How to measure the temperature of an infrared thermometer
The infrared thermometer consists of an optical system, a photodetector, a signal amplifier, and signal processing. Composed of display output and other components. The optical system gathers the infrared radiation energy of the target within its field of view, and the infrared energy is focused on the photodetector and converted into corresponding electrical signals, which are then converted into the temperature value of the measured target.
1, How to measure temperature with an infrared thermometer? The following are three temperature measurement techniques for non-contact thermometers:
(1) Point measurement: measuring the temperature of the entire surface of an object, such as an engine or other equipment
(2) Temperature difference measurement: Comparing the measured temperatures of two independent points, such as connectors or circuit breakers
(3) Scanning measurement: detecting changes in targets over a wide or continuous area. Like refrigeration pipelines or distribution rooms.
2, The main consideration when choosing an infrared thermometer is
(1) Temperature range: Each model of thermometer has its specific temperature measurement range. The temperature range of the selected instrument should match the temperature range of the specific application.
(2) Target size: When measuring temperature, the target being measured should be larger than the field of view of the thermometer, otherwise there may be measurement errors. It is recommended that the size of the target being measured exceed 50% of the field of view of the thermometer.
(3) Optical resolution (D: S): The ratio of the diameter of the thermometer probe to the target diameter. If the thermometer is far away from the target and the target is small, a high-resolution thermometer should be selected.
3, Temperature measurement techniques
When measuring the surface temperature of luminescent objects, such as aluminum and stainless steel, surface reflections can affect the readings of infrared thermometers. Before reading the temperature, a rubber strip can be placed on the metal surface, and after the temperature is balanced, the temperature in the rubber strip area can be measured.
To achieve temperature measurement with an infrared thermometer that can move back and forth from the kitchen to the refrigeration area, it is necessary to wait for a period of time in a new environment to reach temperature equilibrium before measuring. Place the thermometer in a frequently used location.
Use an infrared thermometer to read the internal temperature of fluid foods, such as soup or sauce, which must be stirred before measuring the surface temperature. Keep the thermometer away from steam to avoid contaminating the lens and causing incorrect readings.
