Термометры хорошо знакомы практически каждому to a person as means that give information about temperature conditions in one or another environment. Despite the simplicity of the task, manufacturers produce this device in different variations, different structural device and performance.
Modern thermometer is ergonomicmeasuring device, which in a user-friendly form represents the climatic indicators of the target environment. At least, the developers of this device are striving for this perception of their products.
General information about thermometers
Outwardly, most of the measuring tools of thisType is a small device, the filling of which is focused on fixing a certain kind of oscillations of a sensitive element. A classic example is an oblong liquid tube encased in a glass case. People call it a thermometer. It can be used both for medical purposes and for tracking outdoor temperature. In this case, the principle of measurement is based on the ability of the liquid to expand under the influence of heat. Popular and electronic thermometer. This is also a compact device that records temperature readings due to a sensitive element in the form of a sensor. Such models lose mercury counterparts due to a high degree of error, but they are completely safe and convenient to use.
Thermometer classification
There are many parameters by whichthermometers are divided, and the above representatives of this group of measuring devices illustrate only two examples of their performance. One of the main classifications is the division by working environment. Thermometers can be found on the market, aimed at measuring in air, soil, water, living bodies, etc. According to the principle of operation of a sensitive element, one can distinguish traditional liquid, electronic, gas and mechanical devices. The more modern are infrared, digital and optical devices. It is important not to forget that the measuring instrument must not only record values in a certain way, but also provide them in one form or another. In this sense, a thermometer is an apparatus that reflects temperature indicators in the form of a scale or by means of an electronic display. Digital models are gradually replacing counterparts with a mechanical way of presenting data, but they lose in terms of accuracy of readings.
Water thermometers
Such models are called aquarium.thermometers, with the help of them, the user can assess the temperature in the aquatic environment. Devices of this type are in two versions. A more common water thermometer is a liquid-type device, in which alcohol acts instead of mercury as an indicator. Since the measurement technique involves immersion in the middle layers of water, hazardous toxic substances in liquid models are not used.
The second version of water thermometers isis an invoice adhesive machine. That is, it is not immersed directly in the medium, but is fixed on the wall of the tank. The principle of measurement is based on the properties of certain substances in a liquid to change their qualities depending on the intensity of heating. An adhesive thermometer for water is provided with a thermochemical paint, presented in the form of a temperature scale. The advantages of this type of device include mechanical stability, flexibility in installation and safety. However, this thermometer is not capable of providing high measurement accuracy - especially if there are active heat sources near the water tank.
Gauge thermometer
This is a separate group of instruments for measuringtemperature, the principle of action of which is associated with the fixation of pressure in a particular substance or medium. Actually, the pressure change under the action of temperature and performs the function of a sensitive element. Another thing is that the pressure itself is recorded and converted to a temperature scale after measurement through a complex device pressure gauge. Usually for this purpose a system is used with the integration of the immersed sensing element, the tubular spring and the capillary wire. Depending on temperature fluctuations, a pressure change occurs in the target object to be immersed. The slightest deviation in the index reflects the manometric thermometer through a switch mechanism. According to the type of working substance, gas, condensation and liquid devices are distinguished.
Multifunctional thermometers
In a sense, to this group of thermometerscan be attributed to the above manometric apparatus. It allows you to get not one, but several measured values - in particular, pressure and temperature. However, gauge instruments most often use the principle of measuring pressure only as an auxiliary operation for fixing the main indicator in the form of temperature. Full-featured multifunction devices allow you to track several indicators separately, including the same pressure, humidity and even wind speed. This is a kind of meteorological station, which provides a barometer, thermometer, hygrometer and other measuring components.
As a rule, such complexes are used by anglers,travelers and employees of specialized enterprises whose work depends on external conditions. The stations are also mechanical and electronic, which determines their accuracy and ease of operation.
Remote Sensor Thermometer
These devices requirespecial conductor, which is transmitted information obtained through a sensitive sensor. That is, the basis of the device is a panel with an interface and a display by which the user learns about the temperature indicators. And the sensor, in turn, can be placed directly in the target environment. Such models are usually used to determine the temperature in the same aquarium or on the street. In this case, a thermometer with a sensor can also work wirelessly. In this case, the sensor itself will be more massive, since its power supply will require a special niche for the battery or batteries.
Reviews of manufacturers of thermometers
The most technologically advanced, accurate and reliableExploitation models are offered by manufacturers Bosch, Dewalt, Ryobi, Stanley, etc. This product is used by ordinary consumers for private needs and specialists. However, for professional tasks, products of companies that purposefully develop measuring equipment are recommended. The most trusted firms are ADA, Mastech, Fluke and Testo. Domestic manufacturer Megeon also produces a high-quality thermometer, reviews of which emphasize fairly high accuracy and ease of use. In addition, the models of this line are much cheaper - the average cost is 2-3 thousand rubles.
Conclusion
Choosing the right thermometer model canIt may seem difficult if you dive into the market assortment without a clear understanding of the tasks that the device should perform in a particular case. Before buying, it is important to know in what conditions the device will work, what accuracy is required of it, what threats it should protect against, and what additional functions it should have.
For example, outdoor multifunctional thermometer- this is not just a temperature recorder, but also a means of transmitting climate data to a computer. Moreover, as already noted, in addition to temperature, data on pressure, humidity and wind speed can also be transmitted. All that is required of the user is to correctly install the device and correctly organize its operation, which will make it possible to count on obtaining more accurate information.
