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How to Accurately Measure Fever with an Infrared Thermometer

Sep 01,2025 | 14 min read

How to Accurately Measure Fever with an Infrared Thermometer



In today’s health-conscious environment, the ability to quickly measure body temperature is increasingly important. One of the most effective tools is an infrared thermometer. These devices provide contact less temperature measurement, making them a convenient option for both individuals and professionals. However, it’s important to understand that infrared thermometer readings are for informational purposes only and are not a substitute for medical diagnosis or treatment.


Before using an infrared thermometer, ensure the device is properly calibrated and that you are familiar with its operating instructions. A normal human body temperature typically ranges between 36°C and 37°C. A reading above 37.2°C usually indicates a fever, while a temperature below 36°C can also be considered normal, albeit at the lower end of the normal range. Most infrared thermometers have a measurement range of 32°C to 42.9°C, making them ideal for detecting temperature fluctuations.


To take your temperature, hold the infrared thermometer at the recommended distance from your forehead—usually about 1-5 cm, depending on the manufacturer’s instructions. Aim the thermometer at the center of your forehead and press the measurement button. The thermometer takes only seconds to read, making it easy to quickly assess your temperature.


KELLYUNION is a reputable medical equipment supplier, offering a range of affordable, highly accurate, and fully certified infrared thermometers. Their products are designed to meet the needs of a wide range of users, including those in homes, hospitals, and research institutions. With over a decade of experience in the medical field, KELLYUNION ensures that each thermometer meets stringent quality control standards.

KELLYUNION thermometers are not only accurate, reliable, and affordable, but are also known for their fast response time, making them ideal for those who need immediate results. The company has established strong partnerships with numerous domestic and international distributors, further solidifying its leading position in the industry.


While infrared thermometers are very useful for initial temperature assessments, it’s important to remember that any concerning readings should prompt further medical evaluation. Always consult a healthcare professional if you develop a fever or accompanying symptoms.


All in all, using an infrared thermometer is simple and can provide a quick glimpse into your health. Understanding how to use this device effectively can help you take a proactive role in monitoring your health.



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