The main factors affecting the measurement of infrared thermometer How does the thermometer operate
1. The distance ratio to the target (spot)
2. Field of view
3. Environmental conditions
4. Ambient temperature
5. Emissivity
Distance to target (spot) ratio The optical system of the infrared thermometer collects the energy of the circular measuring spot and focuses it on the detector. Optical resolution is determined by the ratio (D:S ratio) of the distance from the device to the object to the size of the spot to be measured. The larger the ratio, the better the resolution of the device, allowing smaller spots of light to be measured from greater distances. A newer innovation in infrared optics is the addition of a near-focus feature that provides accurate measurements of small target areas free of unwanted background temperatures.
Field of View Make sure the target is larger than the spot size the device is measuring. The smaller the target, the closer you should be. When accuracy is critical, make sure the target is at least twice the spot size.
Environmental conditions Be aware of the environmental conditions in the work area. Vapor, dust, smoke, etc. can block the lens of the device, preventing accurate measurements. Other conditions such as noise, electromagnetic fields or vibrations should also be considered before installation begins. A protective housing, air purge, and air or water cooling protect the sensor and ensure accurate measurements.
Ambient temperature (ambient temperature) If the thermometer is exposed to a sudden environment with a temperature difference greater than 20°C, please keep it for at least 20 minutes to allow it to adapt to the new ambient temperature. Fixed sensors are performance optimized for specific ambient temperature ranges.
Emissivity Emissivity is a measure of an object's ability to radiate infrared energy. The radiated energy indicates the temperature of the object. Emissivity can range from 0 (clean mirror surface) to 1.0 (blackbody). Learn about emissivity and emissivity values for various materials.
Introduction to the selection of thermometers
With the continuous development of technology and technology, the best design and new progress of infrared thermometers provide users with various functional and multi-purpose instruments, expanding the choice.
When choosing a thermometer model, you should first determine the measurement requirements, such as the temperature of the target to be measured, the size of the target to be measured, the measurement distance, the material of the target to be measured, the environment of the target, response speed, measurement accuracy, portable or online, etc. .
