How to use and precautions for non-contact infrared thermometer
1. When using a non-contact infrared thermometer to measure temperature, point the non-contact infrared thermometer at the object to be measured and then 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. To aim at the object being 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 to be larger. D:S=12:1
3. Observation range
Be sure to make sure that the target being measured is larger than the measuring 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 paint or oxidized materials is 0.95 (already set in the machine). Smooth or polished metal surfaces may cause inaccurate measurements. To compensate, the surface must be covered with tape or black. Paint and wait to bring it to the same temperature as the material underneath before taking a temperature measurement.
5. Press the battery switch, install the battery correctly, and press the switch button to turn it on. The LCD will display the battery symbol and temperature value. The value retention time is about 7 seconds.
6. Use
According to the size of the object to be measured, select a suitable distance, aim at the object to be measured, press the button switch, and the LCD will display the temperature value and reading.
Precautions for using non-contact infrared thermometer
1. Only measure the surface temperature. Infrared thermometers cannot measure internal temperatures.
2. Do not measure temperature through glass. Glass has different reflective and transmissive properties than other materials, affecting infrared temperature readings.
3. It is recommended not to use an infrared thermometer to measure bright or polished metal surfaces (stainless steel, aluminum, etc.).
4. Pay attention to environmental conditions. Steam, dust, smoke, etc. cover the lens and prevent accurate measurement.
5. Pay attention to the ambient temperature. If the infrared thermometer encounters a sudden environmental temperature difference of more than 10 degrees, allow the instrument to adapt to the new ambient temperature for at least twenty minutes.
6. Different objects have different emissivities.
