Exemplar for Math's, CBSE 9 Math's Notes, Class 9 Sharma Solution, PS Mercury thermometers can be used to determine body, liquid, and vapor temperature. thermometer. 10 Math's Notes, Class Advantages of mercury thermometers: Mercury thermometers provide reliable readings. display is harder to read. It will be very dangerous if broken. When used correctly, the digital thermometer is accurate enough to meet daily needs and safer than the mercury thermometer. Anonymous answered. The resistance temperature characteristics are non linear. Simple working principle. Winner of the Mother and Baby Best Thermometer Award, this device has a built-in flashlight that makes reading easy. Its price is very high. Pros- Mercury thermometers are used to provide exact readings of body temperature. Disadvantages: Mercury is toxic . -It expands uniformly (linear expansion) and responds quickly to temperature changes, hence is sensitive. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Aggarwal solution, RD Its price is very high. There are two general types of mercury thermometers that measure body temperature: Alternatives to mercury fever thermometers, Cleanup and disposal after breaking a thermometer, Learn more about how to tell if there is mercury in your fever thermometer, NISTs February 2011 press release announcing the change, final rule incorporating updated ASTM International (ASTM) standards into EPA regulations (PDF), View a list of the updated ASTM standards, Phasing Out of Mercury Thermometers Used in Industrial and Laboratory Settingspage, specific state laws, resolutions and declarations, What to do when a mercury fever thermometer breaks/spills, How to recycle and dispose of mercury products, Oral/rectal/baby thermometers, containing about 0.61 grams of mercury, Basal temperature thermometers (used to track slight changes in body temperature), containing about 2.25 grams of mercury. The most similar alternatives to mercury fever thermometers are battery- and solar-powered digital thermometers. Advantages of thermocouple. The table below compares the various thermometers. Theory & Notes, Math's 2. Why are thermometers preferred to mercury thermometers? EPA has launched an effort to reduce the use of mercury-filled non-fever thermometers used in industrial settings where suitable alternatives exist. is neither analogue nor digital. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. However, you may visit "Cookie Settings" to provide a controlled consent. are considered as abnormally low. Radiometers are used for remote observations. Solutions for class 9, NCERT Solutions Following are the benefits or advantages of Data Loggers: It can be used in remote or dangerous situations. display is harder to read. Alcohol is transparent and this makes hard to read the thermometer. If there is no liquid in your thermometer, for example, if it uses a metallic strip or coil to measure temperature (like most meat thermometers do), it is not a mercury thermometer. Advantages and Disadvantages of Mercury Thermometers Advantages It is a good conductor of heat and hence, can measure even high temperatures. 2. The average time taken by the digital thermometer to record the temperature was 88.03 seconds (95% CI-54.58 to 121.49).Conclusions: Digital thermometer is as accurate as mercury in glass . Advance previous year papers, NEET Suggest Corrections. What are the advantages and disadvantages of clinical thermometer? Laser thermometers disadvantages. Disadvantages of mercury as a thermometric liquid Advantages of Platinum Resistance thermometer:- 1) High accuracy of measurement . We are not permitting internet traffic to Byjus website from countries within European Union at this time. (c). A minimum-maximum thermometer shows the minimum and maximum temperatures reached in any given period of time Answered In Uncategorized What are the disadvantage and advantage of infrared thermometer? & Reasoning, Class The Price Tends to be Expensive. Sample Papers Math's, CBSE Previous Year Papers, Revision Material Biology, Name Answer (1 of 4): Mercury is dangerous when exposed to any amount. What are the advantages of using mercury in a thermometer instead of water? Requested URL: byjus.com/question-answer/what-are-the-advantages-and-disadvantages-of-using-mercury-in-thermometer-5-marks-1/, User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36. for class 7 Science, RS It is known that the price of an infrared thermometer is indeed more expensive than other types of thermometer. These pros and cons are listed below. It's used in thermometers because it has high coefficient of expansion. A variety of accurate and reliable mercury-free fever thermometers are available at your local pharmacy. It cannot measure very low temperature, because its freezing point is high (-40C) Mercury is poisonous, so it harmful if its tube is broken. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Advantages of Mercury as a thermometric liquid. Advantages of using mercury in a thermometer It is opaque and shining. Mercury thermometers provide accurate temperature readings and can be used orally, rectally, or under the arm. The cookies is used to store the user consent for the cookies in the category "Necessary". Necessary cookies are absolutely essential for the website to function properly. Some states and municipalities have passed laws or ordinances barring the manufacture, sale and/or distribution of mercury fever thermometers. Entrance exam, JEE The cost is very low. If the liquid in the thermometer bulb is any color other than silver, it is not a mercury thermometer. Advantages of mercury as a thermometric liquid. 5 Is a mercury thermometer the most accurate? The data logging can work as per its design. Mercury thermometers are designed utilizing the idea that mercury expands with heat. There are two types of liquid-in-glass thermometers: 1) Mercury-In-Glass Thermometers 2) Alcohol-In-Glass Thermometers. For NEET, Questions class class 6 Math's, Worksheet for Disadvantages of Mercury: It cannot measure very low temperature, because its freezing point is high (-40C) Mercury is poisonous, so it harmful if its tube is broken. These can all be used orally, rectally, or in the armpit. smartech('create', 'ADGMOT35CHFLVDHBJNIG50K96924VTU0A9D6T0V8SJJV89KVC9EG'); Advantages: Small size Very high sensitivity (Select range) Polarity insensitive No cold junction compensation Wide selection of sensors A clinical or medical thermometer is a thermometer used to measure human body temperature. The cookie is used to store the user consent for the cookies in the category "Analytics". How many babies did Elizabeth of York have? The true or accurate temperature could be secured if the laser thermometer is directed at the right object . Aggarwal Solutions for Math's, Worksheet for Math's Solutions, Worksheet for Questions Science with Answers, CBSE For more information about phasing out industrial mercury thermometers, visit EPA's Phasing Out of Mercury Thermometers Used in Industrial and Laboratory Settingspage. -It does not wet (cling to the sides of) the tube. . formulas, Math's . glass tube with the readings/markings etched into the glass so it Quiz for Class 6 Math's, Online mercury thermometers are not allowed on aircraft. -It has a high freezing point therefore it cannot be used in 8 Math Notes, Class 8 Class 12, Maths Previous year Papers, HC Verma Infrared thermometer. In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. Water won't work for that but you make one of those u tube manometers, use something safe for . -It is a good conductor of heat and therefore the whole liquid reaches the temperature of the surroundings quickly. -It does not wet (cling to. Advantages of mercury as a thermometric liquid. Most made in the 20th century are mercury-in-glass thermometers. It has a wide temperature range between to degree Celsius. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. -It does not wet (cling to the sides of) the tube. Is not the advantage of using mercury in thermometer? It is an opaque shiny liquid which can be easily detectable through the glass of the thermometer. Which is better digital or mercury thermometer? Verma & VK Agarwal Biology Solutions, Lakhmir /* MARKETING SCRIPT */?> It has a wide range of temperature expansion. your Doubts, Class If the liquid in your thermometer bulb is silver, then the liquid might be: A non-toxic compound that looks similar to mercury, Polychlorinated biphenyl (PCB) waste disposal. Questions Chemistry, Important 10 Geography, History Class A .gov website belongs to an official government organization in the United States. You also have the option to opt-out of these cookies. But mercury thermometers also have real advantages over the alternatives. The following are some of the disadvantages, including: 1. 2) Measurements of temperature can be made over a wide range of temperature i.e. temperature, while an alcohol-in-glass thermometer can only slowly The disadvantage is they do not flatter the human skin color thereby making them not an ideal . Mercury is easily the best liquid to use, for 5 important reasons. Mercury-in-glass thermometers are simple to use and read. -It does not wet (cling to the sides of) the tube. Some equipments log data 24 hours a day and 365 days of year while some logs data only during its predefined period. Board Details, MP Board of Secondary It expands linearly and less than alcohol and any other liquid. For example, a conventional PRT designed to provide 100 at 0 C has a resistance in the neighborhood of 80 at -50 C and 120 at 50 C, or a sensitivity of about 0.4 per degree. As a result of the EUs General Data Protection Regulation (GDPR). ii) Mercury thermometer cannot be used in very cold regions like arctic regions because it freezes below a temperature of 39o C. The battery is a button-cell battery and may contain a small amount of mercury, so it should be recycled with a hazardous waste collection program. -It is a good conductor of heat and therefore the whole liquid Advantages: Disadvantages: Mercury thermometer: Cheap: Display is harder to read: Durable: Does not work below -39 0 C (Hg freezing pount) Accurate: Cannot be used for thermograph: Easily calibrated: Slow response : Fragile : Mercury vapour is poisonous: Alcohol thermometer (compared to a mercury thermometer) As they become suspended in the air, the molecules draw some of the heat from the hotter air, cooling it down as the water and air find equilibrium. Highly sensitivity allows it to work well over a small and narrow temperature range. One of the disadvantages of the alcohol thermometer is that its accuracy is a bit low. Common household uses of mercury thermometers include fever thermometers and oven, candy, and meat thermometers. This cookie is set by GDPR Cookie Consent plugin. Important Questions Math's pdf, MCQ State Board, Telangana Board of The Weaknesses or the disadvantages of Mercury: It cannot measure very low temperature, because its freezing point is high (-40C) Mercury is poisonous, so it harmful if its tube is broken. If you break a thermometer while using it or if you improperly dispose of it, the thermometer will release mercury vapors that are harmful to human and ecological health. The traditional mercury thermometer has the mercury in a narrow Board, Online Disadvantages of thermocouples: Temperature measurement with a thermocouple involves the measurement of two temperatures, the junction. What are advantages and disadvantages of mercury thermometer? A mercury-in-glass thermometer can quickly response to What to do if a mercury thermometer breaks. capabilities, which is why we create such a wonderful and It is opaque and shiny. 8 Biology Notes, Class Medical Exam, Olympiads Advantages: Greatest working range of temperature (- 268 o C to 760 o C) No head or elevation effect Disadvantages: Larger bulb size Class IV (Mercury Filled) - These thermometer is similar to liquid filled thermometer but is only filled with Mercury as instead of different kind of liquid. The disadvantages of mercury as thermometric liquid are: i) its temperature coefficient of expansion is very low and it cannot be used to measure the temperature below -39C and above 357C. 4. These cookies will be stored in your browser only with your consent. Hence, the slightest change in temperature is notable when its used in a thermometer. some also contain alchohol but not many due to its thermometers. Agarwal's solutions, RD Singh physics solutions, Lakhmir (down to -115 0C, the freezing point of alcohol; and its boiling Alcohol Thermometer This thermometer is similar to a mercury thermometer, except that the filler in this thermometer is alcohol. They are accurate and sensitive, having a narrow place where the mercury level rises very fast. Get your custom essay on. Advantages of thermistor The benefits of the thermistor are: Thermistor has a compact size. Solution for Science, Worksheet for Infrared thermometer facilitates temperature measurement from a distance without contact . Mercury thermometers can be used to determine body, liquid, and vapor temperature. Physics Notes, Class Advantages of mercury as a thermometric liquid. Mercury has a high boiling . Advantages of Thermocouple: They are capable of being used to directly measure temperatures up to 2600C; and The junction of the thermocouple can be grounded and brought into direct contact with the measured material. 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