https://www.nist.gov/pml/mercury-thermometer-alternatives/mercury-thermometer-alternatives-advantages-changing. As far as affordable thermometers go, the mercury thermometer is the most accurate and has several other advantages over alcohol-based thermometers. How long will the footprints on the moon last? Advantages & Disadvantages of Mercury Thermometers Mercury thermometers are inexpensive, durable and accurate. Metallic mercury in its liquid state is relatively harmless when confined. Shiny con, Three advantages of using mercury in thermometer. 5 ways to teach you how to use thermocouples correctly? Thermocouples are usually used where quick response is required. Alcohol (also called spirit-filled) thermometers are inexpensive but they also break very easily. It consists of a bulb containing mercury attached to a glass tube of narrow diameter; the volume of mercury in the tube is much less than the volume in the bulb. A lock ( LockA locked padlock Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Thermocouple is environment friendly while mercury in mercury in glass thermometer is highly toxic to the environment. When it comes to thermometers, like most things, you get what you pay for. 1. When did the Ancient Egyptians start believing in the afterlife? My elders, and they at that time, most of them in the use of mercury thermometer, it is a kind of expansion type thermometer, use it to measure temperature, not only is simple and intuitive, but also can avoid external remote transmission error of the thermometer. All thermometers work on the principle that warm fluids... What Are The Uses Of Six's Maximum And Minimum Thermometer? Share sensitive information only on official, secure websites. Alcohol thermometers, on the other hand, tend to have a lower conductivity while wetting the walls of the device. Digital technology offers many other benefits for commercial and industrial users, including fast equilibration and response times (often less than 1 second) as well as expanded temperature range. Mercury has a low freezing point relative to alcohol (- 3.89 degrees C centigrade, 25 degrees F) and as a result it cannot be used in colder areas. Despite this wide range, the amount that mercury expands is eight times less than alcohol, which allows mercury thermometers to be made smaller and more compact than alcohol thermometers. What you mean by the historical term 'contact'? I guess so! The thermometer is among the most extensively used medical equipment worldwide. The thread of the thermometer is quite fragile, and when it breaks it is nearly impossible to rejoin. Because of sensitivity of temperature, high thermal conductivity, low thermal capacity, good visibility and non-wetting of the internal capillary walls of the thermometer, mercury is typically a very accurate gauge of temperature. Webmaster | Contact Us | Our Other Offices. It also permits a wider variety of data recording, display, and storage options than is possible with most traditional Hg thermometers. -generates low signal which is non-linear In addition, digital thermometers are adaptable to a wide variety of measurement environments and offer a considerable range of choice in probe designs, sizes and configurations to accommodate different tasks. Mercury is sealed in a glass tube and graduation marks are etched in the glass. If you are 13 years old when were you born? Can You Give Some Suggestions About A Nice Social Site Where Our All Old Friends Can Form A Group To Keep In Touch? Advantages Talk about the advantages and disadvantages of mercury thermometers. Mercury is difficult to clean and it can easily contaminate other surfaces after a thermometer breaks. Copyright © 2019 Shanghai Jiutian Automation Equipment Co., Ltd. | All Rights Reserved. The disadvantages includes, it... What Is The Principle Of How A Mercury Thermometer Works? Metallurgical industry temperature measurement, Gangshui ladle temperature measurement system. Ask a Question. 5. And if the mercury into the man's blood, can lead to mercury poisoning. Created December 14, 2011, Updated December 10, 2019, Manufacturing Extension Partnership (MEP), Mercury Thermometer Alternatives: Advantages of Changing, Mercury Thermometer Alternatives: Hg Alternatives, Mercury Thermometer Alternatives: Platinum Resistance Thermometers (PRTs), Mercury Thermometer Alternatives: Promoting alternatives to mercury thermometers, Mercury Thermometer Alternatives: Sample Applications, Mercury Thermometer Alternatives: Selecting an Alternative, Mercury Thermometer Alternatives: Thermistor, Mercury Thermometer Alternatives: Thermocouple, Mercury Thermometer Alternatives: Training, Mercury Thermometer Alternatives: Verification Methods for Alternative Thermometers. Because the structure of glass is dense, mercury's performance is very stable, so the mercury thermometer is accurate and value for the characteristics of high stability, and the advantages of low cost, no external power supply, trusted by the people, especially the medical workers. What do you wear when you are home alone? Secure .gov websites use HTTPS The Company Held New Year's Day New Year Event. When it comes to thermometers, like most things, you get what you pay for. Digital data can be conveniently (even automatically) recorded in electronic form, and displayed in any desired format on a computer. does not work below -39 0C (Hg freezing pount) accurate. Within appropriate tolerance bands, changing the probe does not typically require any recalibration or adjustment of the thermometer. What Is a normal temperature under the arm? This can make the thermometer show the results more slowly and less accurately. An official website of the United States government. ) or https:// means you've safely connected to the .gov website. Alcohol (also called spirit-filled) thermometers are inexpensive but they also break very easily. It consists of a bulb containing mercury attached to a glass tube of narrow diameter; the volume of mercury in the tube is much less than the volume in the bulb. In which place the raw silk factories in tajikistan? Below we to say the advantages and disadvantages of mercury thermometer, mercury thermometer advantages: the most common form of thermometer is the mercury thermometer, it can keep up with the mercury in the body temperature of the original position, facilitate users observed at any time. Measurement time is longer, reading more trouble, etc. display is harder to read. It has high cubical expansion Below we to say the advantages and disadvantages of mercury thermometer, mercury thermometer advantages: the most common form of thermometer is the mercury thermometer, it can keep up with the mercury in the body temperature of the original position, facilitate users observed at any time. If an extremely accurate reading is not necessary, purchasing an alcohol-based thermometer will be cheaper and less dangerous. Mercury's high boiling point allows it to be used in thermometers that are in steaming hot liquids and other cooking foods. On Nov. 6, 2019, our company are fortunate to follow the Chamber of Commerce to participate in the Cross-Border E-Commerce Development Forum and the Second China International Import Expo. 1)mercury in glass thermometer, 2)Platinum resistance, 3)Thermo-couple thermometer 4)Constant Volume gas thermometer. slow response . Readings from multiple units can be shown side-by-side simultaneously, or compared over time with minimal effort. Different Types Of Thermometers And Their Advantages. High boiling point and very low freezing point But cleaning up a commercial or industrial mercury-thermometer spill can easily entail expenditures of $5,000 to $20,000, not counting lost work time, and costs can be far higher. A related advantage is avoiding the cost of remediation. ○ Add:NO999, Sunqiao RD, Pudong area, Shanghai, China. A broken mercury household fever thermometer is relatively inexpensive to handle, though complicated and demanding for the average citizen. State two advantages of a thermocouple over a mercury in glass thermometer ... Thermocouple has a idea range of temperature compared to mercury in glass thermometer. The mercury-in-glass or mercury thermometer was invented by physicist Daniel Gabriel Fahrenheit in Amsterdam (1714).
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