Contact temperature measurement: Difference between revisions
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The following liquids have been used as '''thermometer liquids'''. The selection of the liquid depends on the scope. | The following liquids have been used as '''thermometer liquids'''. The selection of the liquid depends on the scope. | ||
Muss durch Foto mit Rechten ersetzt werden!! | |||
[[Datei:Fluessigkeitsthermometer.JPG|300px|thumb|right|'''Abbildung 1''' - Flüssigkeitsthermometer]] | [[Datei:Fluessigkeitsthermometer.JPG|300px|thumb|right|'''Abbildung 1''' - Flüssigkeitsthermometer]] | ||
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| bgcolor="#ffff99" align="center"| The thermocouple is an active sensor, it operates without supplemental energy. It does not measure absolute temperature, but a temperature difference. | | bgcolor="#ffff99" align="center"| | ||
''' | '''The thermocouple is an active sensor, it operates without supplemental energy. It does not measure absolute temperature, but a temperature difference.'''''' | ||
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By combining different metals or alloys, a series of sensors for a very high temperature range are made possible. For thermocouples the IEC standard 584 applies. Most common is type K. | By combining different metals or alloys, a series of sensors for a very high temperature range are made possible. For thermocouples the IEC standard 584 applies. Most common is type K. | ||
: | : [[Image:Funktionsschema eines Thermoelementes.JPG|thumb|right|300px]] <br>'' | ||
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== Bimetal thermometer == | == Bimetal thermometer == | ||
[[Datei:Bimetallthermometer.JPG|right|thumb|300px|'''Abbildung 4''' - Bimetallthermometer]] | |||
The principle of the Bimetal thermometer <ref>http://de.wikipedia.org/w/index.php?title=Bimetallthermometer&oldid=75332920 gelesen 28.07.2010</ref> is based on the difference in thermal expansion behavior of two metals that are soldered together. When temperature rises, the bimetal strips bend in proportion to the temperature increase. After calibration the movement of the metal must be transferred to a needle and scale for displaying the temperature measurement. | The principle of the Bimetal thermometer <ref>http://de.wikipedia.org/w/index.php?title=Bimetallthermometer&oldid=75332920 gelesen 28.07.2010</ref> is based on the difference in thermal expansion behavior of two metals that are soldered together. When temperature rises, the bimetal strips bend in proportion to the temperature increase. After calibration the movement of the metal must be transferred to a needle and scale for displaying the temperature measurement. | ||
Revision as of 10:48, 19 November 2012
Author: Hans-Jürgen Schwarz
English Translation by Sandra Leithäuser
back to Temperature Measurement
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