Table of Contents
What is the use of an alcohol thermometer?
Alcohol thermometers are used to measure temperatures from -115°C to78. 5°C. The maximum temperature that can be measured depends on the boiling point of the liquid inside the bulb. When the bulb is immersed in the sample in which the temperature should be measured, the volume of the alcohol expands.
Where is an alcohol thermometer used to measure?
Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (−94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used.
Why is alcohol used to measure temperature?
Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. If it freezes it won’t move in the tube, so a liquid must be used that has a freezing point that’s lower than the temperature it’s measuring.
What is in alcohol based thermometer?
An alcohol thermometer is a small sealed tube made of glass that has a small hollow bulb on one end and a thin capillary opening running through the length of its center. The bulb and connected capillary chamber are filled partly with ethanol and partly with nitrogen and ethanol vapors.
Are alcohol thermometers accurate?
Alcohol thermometers are also inexpensive and durable. They are typically not as accurate as mercury thermometers because of the alcohol’s susceptibility to evaporation, polymerization potential and capillary separation. Their primary advantage is safety to humans and the environment.
How accurate are alcohol thermometers?
Why alcohol thermometers are not used for measuring high temperature?
Since, alcohol starts boiling at 80℃ while the boiling point of mercury is 375℃. So, an alcohol thermometer cannot measure the temperature of boiling water as it has the limit to measures up to 80℃. Therefore, No alcohol thermometer cannot be used to measure the temperature of boiling water.
What kind of thermometer is used to measure?
A thermometer is an instrument that measures temperature. It can measure the temperature of a solid such as food, a liquid such as water, or a gas such as air. The three most common units of measurement for temperature are Celsius, Fahrenheit, and kelvin. The Celsius scale is part of the metric system.
What are the advantages of using alcohol in a thermometer?
Advantages of Alcohol Thermometer It can measure low temperatures. It measures the temperature precisely. The expansion of alcohol is regular. It is less toxic and less hazardous.
What is the alcohol used to make thermometer?
Traditional thermometers measure the temperature using mercury , but you can make your own at home with just water and rubbing alcohol. While the homemade thermometer can’t be used to tell if you have a fever, you can still find out how hot or cold it is around your home.
Can you use alcohol in a thermometer?
Alcohol thermometers are used in the place of mercury thermometers considering the safety of the chemical compound. Unlike mercury in the mercury thermometer, alcohol is less toxic and evaporates quickly. But the maximum temperature measured by an alcohol thermometer is 78.5°C; hence this thermometer is suitable for measuring lower temperatures.
What is an alcohol thermometer used to measure?
Alcohol thermometer is a type of thermometer that uses a bulb filled with alcohol as the temperature sensor. The liquid inside the bulb can be pure ethanol, toluene, kerosene or any other suitable component depending on the application. Alcohol thermometers are used to measure temperatures from -115°C to78.5°C .