Best electronic thermometer for measuring body temperature: selecting features

Design and operation of an electronic thermometer

Almost every person in the home medicine cabinet has a mercury thermometer, which is called a thermometer. This device, by which to measure body temperature.

The prevalence of this type has been due to several factors, among the former are the simplicity of use and accuracy of the data obtained. In this mercury thermometer does not require power, and also has, thanks to a special device with capillary active substance in the memory the maximum measured temperature.

The most important drawback of this type thermometers is the presence of mercury within the - very toxic chemical that requires some care during operation.

Development of scientific and technological progress has led to the emergence of a qualitatively different type of measuring equipment - electronic thermometers. This device has a number of advantages in comparison with the mercury counterparts, foremost of which is its complete security.

The physical meaning of the temperature measurement by the electronic device is receiving a potential difference when changing the indicator. For this purpose, resistors or transistors are sensitive to the temperature inside the measurement unit. The principle of operation is to establish the dependence of the resistance of the material used as the sensor of temperature fluctuations.

In most cases, metal heating elements are made of silicon, which allows to measure the temperatures up to 125 ° C. This is enough for home and medical use. In other cases, if required to achieve a broader spectrum requires the use of other materials, such as platinum can withstand higher heat.

In addition to direct probe coated with a metal tip, a device body is mounted electronic display, which displays the measurement results for ease of reading.

Turning on and off of the device by a special key, whereby the latter can also reset the value (mercury falls to zero shaking). Powered electronic device with batteries of 1.5 V.

Types of electronic thermometers

Modern pharmacies and shops for the sale of medical equipment offer several options for electronic devices. The choice of the model will depend on the patient's age, its condition and the available space for the installation of the device.

Conventional classical thermometers

The very first group of devices are classical thermometers having elongated shape. The elongate tip with a metal probe, which are contained within the thermistors thin shape necessary for containing the desired location on the body where it is required to fix temperature. Further, in the thickest part of the board is located, and batteries, as well as the power button on or off.

These devices are used to measure the oral or rectal temperature, and can be used adults, but are not the most comfortable for the monitoring indicators in young children or babies. For them are slightly different modifications.

Thermometer pacifier for kids

For children under 3 years old use the upgraded form of a digital thermometer that their appearance resembles the nipple. Since generally elongated thermometer may be the cause of discomfort, this method of measuring body temperature in children and could cause inaccurate performance.

In appearance, this device is almost indistinguishable from the classic Dummy but is not intended to Use as nipples on a regular basis as part of the silicone deteriorating rapidly due prolonged sucking. The weight of the thermometer does not exceed 40 g, and he is made of waterproof material, which ensures complete safety during use.

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infrared thermometers

Another group of devices for measuring temperature are infrared models that measure the desired parameter without directly contact with the patient's body.

The operating principle of these devices is constructed on the capture of thermal waves emitted by any living being heated or subject. By itself, the device resembles a small gun, the front part of which has a sensor and is displayed on the scoreboard with indicators of him on the back.

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Advantages and disadvantages

Any technically complex device has positive and negative sides, which may be related to the design and principle of operation. Electronic thermometers also have pros and cons.

Among the advantages that make this class of devices is much easier outdated mercury thermometer, are:

The disadvantages of this type of measuring devices are the following:

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How to choose an electronic thermometer

When choosing an electronic model should provide a number of important parameters that must be addressed attention to eventually get the device, e perform their functions at all times operation:

1. Display. It is very important when buying pay attention to the size of the display and indicators displayed on it, so that they are easy to read. Also, no harm will be the choice of the model with the presence of the backlight. Some thermometers further Displays the battery charge level, which is useful for monitoring the status of the battery.
2. Tip. In most cases, all the models of electronic thermometers have the same tip structure, which is a metal probe with hidden inside resistors. Some species have a flexible tip, easy to measure body temperature in young children who can not sit still.
   

   Plastic holder is a method of protecting from damage thermometer

3. The presence of built-in memory. In some cases tracking the dynamics of the disease with the fixing temperature for several days. For these purposes it is better to purchase the device with a memory function that allows to fix the figures obtained.
4. O Time Result. It is important to pay attention to the time in which is possible to obtain a reliable measurement results. As a rule, the classic thermometer can issue rate one minute after the start of measurement. If an adult can safely sit out even longer, to control the temperature of the child need to choose the model, offering the fastest get the desired setting.
5. power supplies. You must make sure before buying that the model suggests the possibility of replacing the battery. Some unscrupulous manufacturers make non-removable power elements. In this case, after the battery life the device can be simply discarded.
6. Strength and tightness. Another important parameter is a waterproof device that allows you to wash the thermometer or hold it disinfected. It is also important to look at the quality of plastic, the device must be resistant to falls and other mechanical damage.

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Terms of Use at the place of application

There are several ways to control the body temperature by the electronic device. Depending on the chosen method requires compliance with certain rules to obtain the correct result.

orally

Way to quickly get the right performance. Secure data can be obtained immediately after the chime. It occurs in 30-60 seconds after the start of the process. Before using oral thermometer are advised to refrain from eating and drinking.

rectally

Method relating to the most accurate, since the index parameter obtained in the rectum as close to the same values ​​to the internal organs.

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To properly use a thermometer rectally need to follow some guidelines to help in the first place, to avoid discomfort:

1. tip of the thermometer before using it with petroleum jelly or butter.
2. The correct posture for an adult will be the situation on the side, and for the child - on her stomach.
3. Before the introduction of the instrument into the rectum it is necessary to pre-activate.
4. The tip should be administered to a depth of no more than 3 cm, while holding the device itself forefinger and middle finger.
5. It is recommended to compress the buttocks during the procedure to prevent the ingress of cold air.

In the armpit

The classic way, which requires a longer time to obtain the correct result. A feature of this method is the dense pressing the tip to the body, adjoined to the sensor as close as possible to the skin surface. Also in the measurement in the armpit after the beep recommended withstand thermometer for at least a minute to determine a final figure.

Ranking of the best models of electronic thermometers

On the market you can find a wide variety of device models to check the body temperature. Among them are low-cost and high-quality models of unknown brands, but also have their leaders, who have gained popularity due to the convenience and functionality.

OMRON Eco Temp Basic (MC-246-RU)

A simple model that has a minimum of additional options, what indicates the presence of the word «Basic» in the title. In the manufacture of the thermometer uses an environmentally friendly high-strength plastic. Deviation is less than 0,1 ° C. device body is not afraid of moisture, has memory, auto power off function. With the included plastic case. The cost model is 360 rubles.

Thermometer OMRON Eco Temp Basic

B.Well WT-03

Another simple model of the famous brand, which offers a memory function of the last result. Housing material - high-quality and durable plastic that is resistant to moisture. Use the device can be by any known means: rectal, oral and axillary. On completion of the measurement audio signal is heard. There is an automatic shutdown option. Standard error of - 0,1 ° C. The cost of the device is 179 rubles.

Thermometer B.Well WT-03

A & D DT-501

Model of the famous Japanese brand, which produces low-cost, but very high quality medical equipment. Product quality is checked directly at the factory. This thermometer is considered as a leader in its price segment. In the presence of all the options: automatic shutdown, the last measurement memory, protection against moisture. Accuracy is 0,1 ° C. Time to establish reliable readings - 1 minute. The cost of the thermometer is 217 rubles.

Thermometer A & D DT-501

Microlife MT 167

Universal model has a flexible tip that allows you to apply it in different situations. Thermometer is made of durable plastic, it has an auto-off function. The set comes case. Deviation is less than 0,1 ° C. unit price starts from 260 rubles.

Thermometer Microlife MT 167

LAICA MD6082

Model thermometer, which is distinguished by an optimal balance of cost and quality of manufacturing. The device has a memory option recent results shuts off after 10 minutes of non-use, gives audio notification of completion of measurement. Also, as an option, can be noted the presence of the backlight. The material of manufacture is a durable plastic, which is able to withstand exposure to moisture. Measurement error is stable and 0,1 ° C. With the included protective case. Product cost is 420 rubles.

Thermometer LAICA MD6082

The acquisition of the electronic thermometer to measure the temperature may be regarded as justified step, as it allows get a modern device that provides accurate indicators and refers to a completely secure means of diagnostics. More time to learn the ins and outs of this type of device can be presented.