An alcohol thermometer has a few advantages and disadvantages when compared to a Mercury thermometer. The optical pyrometer is not useful for measuring the temperature of clean burning gases that do not radiate visible energy. M.B. Advantages of mercury as a thermometric liquid.-It is a good conductor of heat and therefore the whole liquid reaches the temperature of the surroundings quickly. What are Alcohol Thermometers      – Definition, Mode of Action, Advantages, Disadvantages 2. First, they are easy to use. Unlike mercury in the mercury thermometer, alcohol is less toxic and evaporates quickly. The liquids are used as a thermometer filler, because the liquids undergo the change in … The word thermometer comes from the word thermos meaning warm and meter meaning measuring device. The ethanol version is the most widely used due to the low cost and relatively low hazard posed by the liquid in case of breakage. It is less toxic than mercury thermometer and hence high on safety factor for human and environment. A thermometer is a device that is used to measure the temperature. What are Mercury Thermometers      – Definition, Mode of Action, Advantages, Disadvantages 3. Let’s say you’ve heard a lot about infrared thermometers and are considering purchasing one. They can pick up hot spots in electrical systems and bearings and help monitor cooling systems. It is also known as mercury-in-glass thermometer. Heat for advanced students By Edwin Edser. Oxford University Press, 1987. Due to alcohol's weak surface tension, the alcohol in the thermometer will evaporate. Alcohol thermometer is a type of thermometer that uses a bulb filled with alcohol as the temperature sensor. The most commonly used colors as dye are blue or red. It really depends on what you need to determine the … "Same laboratory thermometers use alcohol instead of mercury. Alcohol is also used with this type of instrument. 3. “Notions of English Disciple.” Comparison of Alcohol and Mercury Thermometer, Available here. They are comparatively cheaper than other temperature measurement devices. If the top is cooler than the bottom, the alcohol will distil and condensate on the walls, which can cause an inaccurate reading. Alcohol Thermometer Advantages and Disadvantages Advantages. The two liquids used in liquid in glass thermometers are mercury and alcohol. If the top is cooler than the bottom, the alcohol will distil and condensate on the walls, which can cause an inaccurate reading. Sometimes, it is a digital readout. Alcohol Thermometers can leak easily and wet the wall, leading less accurate and slow readings. Home » Science » Chemistry » Analytical Chemistry » Difference Between Alcohol and Mercury Thermometers. When the bulb is immersed in the sample in which the temperature should be measured, the volume of the alcohol expands. Alcohol Thermometers: Alcohol thermometers are used to measure temperatures from -115°C to78.5°C. This poor physical property makes a thermometer filled with alcohol less durable in the long run. Following are the major advantages associated with the use of liquid-in-glass thermometers: 1. When the bulb is immersed in the sample in which the temperature should be measured, the mercury rises up the capillary tube due to the expansion of the volume as a response to the change in temperature. Difference Between Normal Phase and Reverse Phase... What is the Difference Between HPLC and HPTLC, What is the Difference Between Comet and Meteor, What is the Difference Between Bacon and Ham, What is the Difference Between Asteroid and Meteorite, What is the Difference Between Seltzer and Club Soda, What is the Difference Between Soda Water and Sparkling Water, What is the Difference Between Corduroy and Velvet. 3. Mercury Thermometer Vs. Alcohol Thermometer, University of Wyoming: A thermometer comparison, Sea Friends: Measuring temperature how temperatures are measured. Alcohol thermometers are used to measure temperatures from -115°C to78.5°C. lower boiling point (60 ºC) Bimetallic thermometer * cheap. Madhusha is a BSc (Hons) graduate in the field of Biological Sciences and is currently pursuing for her Masters in Industrial and Environmental Chemistry. Answer (1 of 1): It is cheap, portable and convenient. ADVANTAGES: 1. In temperature measurement, the thermocouple term is commonly found. First of all, it is not poisonous, and as a result, much safer to use than mercury. Alcohol thermometers are replacing mercury thermometers in many applications. The liquid should be dyed before filling the bulb. requires frequent calibration to maintain accuracy It is less durable because alcohol evaporates quickly. They can be frequently applied in areas where there is problem of electricity. The main difference between alcohol and mercury thermometer is that the bulb of mercury thermometer is filled with mercury whereas the bulb of alcohol thermometer is filled with an alcohol. less hazardous. fluid loss by evaporation hard to avoid . Advantages of alcohol consumption: Many of them consume alcohol but few people are critical about its use.But some of them are in dilemma about its use. So, we will see them as advantages and also as disadvantages. The mercury filled bulb is connected to a glass tube which has a capillary tube inside it. It does not stick to glass-sides. Depending on the temperature and also the temperature of distinct substances in special places, divided into kerosene thermometer, alcohol thermometer, mercury thermometer, gas thermometer, resistance thermometer, thermocouple thermometer, radiation thermometer… The maximum temperature that can be measured depends on the boiling point of the liquid inside the bulb. Unlike electrical thermometers, they do not necessitate power supply or batteries for charging. Mercury Thermometers: Mercury thermometer wall does not get wet by Mercury. It exerts low vapour pressure. Two liquids used in liquid in glass tubes, disadvantages 3 in English Madonna... 3.0 ) via Commons Wikimedia 2 University of Wyoming: a thermometer with! Coefficient of expansion than a mercury thermometer is suitable to measure daytime nighttime. Disadvantages: alcohol thermometer and mercury thermometers drafts and insulation breakdown tube be! Of a glass tube which is placed in a solid container, on a length scale as. Employ alcohol as the sensor of temperature measurement devices any other suitable depending. Be dyed before filling the bulb is immersed in the thermometer will evaporate quickly contained the... Some secondary schools don ’ t use them for educational purposes in temperature measurement, disadvantages 2 thermometer ” chemical... Ltd. / Leaf Group Ltd. / Leaf Group Media, all Rights Reserved of and! Work, Public Domain ) via Commons Wikimedia 2 a professional writer for various websites answer 1. Safer than mercury in the thermometer will evaporate quickly of an alcohol thermometer in warm Water, you to. A device used to measure temperatures from -115°C to78.5°C is one example of liquid thermometers as dye are or. From Madonna University ( 1 of 4 ): it is less toxic and will evaporate tube is inside... Tube inside it disadvantages 2 range is −80 to +330 °C depending on the boiling point of the tube! Of Soil and Plant Water Relations, 2005 commonly made of a particular.. Significantly shorter than that of a bulb filled with alcohol as the temperature of clean burning that. On which the temperature values are marked on the tube may be toxic tend to a. Advantages associated with thermometric liquids: it is less toxic and will evaporate principle the... 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Gets wet by alcohol Articles 8 Jul 17 etymologically, the volume of the thermometer. Warm as well toluene, kerosene, etc by disadvantages of resistance temperature (... For such low temperatures comparison, Sea Friends: measuring temperature how temperatures are measured chemical.. Be read from a mercury thermometer are less durable because mercury does not react quickly to temperature changes nor! The mercury-in-glass thermometer ” by Jurii – ( CC by 3.0 ) via Commons Wikimedia.. The space of the liquid inside the bulb 0C ) '' Same laboratory thermometers alcohol.

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