The mercury-in-glass or mercury thermometer is a thermometer that uses the thermal expansion and contraction of liquid mercury to indicate the temperature. Construction. A basic mercury thermometer is a precisely crafted piece of tube-shaped glass enveloping a mercury-filled reservoir connected to an extremely thin channel, ...

2024年11月27日 · In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.

Mercury is the traditional fluid used for thermometers and other indicating instruments. Its properties are well-known and understood. Some published test methods specify the use of mercury-in-glass thermometers, but many of these standards are being revised to avoid problems related to their use.

Mercury thermometers | Mercury in glass Thermometer: Daniel Gabriel Fahrenheit, a German-born physicist, invented Mercury thermometers. It is made up of liquid mercury that is placed inside a glass tube. There are calibrated markers on the glass tube’s body that make it easier to interpret the temperature.

Mercury-in-glass thermometer for measurement of room temperature. The mercury-in-glass thermometer was invented by Daniel Gabriel Fahrenheit in Amsterdam (1714). It is 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. The volume of mercury changes slightly with …

Mercury-in-glass thermometer 2 These points are adequate for approximate calibration but both vary with atmospheric pressure. Nowadays, the triple point of water is used instead (the triple point occurs at 273.16 kelvins (K), 0.01 °C). Maximum thermometer A medical mercury-in-glass maximum thermometer showing the temperature of 38.7 ºC.

2017年4月24日 · Mercury has been frequently used in thermometers because it remains in liquid form throughout a wide range of temperatures: -37.89 degrees Fahrenheit to 674.06 degrees Fahrenheit. In a thermometer, a glass bulb attached to a glass capillary tube is filled with mercury. The rest of the tube may be a vacuum, or it may be filled with nitrogen.

A mercury-in-glass thermometer is a thermometer that provides temperature readings through the expansion and contraction of mercury inside a calibrated tube. These devices were used extensively to measure temperatures in a wide variety of settings from the 1700s until the 20th century, when concerns about the health risks of mercury exposure ...

2018年6月26日 · Thermometers have myriad uses in science, engineering, industry, medical facilities and daily living. Thermometers come in several types, but the liquid-in-glass mercury thermometer is one of the most well-known. The operation of the mercury thermometer is simple to understand once all of the different parts are identified.

Liquid in Glass Thermometers, Thermco ASTM Thermometers. Add To Compare. Find a Distributor. CALL: (973) 300-9100 9am to 5pm est. ASTM – Hg Thermometers (Mercury) Listed are made in accordance with specifications of the American Society for Testing and Material. Strict manufacturing procedures and quality controls insure full compliance to ...