Mercury thermometers familiar to most, despite their versatility, durability and high measurement accuracy, are losing their positions in the market, giving way to digital options. Modern man is accustomed to simplify any manipulation, including temperature measurement. An electronic thermometer reads information using sensors and displays the readings on the screen, where they are clearly visible even to people with poor eyesight.
The main advantage of the electronic model is the absence of mercury and the inability to break them, which attracts users in the first place, especially if there are children in the house, from whom it is better to keep classic mercury thermometers away. The disadvantages include the risk of breakage, the possibility of inaccurate readings, including through the fault of the user who incorrectly carried out the measurement procedure (you must carefully study the instructions for a particular model).
What to look for when buying:
Devices can remember from one to several recent measurements, which allows you to track temperature changes.
It is better to choose flexible tips, especially if there is a child in the house. They allow the instrument to adjust to the surface, which facilitates the process and helps to obtain more accurate data. Also on sale you can find products with gold plating, which are designed for people who are allergic to metals.
An audible signal indicates the end of the measurement. More advanced versions may beep at elevated body temperature, improper location of the device.
The presence of a protective bag greatly facilitates storage and transportation.
People with visual impairments should choose models with a large screen and a clear display.
It is necessary to find out if the product is designed for disinfection procedures. For adults, this is not so important, but if the purchase is made for a child, it is better to choose a waterproof option that can be disinfected.
There are two types — children and adults. Toddlers can buy a product of bright colors and attractive shapes, so that the measurement process evokes positive emotions. For the little ones, pacifier thermometers are on sale.
It can be replaceable (conventional batteries) and soldered. The latter option is more suitable for small children due to safety (lack of small parts).
Introducing the rating of electronic thermometers 2021. The top 11 models that were selected by our experts based on user reviews and ratings.
|Rating (2020)||Prices, ₽||Country|
|1. B. Well WT-04 Standart||from 230₽||China|
|2. Xiaomi Measuring Electronic Thermometer||from 300₽||China|
|3. B. Well WT-05 accuracy||from 170₽||UK, China|
|4. And DT-501||from 190₽||Japan|
|5. B. Well WT-03 Family||from 180₽||China|
|6. Little Doctor LD-302||from 230₽||China|
|7. Thermoval Standard||from 200₽||Germany|
|8. Omron Eco Temp Basic||from 300₽||China|
|9. Microlife MT 3001||from 170₽||China|
|10. Amrus AMDT-10||from 160₽||USA|
|11. NexTemp on liquid crystals||from 60₽||USA|
: 2–7 thousand rubles
Infrared thermometers allow you to measure temperature without contact with a person or animal. This speeds up the process and reduces the risk of transmission.
An infrared thermometer measures heat radiation from the surface of the human body. The working distance of home models is ‑3–8 cm, thermometers for mass use (industrial pyrometers) “beat” further.
Usually the sensor is directed to the auricle or forehead. The process is somewhat reminiscent of scanning barcodes at the checkout in a supermarket.
Infrared thermometers are now used at airports, train stations and in transport. The result is immediately visible on the LCD screen, so you can quickly identify potentially sick people in the stream.
Infrared thermometers can also measure the temperature of surfaces. Or, for example, hot tea or soup.
But the measurement accuracy will be different: from 0.1–0.4 degrees Celsius for human body temperature to 1–3 degrees for other measurements.
Infrared thermometers from well-known manufacturers of medical equipment are more accurate than the Chinese noname. But gadget manufacturers are also entering the market: for example, Xiaomi with Mi Mijia iHealth.
: 50–300 thousand rubles, rental — 5–10 thousand rubles a day
A thermal imager is a special device that displays a picture of the temperature distribution over a certain surface. This is clearly not a toy for home use, but a military and industrial gadget.
The operation of a thermal imager is based on Planck’s law: all bodies whose temperature is above absolute zero emit thermal electromagnetic radiation. The wavelength of radiation and the spectral density of its power depend on the temperature of the body.
The higher the temperature, the shorter the wavelength. Most of the bodies in the space around us generate a maximum of radiation in the mid-infrared range: in the range from ‑50 to +50 degrees Celsius, wavelengths — 7–14 microns.
The thermal imager displays the temperature map in real time. The distribution of colors depends on the instrument setting.
Usually hot objects are shown in red, cold objects in blue or purple. This is useful when scanning large areas: for example, the “reddest” person in the crowd is potentially infected. There are many models with a black and white screen (white — hot, black — cold).
Theoretically, the real temperature of the object for the thermal imager can be masked. For example, clothing or layers of thermal insulation. This will allow you to give out 37.8 degrees Celsius for 36.6, but not hide in the steppe. Although with the face you still have to do something.
Having decided on the need to purchase a non-contact thermometer, the buyer must remember the following nuances:
- when choosing a device need pay attention to the range, accuracy and memory of measurements;
- in advance costs determine the need to obtain temperature indicators of various objects and air. Many modern models have this capability;
- Auto-off feature helps prolong battery lifetherefore it is better to purchase a device with this program;
- an important role is played by the presence of various sensors and indicators. With them, using a non-contact thermometer will be much more comfortable;
- attention should also be paid to ergonomics, build quality and materials used. It is better to give preference to a model from a trusted developer.
Thermal cameras for smartphones
500–5 thousand rubles
Infrared sensors for microUSB, Lightning and 3.5 mm connectors are offered both on Aliexpress and in gadget and accessory stores. In fact, these are infrared thermometers that measure thermal radiation on the skin and transmit data to a smartphone.
As a rule, the price and accuracy of such accessories are closely related. Before buying, look for reviews and reviews of a particular model.
We have already reviewed some of them.
How to choose a thermometer to measure body temperature?
A thermometer for domestic use is chosen according to several parameters:
- Temperature measurement method. The most popular are thermometers for measuring temperature under the arm, but also rectal and forehead models, although they are not very popular in our country.
- Thermometer type. All devices are divided into analog (mercury) and electronic. The latest devices can be conventional, non-contact and infrared.
- Safety and hygiene. Mercury thermometers are considered the most accurate, but if such a device breaks, all residents will be at risk. Electronic, infrared and contactless devices are considered safer.
What to look for when buying
The issue of buying a thermometer causes difficulties, as it has many nuances and difficulties. As a result, a marriage may be revealed, the price will not correspond to the declared one, or there is no functionality in the device. Let’s go into more detail below.
There are three types of thermometers in stores: mercury, electronic, infrared.
The former are classics for measuring temperature, so they are purchased due to the fact that this is a time-tested specimen. His measurements are usually the most accurate. However, if you break it by negligence, there is a risk of leaving your home and disposing of the metal placer.
Electronic (digital) models are considered the most common, because they allow you to quickly and safely determine body temperature. A high measurement error is associated with non-compliance with the rules of operation. So, the device, for example, must be held not for the declared “60 seconds”, but from 1 to 5 minutes.
Infrared devices are much more expensive than previous thermometers, but allow you to spend a full second on the measurement. In order for the device to work smoothly, its indicators are clear and accurate, you must follow the rules described in the instructions:
- use 30 minutes after eating;
- do not use immediately after exercising in the gym;
- do not take measurements after bath procedures.
For those who can’t see well, the presence of a large backlit display will be a huge plus. It will also help you see the result in the dark.
This feature is useful for any patient who monitors temperature throughout the day. The standard range is from 10 measurements and up.
Possibility of automatic shutdown
Auto-off significantly saves battery consumption and makes it easier to turn off the thermometer.
The presence of sound accompaniment is a mandatory attribute on all electronic devices. You will never need to stand near the dial and count the cherished minutes, as happened before with a mercury thermometer. Sometimes the sound indicator is set not just for the measurement time, but for an elevated temperature.
Such an external device adapts to the shape of the body and allows you to take measurements even in a child.
The water-resistant case helps protect the device from damage when it gets wet. Also, this feature greatly facilitates disinfection.
Availability of replaceable batteries
Additional functionality that is not required for all models. If a child uses a thermometer, then from a safety point of view it is better to buy a soldered model (without the ability to change batteries).
An undoubted advantage for the owner is the presence of a special case, case or cover for comfortable carrying in a bag.
Below, we have made a detailed overview of the very best thermometers by type, appearance, price range and the number of features they contain.
Instructions for use
And finally — a few tips and a brief instruction on the use of an IR thermometer.
An IR thermometer is convenient to measure the temperature of a child
- First of all, carefully read the instructions and follow all the manufacturer’s recommendations, including calibrating the device. That is, you need to measure their body temperature several times.
- If the thermometer was transported along the street, then before starting the measurement, let it stay at room temperature for about 15–30 minutes.
- If the child’s temperature is measured, then the latter needs to be in the room and in a calm state for at least 10 minutes.
- Do not forget to select the desired operating mode after turning on the device.
- Measure the body temperature until the sound signal that the device gives out after the end of work.
- Look at the display and evaluate the results.
- Next, turn off the device or leave it alone until the auto-off moment.
- If you need to measure the temperature again, wait at least one minute after taking the temperature.
- Clean the thermometer sensor after use if it has been in contact with the body.
Rating of the TOP 12 best thermometers 2020–2021 of the year
|TOP 5 best electric thermometers in terms of measurement accuracy|
|one||B.Well WT-03 Family||Ask for a price|
|2||Little Doctor LD-300||Ask for a price|
|3||AND DT-501||Ask for a price|
|four||Omron Eco Temp Basic||Ask for a price|
|5||Xiaomi Measuring Electronic Thermometer||Ask for a price|
|TOP 5 best non-contact thermometers|
|one||B.Well WF-4000||Ask for a price|
|2||Berrcom JXB-178||Ask for a price|
|3||Xiaomi iHealth Meter Thermometer||Ask for a price|
|four||Sensitec NF-3101||Ask for a price|
|5||ELARI SmartCare IRT-01||Ask for a price|
|TOP 2 best infrared thermometers|
|one||B.Well WF-1000||Ask for a price|
|2||AND DT-635||Ask for a price|