Measurement of temperature with an infrared thermometer method
Infrared thermometer by the optical system, photoelectric detector, signal big and signal processing. Display output and other components. Optical system convergence of its field of view of the target infrared radiation energy, infrared energy focused on the photoelectric detector and transformed into the corresponding electrical signals, the signal is then converted into the measured temperature value of the target.
How to measure the temperature with infrared thermometer, the following three temperature measurement techniques for non-contact thermometer:
(1) point measurement: the determination of the object all surface temperature, like the engine or other equipment
(2) temperature difference measurement: compare the measured temperature of two independent points, like connectors or circuit breakers
(3) Scanning measurement: Detecting target changes over a wide area or continuous area. Like refrigeration lines or distribution rooms.
Select infrared thermometer main considerations
(1) temperature range: each type of thermometer has its own 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 to be measured should be larger than the field of view of the pyrometer, otherwise the measurement has an error. It is recommended that the size of the measured target exceeds 50% of the field of view of the pyrometer.
(3) optical resolution (D: S): that is, the pyrometer probe to the target diameter ratio. If the pyrometer away from the target, and the target is small, should choose a high-resolution pyrometer.
Measuring Temperature Tips
When measuring the surface temperature of luminous objects, such as aluminum and stainless steel, the surface reflection will affect the infrared thermometer readings. Before reading the temperature, you can put an adhesive strip on the metal surface, the temperature balance, measure the temperature of the adhesive strip area.
For an infrared thermometer that can go back and forth from the kitchen to the refrigerated area and still provide temperature measurements, it is necessary to take measurements after a period of time in the new environment to achieve temperature equilibrium. Place the pyrometer in a location where it will be used frequently.
Use an infrared thermometer to read the internal temperature of a fluid food, such as a soup or sauce, which must be stirred and then the surface temperature can be measured. Keep the pyrometer away from vapors to avoid contaminating the lens and causing incorrect readings.
