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When we have a cold and fever, we need to measure the body temperature to determine the degree of fever. So, what kinds of thermometers are there? How to use non-contact infrared thermometer?



What are the different types of thermometer?

At present, there are three common thermometers: mercury thermometer, electronic thermometer, infrared non-contact thermometer.

Mercury thermometer, as the body temperature increases, the height of the mercury column will rise, which is convenient for users to observe at any time. Due to the dense structure of glass, the performance of mercury is very stable.



Digital thermometers are regarded as the fastest and most accurate type of thermometer. Readings are taken from under the tongue, from the rectum or under the armpit. The electronic thermometer shows the body temperature in digital form, the reading is clear and easy to carry.



Infrared forehead thermometer is the non-contact measurement of human body temperature through infrared rays.Just point the probe to the forehead or the skin of the part to be measured,press the measurement button, and the measurement data can be obtained in a few seconds. Because it is simple and fast, it is very suitable for acutely ill patients, the elderly, infants and young children.




How to take temperature with thermometer?

How to use the mercury thermometer:

1. If the mercury thermometer is not used by yourself, wipe it with alcohol cotton and then dry it.

2. Reduce the mercury in the mercury thermometer to below 35 degrees.

3. The mercury thermometer is placed under the armpit and clamped. Note that the mercury needs to be in the middle of the armpit.

4. Do not loosen the arm when clamping.

5. After measuring, take out the mercury thermometer to see the result,and then cleaning.



The use of electronic thermometers:

1. Before using the thermometer, the head of the thermometer should be disinfected with alcohol.

2. Press the switch, the buzzer will beep immediately, the display is shown temperature, the time is about 2 seconds.

3. Use a thermometer to measure body temperature. The temperature value displayed when measuring body temperature gradually rises, while the symbol keeps flashing.

4. When the temperature change is less than 0.1 within 16 seconds, the symbol stops flashing and the thermometer emits a beeping sound for about 5 seconds. At this time, the thermometer is measured and the displayed temperature value can be read.



How to use an infrared forehead temperature gun

1. The first step is to check whether the non-contact infrared thermometer has power, you need to install the battery, and then open the test key.

2. Aim the temperature gun at the forehead at a distance of about 5-10 cm to ensure that it is not covered by hair, sweat, or hat. If there is sweat,it should be dried, and the distance from the forehead is recommended to be about 3~5 cm.

3. Press the measurement key and hear a "beep" beep, the measurement is completed. The thermometer will display the temperature indication on the screen and record the value. Generally, multiple sets of values will be tested. The highest value is used as a reference, and then the temperature measurement ends.



How to measure body temperature correctly:

1. Generally, people need to wait for more than 5 minutes in the measurement environment, and then measure after the body temperature is stable.

2. If the patient's forehead sweats, a cold compress, and other cooling measures are taken, the measurement result will be low, and body temperature should not be measured at this time.

3. It is recommended to measure about 3 times during the measurement. The interval between each measurement is 3-5 seconds, the result selects the most displayed of data.


How to change non-contact infrared thermometer Celsius to Fahrenheit?

When using an infrared thermometer to measure body temperature

behind the body temperature number, the symbol indicated, which is how Fahrenheit is displayed.




  • Press and hold the MODE button for about two seconds to switch between Celsius and Fahrenheit.
  • In this way, the Fahrenheit on the display will be automatically converted to Celsius, and the temperature numbers and symbols will automatically change after the conversion.
  • Moreover, when the power is turned off and restarted, the measurement is performed again without resetting, and the temperature is displayed in degrees Celsius after switching.



Can I use an infrared thermometer to test meat or food is cooked?

Since infrared thermometers can only measure the surface temperature,they are not very effective in measuring the cooked degree of food. Only traditional thermometers can determine the internal temperature of solid food.

Electronic thermometers can generally measure temperatures far below the temperature at which food is cooked, and are not suitable for testing food. If you need to detect the temperature of food, it is recommended that you buy a digital thermometer for cooking.


Which is the best thermometer for babies?

It is easy for the baby to break the mercury thermometer because of struggling, and the measurement is very inconvenient. The forehead temperature gun only needs to press the measurement key against the baby's forehead, and the baby's body temperature can be obtained within a second or two. However, the disadvantage of the frontal temperature gun is also obvious, it only measures the temperature of the body surface, which is greatly affected by the external environment and can not accurately the real temperature of the baby.



The electronic thermometer is accurate, and the measurement time is about 1 minute, which is more suitable for children. Electronic thermometers require frequent calibration. In general, the electronic thermometer is the most suitable for the baby to use, which is safe and can guarantee the accuracy of the measurement results.


Common sense for measuring body temperature:

1) The parts for measuring body temperature are generally oral cavity, armpit, anus, ear canal, and forehead,among which the anal temperature and ear temperature are closest to the centre temperature of the human body.

2) Mouth temperature + 0.5= body temperature,

axillary temperature + 0.8= body temperature.

The temperature of the forehead fluctuates greatly due to the environment, and it is generally not recommended to measure the forehead temperature.

3) Oral temperature>37.5, axillary temperature>37.2, ear temperature>38, anal temperature>38 is a symptom of fever.


In order to get the most accurate readings, we recommend using the GEMWON personal protective equipment G11 Non-contact Hand-held Infrared Thermometer. This forehead temperature gun is affordable, easy to use, and suitable for babies and adults. FCC, CE, ISO quality certificates are there, far better than other brands and types of thermometers.


We hope this ultimate guide will help you better understand the benefits of using thermometer and how to use body infrared thermometer in an accurate.




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