Alcohol thermometers: overview of manufacturers and the best models

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2018-03-24 12:40:15

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Now all known spirit thermometers. How they originated, what kinds of the instruments exist in this time and how are they used?

The prototype of the modern thermometer

It is believed that the father of the thermometer was Galileo Galilei. At the end of the XVI century he created a kind of modern instrument called a thermoscope. It consisted of flasks and glass tubes and was designed to determine whether changes in water temperature. The scale of this instrument was not. So, to know how much it has changed, it was not possible.

Then the device is improved by adding the scale of the beads, removed the air, turned a ball-cones up. Finally the water was replaced with ethyl alcohol. Did the Florentine Torricelli. Innovation allowed measurements in the freezing weather. Because water when it freezes is not only moved along the scale. Himself a glass vessel burst and fell into disrepair. In addition, an alcohol thermometer is not dependent on atmospheric pressure. Some of the Florentine thermometers have survived and are in the Museum of Galileo.

The Division is applied to the tube the heated enamel, dozens of white, the rest black. The range was usually from -10 to +40. The tube was filled with alcohol and sealed with wax. Alcohol thermometers one wizard showed the same value under equal conditions. But dividing each master was different. When trying to divide the scale into 100 or more parts to the same value failed.

alcohol thermometers

To Fill the thermometer with mercury invented G. Fahrenheit. It recorded on a scale the freezing point of the salt solution, 32 degrees Fahrenheit 96 degrees – body temperature, 212 freezing water. This thermometer was used until the mid-twentieth century, and in the United States continue to apply now.

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Improvement of the thermometer

At the beginning of the XVIII century Gilliom Amontons changed the measurement system. The Frenchman who invented the alcohol thermometer, followed the change of elasticity of the air, not paying attention to the pressure. In this case, the zero of the scale was the temperature, now called the absolute zero. Another strong point in the thermometer was the temperature of boiling water. But the Frenchman who invented the alcohol thermometer, did not take into account the influence of atmospheric pressure on the boiling point of water.

a Frenchman who invented a alcohol thermometer

That was the siphon barometer with open knee, pointing up. The bottom was a solution of potash, and the top oil. The tank was sealed.

The Scale of temperature measurement

This device is not very similar to modern alcohol thermometers to measure temperature. At this time, many scientists worked to create their own or improve the existing models.

Improved device another Frenchman. Alcohol thermometer Reaumur had a scale from 0 to 80 degrees. The ice it melted at 0 degrees and water boiling at 80. He realized that mercury and alcohol expand in different ways, because the scale for temperature needs to be varied. But the thermometers were large and inconvenient to use.

alcohol thermometer to 100 degrees

From the middle of XVIII century to the XX made several important discoveries. The Swede Anders Celsius accurately determined the boiling point of water zero and the freezing-point of 100. It turned out that the atmospheric pressure depends only on the boiling point of ice, and freezing it has no effect. Therefore, the division was located.

Accurate data about who exactly turned the scale of “up”, no. Some say that it has made itself Celsius. Other researchers attribute the change in the direction of the scale Carl Linnaeus or Morten Stremer.

The British scientist Kelvin (William Thomson) created the absolute temperature scale from absolute zero, Celsius is -273,15 degrees.

In the eighteenth century alcohol thermometers were widely distributed in Europe. They were sold along with other goods. At that time, temperature scales was already known 19. So, M. Lomonosov was offered with 150, and Lambert – scale with 375 divisions, each of which was equal to a thousandth part of the expansion of air.

The eighteenth century were marked by significant discoveries in the field of elaboration and improvement of measuring instruments, including alcohol thermometers.

At the end of XX century began to appear new directions and devices based on other principles.

Types of thermometers

  • Liquid.
  • Mechanical act on the same principle, but instead of the liquid used bimetallic strip or helix.
  • E-use the resistance change of a metal under the influence of temperature. As a guide use a platinum wire or coated ceramics. Measure from -200°C to 850°C.
  • Optical based on the level change of a spectrum or other parameters. These include infrared temperature measuring body, operating without human contact.
  • Gas actuated thermometers expansion, pyrometric, thermoelectric.

Technical thermometers

These include devices based on all types of measurements. They are characterized by high adaptability to the conditions of use. It is an agricultural, vibration-resistant and nizkogradusnoyi for spetskamerah, oil products and laboratory. They are used for installation in pipelinesvarious storage tanks, chemical and food industry, in particular, in the processing of beet into sugar.

French alcohol thermometer

Use them in private houses to control the temperature in different containers.

They can be vertical, and angled. The name depends on the type of the bottom: straight or angle it.

The Principle of operation technical alcohol thermometers based on the fact that the working solution expands or shrinks under the influence of temperature.

Before purchasing this measuring instrument need to be familiar with its characteristics.

Technical alcohol Thermometer can measure temperatures from -70°C to 600°C.

thermometer alcohol technical

Alcohol Thermometer to 100 degrees is not suitable for canning. So, the jam is ready when its temperature reaches 106°C. it will Help to measure her alcohol thermometer for canning TK-1 ILAC-110 to the metal case.

The content of the thermometers

Liquid thermometers used to be filled with mercury and alcohol. But mercury vapor is very dangerous for the body. They are formed, if you break the thermometer. Now, therefore, mercury thermometers are not used.

Outdoor thermometers

Now the large street alcohol thermometers are becoming popular. Their length can reach 80cm or more. They can decorate a wall, office, shop or Bank. The rim of precious wood, plastic or metal that looks rich and original. The scale of ceramic granite is durable and reliable.

alcohol thermometers to measure temperature

This street alcohol thermometer measures temperatures from -53°51°C.

Thermometer "Grape leaves" of the German company TFA Dostmann GmbH made of wrought iron. Can be used as external or internal. Length 385 cm

Of the German companies can be called Moller-Therm GmbH. They manufacture interior thermometers high quality. The warranty on them – 2 years.

Often used homemade outdoor thermometers are small in size. They are attached to the window with Velcro or to the wooden parts of Windows and doors with screws. Popular two-way street alcohol thermometers Velcro with a scale that is visible through the glass window. Because in order to know the temperature outside, no need to leave the apartment. One of the producers - it is an (Russia).

There are models with a plastic case.

Temperature Measurement of water

Alcohol thermometer can measure the temperature of the water in the tub for bathing the child. To do this, it needs to be supapan in a plastic case.

 can alcohol thermometer

Many people wonder if alcohol thermometer to measure the temperature of the water that boils? No, because alcohol boils at a lower temperature than water. But there are specially calibrated and sealed thermometers, which allow you to do this. Therefore, use an alcohol thermometer to 100 degrees Celsius. And for temperatures below zero it was a better choice than mercury. Because mercury freezes at 39 degrees below zero. While alcohol can measure temperatures up to 70 degrees of frost.


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DE: https://tostpost.com/de/gem-tlichkeit/17089-alkohol-thermometer-bersicht-der-hersteller-und-die-besten-modelle.html

ES: https://tostpost.com/es/la-comodidad-del-hogar/17100-term-metros-de-alcohol-una-revisi-n-de-los-productores-y-de-los-mejore.html

KK: https://tostpost.com/kk/domashniy-uyut/17073-spirtt-termometrler-sholu-nd-rush-ler-men-zd-k-lg-ler.html

PL: https://tostpost.com/pl/komfort-domu/17056-alkoholu-termometry-przegl-d-producent-w-i-najlepszych-modeli.html

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UK: https://tostpost.com/uk/domashn-y-zatishok/17074-spirtov-termometri-oglyad-virobnik-v-kraschih-modeley.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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