How To Use Infrared Thermometer

1 How to use the handheld portable infrared thermometer

Hold the handle of the thermometer in your right hand, pull the switch with your index finger, you will hear the sound of "BI-BI", the power will be turned on, the screen will display the temperature of the object you are facing, pay attention to the distance coefficient K, KD : S12: 1, it is generally understood that when the measurement range is 12m away, the measured object area is a circle with a diameter of 1m. If there is an object with a diameter of 1m at a distance greater than 12m, the measured object temperature will be inaccurate.

To measure an object, point the lens directly at the measured object, press and hold the switch to measure, then the SCAN symbol will appear on the upper left side of the screen, indicating that the measurement is in progress, release the switch, and the HOLD symbol will appear on the upper left side of the screen , This is the temperature of the measured object displayed on the screen.

To use the instrument in a dark or dark environment, first release the power switch button, then press the LASER / BACKLIT button, this is the laser / backlight symbol will be displayed on the screen, which is pressed Switch measurement, you will see a red dot appear on the measured object, indicating that the area is being measured. When not in use, release the power switch, then press the laser / backlight button, press no laser, press twice without backlight, press three times without backlight and laser.

When detecting a surface (such as closed), the fixed-point method can be used, and each measurement must be recorded in time. The measurement data is automatically maintained for 7 seconds, without operation, and automatically shut down after 30 seconds. The backlight turns off automatically after a delay of ten seconds.

2 Problems that should be paid attention to when using infrared thermometer

1. Only the surface temperature is measured, and the infrared thermometer cannot measure the internal temperature.

2. The wavelength above 5um cannot be measured through quartz glass. The glass has very special reflection and transmission characteristics and does not allow accurate infrared temperature readings. But the temperature can be measured through the infrared window. Infrared thermometers are best not used for temperature measurements on shiny or polished metal surfaces (stainless steel, aluminum, etc.).

3. To 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.

3 Tips for using infrared thermometer

When measuring the surface temperature of luminous objects, such as aluminum and stainless steel, the surface reflection will affect the infrared thermometer reading. Before reading the temperature, you can put a rubber strip on the metal surface. After the temperature is balanced, measure the temperature of the rubber strip area.

If the infrared thermometer can move back and forth from the kitchen to the cold storage area and still provide accurate temperature measurement, it is necessary to measure after a period of time in the new environment to achieve temperature balance. It is best to place the thermometer in a place where it is frequently used.

Use an infrared thermometer to read the internal temperature of the fluid food, like soup or sauce, must be stirred, and then the surface temperature can be measured. Keep the thermometer away from steam to avoid contaminating the lens and causing incorrect readings.

Infrared thermometers are very useful. They can continuously diagnose electronic connection problems and find hot spots at the output filter connection on the DC battery to detect the functional status of the uninterruptible power supply (UPS); can check the battery assembly and power distribution board wiring Terminal, switch gear or fuse connection, to prevent energy consumption, etc., mastering the use of infrared thermometers will be of great benefit to the work.