Filledsystemthermometer
Precautions while using Laboratory Thermometers
Filledsystemthermometer
Thistypeofthermometerhasabourdontubeconnectedbyacapillarytubetoahollowbulb.Whenthesystemisdesignedforandfilledwithagas(usuallynitrogenorhelium)thepressureinthesystemsubstantiallyfollowsthegaslaw,andatemperatureindicationisobtainedfromthebourdontube.Thetemperaturepressuremotionrelationshipisnearlylinear.Atmosphericpressureeffectsareminimizedbyfillingthesystemtoahighpressure.Whenthesystemisdesignedforandfilledwithaliquid,thevolumechangeoftheliquidactuatesthebourdontube.
Pull the ear canal open by gently pulling the ear lobe back and up
Turn the thermometer on and make sure the screen reads zero
Discard the plastic cover and put a new one on
Thermometer Safety
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Uses
Laboratory thermometers are devices used to measure temperature
Laboratory Thermometers
Bimetallic stripthermometers
Selection Criteria for Laboratory Thermometers
Vaporpressurethermalsystem
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