precautions while using laboratory thermometers

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Filledsystemthermometer

Precautions while using Laboratory Thermometers

The precautions to be observed while reading a laboratory thermometer.
Filledsystemthermometer

Thistypeofthermometerhasabourdontubeconnectedbyacapillarytubetoahollowbulb.Whenthesystemisdesignedforandfilledwithagas(usuallynitrogenorhelium)thepressureinthesystemsubstantiallyfollowsthegaslaw,andatemperatureindicationisobtainedfromthebourdontube.Thetemperaturepressuremotionrelationshipisnearlylinear.Atmosphericpressureeffectsareminimizedbyfillingthesystemtoahighpressure.Whenthesystemisdesignedforandfilledwithaliquid,thevolumechangeoftheliquidactuatesthebourdontube.


Bimetallic thermometer
Thermistor
Types
Turn the thermometer on and make sure the reading is at zero
Turn the thermometer on and make sure the screen reads zero
Themometer
Uses at home clinics and hospitals
Take a temperature with a digital thermometer
Considerations
Discard the plastic cover and put a new one on
Selection Criteria for Laboratory Thermometers
Warning
More ...

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