Temperature measurement
Measurement of temperature is based on some properties that are temperature dependent.
Classification of thermometers
Direct
Volume expansion
- Mercury in glass thermometer
- Bimetallic strip
- Bourdon gauge type
Chemical thermometer
- Liquid crystal thermometer
Electrical thermometer
- Resistance thermometer
- Thermistor
- Thermocouple
Indirect
- Infrared ear and tympanic membrane thermometer
Measurement sites
9 common places:
- Rectal,
- Oesophageal,
- Tympanic membrane,
- Toe (??????),
- Bladder,
- Axilla,
- Nasopharynx,
- Central venous,
- Sublingual