In the production process, infrared temperature measurement technology plays an important role in product quality control and monitoring, equipment online fault diagnosis and safety protection, energy saving and consumption reduction. In the past 20 years, the technology of non-contact infrared human thermometer has developed rapidly, and its performance has been continuously improved, its functions have been continuously enhanced, its varieties have been continuously increased, and its application scope has been continuously expanded. Compared with contact temperature measurement method, infrared temperature measurement has the advantages of fast response time, non-contact, safe use and long life. Non-contact infrared thermometer includes three series: portable, online and scanning, and is equipped with various options and computer software. Each series has various models and specifications. Among all kinds of thermometers with different specifications, it is very important for users to correctly choose the model of infrared thermometer.
Hand-held infrared thermometer should be widely used now, but here is how to use it correctly:
When measuring the temperature of the measured object with a hand-held infrared thermometer, the infrared thermometer should be aimed at the measured object, and the ratio of the measurement distance to the spot size should meet the requirements of the field of view, not too close or too far. Then press the trigger button to read the measured temperature data on the LCD screen of the instrument. There are five important things to remember when using infrared thermometer.
1 ambient temperature. If the infrared thermometer is suddenly exposed to the ambient temperature difference of 20℃ or higher, the instrument is allowed to adjust to the new ambient temperature within 20 minutes.
2. Only measure the surface temperature of the object. Infrared thermometer can't measure the internal temperature of an object.
3. Pay attention to environmental conditions. Steam, dust and smoke will block the optical system of the instrument and affect the accurate measurement of temperature.
4. Locate hot spots. In order to find the hot spot, we must aim at the target with the instrument first, and then scan the target up and down until the hot spot is determined.
5. Handheld infrared thermometer can't measure the temperature through the glass. Glass has special reflection and transmission characteristics, so it cannot be read accurately, but it can be measured through infrared window. Infrared thermometers are best not used to measure the temperature of bright or polished metal surfaces (stainless steel, aluminum, etc.). ).
There are great differences between infrared thermometer and ordinary thermometer, not only in the working principle, but also in the use method. Generally speaking, a suitable infrared thermometer takes a relatively short time to measure the temperature. Basically, we can get the temperature with relatively accurate data by just touching it or touching it. In addition, whether the later effect of infrared thermometer is satisfactory depends on their use methods and skills. Today, I will give you examples to illustrate these precautions and skills.
What you said may be caused by the following reasons:
1. Thermometer lens contamination
2. The ambient temperature is too high
3. The sensor is damaged
4. Fahrenheit or Celsius temperature has not been switched.
5. The surface emissivity of each material is different. Generally, the emissivity of the material is about 0.95, and the closer to the mirror, the lower the emissivity. For example, the emissivity of aluminum plate is only 0.3-0.4, which leads to the temperature measured by infrared thermometer is only one-third of the real temperature, so the setting of emissivity is also very important.
The structure of infrared thermometer is very simple. Generally, there is a monitor, and the motherboard will not be broken if the value changes. It is usually caused by improper operation or damage to the sensor head. China's sensor technology is still far behind foreign countries.
◆ This article comes from Dongguan Toffee Electronics Co., Ltd. All kinds of infrared thermometer tools and accessories are of high quality, with ten discounts and after-sales warranty, which is definitely worth having.
For more product information, please consult: Feita Electronic Tools Store (Taobao)
Or the official flagship store of Feita (JD.COM)
Address: Building 2, No.96 Cheng Nan Avenue, Zhangmutou Town, Dongguan (No.6 Baoshan New Village 13 Lane, Xuzhen Community, Zhangmutou Town)