Emissivity refers to the ability of any object to emit infrared radiation. Typically, metals have lower emissivity, while common materials like human skin, water, or wood have an emissivity of around 0.95.
Different materials have different emissivity characteristics, so when using an infrared thermometer, for more accurate temperature measurements, you can adjust the emissivity to obtain precise temperature readings.
Infrared thermometers are influenced by the measurement distance. If the object being measured is too small and too far away, the infrared thermometer will measure the temperature of the surrounding area, leading to inaccurate temperature readings.
Generally, a conventional infrared thermometer starts with a measurement area approximately the size of a circle with a diameter of 2 centimeters. As the infrared thermometer is moved away from the target, the measurement area gradually increases. This increasing ratio is the D:S ratio.
Therefore, when measuring small objects at a distance, it is advisable to choose an infrared thermometer with a larger D:S ratio.
An infrared thermometer, also known as a non-contact thermometer, can accurately measure the temperature of objects from a distance.
When purchasing, pay attention to the temperature range it can measure, for example, -30 to 500°C or 0 to 1000°C, and also consider the allowable error in temperature measurements. For example, when measuring human body temperature, the error should not exceed ±0.3°C.
Infrared thermometers are versatile tools for temperature monitoring across various applications. For instance, they can be employed to track the heating and cooling of materials during quality control in research and development or manufacturing processes. This includes activities like cooking, freezing, heating, thawing, and storing food. Additionally, they are useful for measuring the temperature of air conditioners and thermal boilers.
Language
中文
