The difference between temperature patch and temperature measuring wax sheet
Temperature patch, also known as temperature measuring patch, temperature sensitive sticker, is a self-adhesive temperature measuring strip used to track and record temperature by changing color. The temperature measuring wax sheet is made according to the melting point of the wax, which will melt if overheated.
Temperature measuring patch is commonly known as temperature patch, temperature sticker, temperature label, temperature patch, temperature label, etc. It is a self-adhesive adhesive on the back, which can be pasted directly to the place where the temperature is measured. When the temperature of the pasted place is higher than the discoloration temperature, it will automatically change from the original white to black after overheating. After overheating and discoloration, it will remain black forever, indicating that the place has been The set temperature has been exceeded.
temperature sticker
Temperature measuring patches are widely used in electrical connectors, transformer busbar connectors, electrical switch contacts, motors, bearings, etc. For daily inspection, you only need to check whether each patch has changed color, and you can complete the complicated and time-consuming temperature measurement work, which makes up for the shortcomings of infrared thermometers and contact point thermometers.
Of course, the temperature measuring patch can also be used for temperature marking, such as whether the disinfection and sterilization temperature is reached, whether the baking temperature reaches the preset temperature, whether the temperature of the material during transportation exceeds the allowable temperature mark, etc. It can be used in occasions where you want to know whether the temperature exceeds or does not exceed. There are two kinds of specifications: single-point and multi-point combination. Single-point means that there is only one temperature on one patch. A little more combined type means that there are multiple external temperatures on one patch and combined together.
Temperature measuring wax
The temperature measuring wax sheet is an early product used to indicate the overheating temperature of electrical joints. It is well known by the majority of electric workers. The temperature measuring wax sheet is made according to the melting point principle of temperature wax. When the temperature measuring wax sheet exceeds the rated melting temperature, it will automatically melt and fall off. Indicates overheating. Temperature-measuring wax sheets have been used for a long time and are widely used for overheating temperature indication of electrical joints in substations. There are five temperatures: 60°C (yellow), 70°C (green), 80°C (red), 90°C (caramel), and 100°C (blue).
502 glue is needed to assist the paste when pasting the temperature measuring wax sheet, and it does not have glue itself.
The difference between temperature measuring stickers and temperature measuring wax sheets
| name | paste method | overheating state | Application range | other |
| Temperature patch | The back comes with self-adhesive, which can be pasted directly, convenient and firm. | Turns from white to black when overheated. Advantages: large color contrast, obvious discoloration. Once overheated, it will be displayed for a long time, which is convenient for inspection afterwards | It has a wide range of applications and can be pasted on curved surfaces, such as wrapping directly on cable joints to monitor overheating of cable heads, etc. | Such as electrical connectors, disinfection and sterilization temperature marking, clothing adhesive lining, dyeing and finishing temperature marking and so on. |
| Temperature measuring wax | Need to apply 502 glue on the bottom surface, it is troublesome to paste | Melts when overheated. Disadvantages: The wax that melts and flows down sometimes falls to the contacts such as the relay below, causing secondary failures. It is susceptible to abnormal shedding due to aging, vibration, etc., resulting in misjudgment. | Pasting on curved surfaces is not possible. Single application. | Most of them are used for overheating temperature indication of electrical joints. |
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