmeaza sa achizitionez acest aparat http://www.conrad.de/ce/de/product/1...HOP_AREA_17210 dar am aflat ca nu vine cu sonde in pachet si as vrea sa stiu de unde pot achizitiona si eu sonde pentru el ?
Ar trebui sa fie cam ca astea http://forum.lab501.ro/attachment.ph...7&d=1259235623 .
Multumesc mult si sper sa gasesc 2 sonde pentru el
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Old 26-03-2010, 15:30   #2
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http://www.google.ro/#hl=ro&source=h...02cf55b2efc795

http://www.adelaida.ro/product_info....84a0603668d6c4
http://www.mxplus.eu/sonde-de-supraf...lu--p-461.html

Last edited by M3kk; 26-03-2010 at 15:32.
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Old 26-03-2010, 15:33   #3
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Sonde de temperatura
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Old 26-03-2010, 15:39   #4
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Ok multumesc mult . Se poate sterge threadul.
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Old 26-03-2010, 15:42   #5
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Mai e util si pentru altii .
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Old 26-03-2010, 15:48   #6
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@M1cutzu ma poti lamuri si pe mine cu o problema te rog ?
Daca as achizitiona aceasta sonda http://www.instrumente-de-masura.ro/...sid=24&mpid=16 sa inteleg ca daca folosesc azot lichid de la -50 incepe sa aibe marja de eroare mare ?
Aceasta sonda http://www.adelaida.ro/product_info....84a0603668d6c4 este compatibila cu acel aparat ?

Last edited by Vladutz20; 26-03-2010 at 15:51.
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Old 26-03-2010, 16:18   #7
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Sunt K-Type, deci da, sunt compatibilie.
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Old 26-03-2010, 16:23   #8
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Sondele K sunt teoretic standardizate, deci ar trebui sa fie compatibile cu orice aparat. Faptul ca scrie acolo ca plaja de temperatura e limitata intre -40 si 250 imi da de gandit, poate e o sonda de calitate slaba, standardul spune ca o sonda K functioneaza OK intre -200 si +1350C.
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Old 31-03-2010, 12:59   #9
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Sondele astazi au fost puse la posta de catre firma din Craiova si astept sa vina cat mai repede si termometrul
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Old 19-06-2010, 13:02   #10
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am cautat prin magazine si nu gasesc multimetru care sa mearge sub -50 grade. Ce inseamna acele -50 grade? acuratete 100 si, ce e sub e cu o marja de eroare mai mare sau, pur si simplu 50 and that's it? sau, mai simplu: unde gasesc ceva care sa poata masura temp. sub -100?
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Old 19-06-2010, 13:33   #11
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Cele care masoara sub 100 si sunt precise sunt cam scumpe

Cele mai ieftine ar fi Voltcraft...
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Old 19-06-2010, 13:41   #12
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banuiesc ca asa ceva nu e rau strict pt masurarea temperaturii:http://germanelectronics.ro/conrad.p...d4T1pXMWpPUT09

problema ar mai fi o sonda decenta deoarece toate au limitarea de -50 deasemenea pe can micutzu spune ce toate ar trebui sa functioneze pana la -200

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Old 19-06-2010, 15:29   #13
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Exemplu concret - un aparat care este garantat la -50 oC poate avea o abatere de ~ 10 oC la -100. Un aparat care este garantat la -200 poate avea o abatere cuprinsa intre 0.004 oC si 1 oC la -200, in functie de cat de bun/scump este aparatul.

Ceva similar se intampla si in cazul sondelor. Pana acum am vazut sonde care nu coboara sub -167 oC, sonde care nu coboara sub -180 oC si sonde care bagate in azot ajung la -196. Evident, dintre astea cele mai precise sunt ultimele.
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Old 19-06-2010, 16:30   #14
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asadar, sondele garantate la -50 vor masura cat de cat precis la o temperatura mai mica de acel 50?
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Old 19-06-2010, 23:59   #15
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Da... cu o abatere mai mica sau mai mare
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Old 20-06-2010, 00:36   #16
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Quote:
sondele garantate la -50 vor masura cat de cat precis la o temperatura mai mica de acel 50?
... la o temperatura mai mare de -50C.
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