Advantages and uses of non-contact infrared thermometer
The non-contact infrared thermometer uses infrared technology for measurement. It does not need to touch the measured object during measurement. It can quickly and accurately measure the surface temperature by simply aiming and pressing the trigger. The measurement data is directly displayed on the LCD display. Infrared The thermometer is light in weight, small in size, easy to use, and can reliably measure hot, dangerous and other difficult objects without polluting or damaging the measured object. Non-contact infrared thermometer Instructions
1. When using a non-contact infrared thermometer to measure temperature, point the non-contact infrared thermometer to the object to be measured and press the button. At this time, pay attention to the ratio between the distance and the size of the measurement area. The machine is equipped with a laser light for for aiming at the object to be measured.
2. Object distance ratio (D:S) refers to the ratio of the measurement distance to the surface area of the measured object. When the distance between the non-contact infrared thermometer and the measured object increases, the surface area of the thermometer and the measured object is required bigger. D:S=12:1
3. Observation range Make sure that the target to be measured is larger than the measurement area of the machine. The minimum diameter of the measured area must be more than 1.5 square centimeters.
4. Reflectivity The emissivity of most organic materials and paints or oxidized materials is 0.95 (already set in this machine), smooth or polished metal surfaces may cause inaccurate measured values, and it is necessary to cover the surface when making compensation Apply tape or black paint and wait for it to be the same temperature as the underlying material before taking a temperature measurement.
5. Press the battery switch, install the battery correctly, press the switch button to turn it on, the LCD will display the battery symbol, temperature value, and the value retention time is about 7 seconds.
6. Use According to the size of the measured object, select the appropriate distance, aim at the measured object, press the button switch, and the LCD will display the temperature value and reading.
Several factors that affect the measurement accuracy of non-contact infrared thermometers:
1. Emissivity: The emissivity of the surface of a general object is 0.95, and the emissivity of other materials can be found from the published emissivity table.
2. Field of view: the ratio of the distance from the infrared thermometer to the measured object and the measured spot size.
3. Object distance ratio: ensure that the area of the object to be measured is larger than the spot size measured by the infrared thermometer. The smaller the area of the object to be measured, the closer it should be to the word. Working principle of infrared thermometer: Infrared thermometer is composed of optical system, photodetector, signal amplifier, signal processing, display output and data analysis. The optical system gathers the infrared radiation energy of the target in its field of view, and the infrared energy is gathered on the photodetector and converted into a corresponding electrical signal, which is then converted into the temperature value of the measured target.
