How to measure temperature with an infrared thermometer
Infrared thermometer consists of optical system, photodetector, signal booster and signal processing. Display output etc. partial composition. The optical system gathers the infrared radiation energy of the target in its field of view, and the infrared energy is focused on the photodetector and converted into a corresponding electrical signal, which is then converted into the temperature value of the measured target.
1. How to measure temperature with an infrared thermometer, the following are the three temperature measurement techniques of a non-contact thermometer:
1) Point measurement: measure the entire surface temperature of an object, such as an engine or other equipment
(2) Temperature difference measurement: compare the measured temperature of two independent points, like a connector or a circuit breaker
(3) Scanning measurement: detection of target changes in a wide area or continuous area. Like refrigeration lines or switch rooms.
Second, the main considerations for choosing an infrared thermometer
(1) Temperature range: Each type of thermometer has its specific temperature range. The temperature range of the chosen instrument should match that of the specific application.
(2) Target size: When measuring temperature, the target to be measured should be larger than the field of view of the thermometer, otherwise there will be errors in the measurement. It is recommended that the measured target size exceed 50% of the pyrometer's field of view.
(3) Optical resolution (D:S): that is, the ratio of the probe of the thermometer to the diameter of the target. If the thermometer is far away from the target and the target is small, a high-resolution thermometer should be selected.
3. Measuring temperature skills
When measuring the temperature of the surface of shiny objects, such as aluminum and stainless steel, the reflection of the surface will affect the reading of the infrared thermometer. Before reading the temperature, put a rubber strip on the metal surface, and measure the temperature of the strip area after the temperature is balanced.
In order for the infrared thermometer to walk back and forth from the kitchen to the refrigerated area and still provide the best temperature measurement, it must be measured after a period of time in the new environment to achieve temperature equilibrium. Put the thermometer in a frequently used place.
Use infrared thermometers to read the internal temperature of fluid foods, like soups or sauces, that must be stirred before the surface temperature can be measured. Keep the thermometer away from steam to avoid contaminating the lens and causing incorrect readings.
