What are the thermometric liquids used in thermometer?
What are the thermometric liquids used in thermometer?
Liquid in thermometers are suitable for narrow change of measurements. The most commonly used liquid is mercury. The range of mercury thermometer is 390C−3570C. Mercury does not wet the solid.
What is the thermometric substance of thermoelectric thermometer?
1 Platinum Resistance Thermometer. Platinum is suitable as a thermometric substance because of its high temperature coefficient of resistance, constancy of resistance at particular temperature and reproductivity. Platinum resistance thermometer was first constructed by Sir William Siemens in 1871.
What are the 5 types of thermometer?
The different types of medical thermometers
- Digital thermometer. Digital thermometers work by using heat sensors that determine body temperature.
- Oral thermometer.
- Digital ear (tympanic) thermometer.
- Forehead (temporal) thermometer.
- App-based thermometer.
- Pacifier thermometer.
- Mercury (liquid in glass) thermometer.
Where are resistance thermometers used?
Due to their accuracy and robustness, they are extensively used as in-line thermometers in the food industry. Within a wide range of temperatures the resistance of metals increases linearly with temperature. The measuring element is usually made of platinum.
What is called thermocouple?
thermocouple, also called thermal junction, thermoelectric thermometer, or thermel, a temperature-measuring device consisting of two wires of different metals joined at each end. One junction is placed where the temperature is to be measured, and the other is kept at a constant lower temperature.
How many types of thermometer are there?
Three types of thermometers are alcohol, liquid crystal, and infrared radiation (pyrometer). The three main temperature scales are Celsius, Fahrenheit, and Kelvin.
