Introduction to the measurement and use of infrared thermometers
Infrared thermometer is a commonly used measuring instrument, which has certain applications in many industries.
When using an infrared thermometer, the accuracy must be very high. Usually, we need to ensure its accuracy when using an infrared thermometer to measure.
So what is the method to ensure the measurement accuracy of infrared thermometer? Let me introduce it to you in detail.
A complete understanding of infrared technology and its principles is fundamental to accurate temperature measurement.
When using an infrared thermometer to measure temperature, the infrared energy emitted from the measured object is converted into an electrical signal by the sensor through the optical system of the infrared thermometer, and the signal is displayed as a temperature reading and a thermal image.
Several factors determine measurement accuracy, the important ones being emissivity, distance (distance factor), and field of view.
What problems should be paid attention to when using infrared thermometers?
1. Only the surface temperature is measured, and the infrared thermometer cannot measure the internal temperature.
2. The temperature cannot be measured through the glass. The glass has very special reflection and transmission characteristics, which does not allow accurate infrared temperature readings.
But the temperature can be measured through the infrared window. Infrared thermometers are not intended for use on shiny or polished metal surfaces (stainless steel, aluminum, etc.).
3. Locate the hot spot. To find the hot spot, the instrument aims at the target, and then scans up and down on the target until the hot spot is determined.
4. Pay attention to environmental conditions: steam, dust, smoke, etc. It blocks the optical system of the instrument and affects accurate temperature measurement.
5. Ambient temperature. If the thermometer is suddenly exposed to an ambient temperature difference of 20°C or higher, allow the instrument to adjust to the new ambient temperature within 20 minutes.
