Selection of wireless temperature measurement devices
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The high-voltage switchgear currently in use is mainly of the KYN28 type; it is easy to operate, features comprehensive five-protection functions, and is safe and reliable. However, due to its high protection level, it is not possible to monitor the operation of the internal components while the switchgear is in use. Especially the isolation contacts, which are located in the contact box, cannot be seen, nor can their temperature be measured using a thermometer. For this reason, over the years, more and more wireless temperature measurement devices have emerged, and they have been well received by a wide range of users. We have used various types of online temperature measurement devices; some of them are contact-type, resembling wristbands that are wrapped around the contact arms or busbars to carry out temperature measurements. Then it is wirelessly transmitted to the backend receiving device. There are also fixed types, similar to thermometers, that are installed inside a cabinet and point at the area to be measured, continuously monitoring it and transmitting the data via a cable to a receiving device. Each has its advantages and disadvantages. Due to the short service life of contact-type batteries, online power supply types were later developed; in these systems, the sensors are fixed to the contact arms or bayonet contacts using a steel strip. When an electric current flows through it, the steel strip functions as a transformer, supplying power to the sensor. This method is the most widely used nowadays. There are many companies on the market that produce wireless temperature sensors, making it difficult for users to make a choice. The production bases are mainly located in Hangzhou, Guangdong, and other places. Well-known brands include Hangzhou Xupu, Zhuhai Yiduo, etc. What are some other reliable brands of wireless temperature sensors? Everyone is welcome to make active recommendations, which will also provide more options during project design.
Temperature-changing stickers are very cheap on Taobao. Take a look at the \"cutting-edge technologies\" on this device 6 – Using \"temperature-sensitive stickers\" to assist in detection https://bbs.hcbbs.com/thread-3052017-1-1.html
Thermometer stickers are mainly used to facilitate inspections by operators at night. The best way is still a thermometer, as it can visually display the temperature and location of the hot spots.