Filledsystemthermometer
Precautions while using Laboratory Thermometers
Filledsystemthermometer
Thistypeofthermometerhasabourdontubeconnectedbyacapillarytubetoahollowbulb.Whenthesystemisdesignedforandfilledwithagas(usuallynitrogenorhelium)thepressureinthesystemsubstantiallyfollowsthegaslaw,andatemperatureindicationisobtainedfromthebourdontube.Thetemperaturepressuremotionrelationshipisnearlylinear.Atmosphericpressureeffectsareminimizedbyfillingthesystemtoahighpressure.Whenthesystemisdesignedforandfilledwithaliquid,thevolumechangeoftheliquidactuatesthebourdontube.
Laboratory thermometers are devices used to measure temperature
Clean the thermometer after each use
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