The temperature indicating record label is used to be called a color-changing temperature measuring patch in CHINA, and the foreign name is generally called "Temperature Indicating Recorder Labels", namely: "Temperature Indicating Recorder Labels", which is a relatively new temperature measuring technology that uses temperature-sensitive color changing Temperature technology, which can be attached to the device under test, and change the color or display temperature numbers as the temperature of the device changes, and thus the temperature change of the device can be grasped. It has many advantages that other temperature measurement products do not have, and has attracted the attention of the industrial temperature measurement industry. At present, it has been widely used in many areas in CHINA, but in the actual application on site, some users do not know enough about the performance of the product, and there are still some misunderstandings in some aspects. Introduce to the majority of users, so that users can better grasp it.
1. What are the characteristics of the temperature measuring patch (temperature recording label)?
The temperature measuring patch is easy to use and can be pasted on any flat position of the equipment. It can respond quickly after overheating, and a striking discoloration occurs within a few seconds; the record is the highest peak value of the temperature, and an obvious overheating can occur immediately Discoloration, and the over-temperature recording function that ordinary thermometers do not have (with the color recording function of long-term discoloration after over-temperature) and the reversible function of repeated discoloration. Small size, obvious display, intuitive and cheap. The color change temperature error of this product does not exceed 2 degrees. After overheating, the discoloration color is very bright and eye-catching. It improves the disadvantages of the outdated electric temperature measuring wax sheet: the wax sheet is not easy to stick, troublesome to use, slow in response to over-temperature, and difficult to observe.
2. How to paste and use the temperature measuring patch (temperature recording label) correctly? Can it be charged and pasted?
Users should correctly understand how to use the temperature measuring patch. Remove the stickers of "Single Temperature Multi-Color Series" and "Temperature Digital Display Series" because there is no protective film, so you need a little skill, first bend the bottom paper and then peel it off; if you are not skilled in removing it, please use a knife along the bottom paper from the side Just shovel it, don't pick it randomly to avoid damage. The temperature measuring part attached should be relatively flat, clean and dry. It is better to remove the oxide layer and uneven surface with sandpaper, or clean and wipe it with gasoline and other solvents. This product is attached with a pressure-sensitive adhesive. When pasting, press it firmly with your hands to ensure that the tiny air gap between the glued surfaces is eliminated, so that the glued surface can be bonded under pressure to make it sticky and stick firmly. When pasting on parts that may be stained with oil or water, please use a temperature measuring patch with a protective film, which has a strong anti-fouling function. Where the environment is particularly harsh, it is better to wrap a larger piece of scotch tape, which can play a better role in protection and fixing. If necessary, it can also be pasted with electricity. First, stick the patch to the small insulating rod at the tip, and push the glued side to the device, so that it can be easily pasted on the device. In addition, the temperature measuring pigment paste can be charged and applied, which is more convenient. Note that it is forbidden to touch with hands during temperature measurement to prevent damage to the product.
3. How to observe the discoloration of the temperature measuring patch and judge the temperature of the equipment - how does it realize the over-temperature record and the repeated discoloration of the color?
The color-changing patch we produce has the function of recording the over-temperature process; it also has a strong color repeating display function (semi-reversible). For example, the red variety of "single temperature multi-color change series"; when the temperature measuring piece is overheated, it can change color for a long time in a few seconds, and the color changes from white to bright red dot shape immediately. When it falls down, the color changes from bright red to pink (light red), and no longer returns to the original white. It records the process of overheating and can maintain this color for a long time. This is the color recording function; into bright red, this repeated discoloration process is the reversible function. All in all, the discoloration color of the temperature measuring patch is particularly bright when the temperature is overheated; after the overtemperature discoloration, the color that cools down is light, which is a middle tone, which can be used as the main basis for judging the current temperature. Repeated color changing function can reduce the cost of use and help judge whether the current temperature is overheating. Theoretically, this repeating color changing function can be repeated infinitely, but if it is overheated for a long time (a few days, or a few hours at ultra-high temperature), it may lose the repeating color changing function, and it will keep the red color when it is overheating for a long time, which is a long-term record Function. The same goes for other color varieties.
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4. What is the function of the recording function? Sometimes during the inspection, it is found that the pasted temperature measuring patch has changed color, but it is immediately measured with other thermometers and found that the temperature of this part is not high, what is going on?
The product introduction mentioned that the temperature measuring patch can faithfully record the heating process of the equipment when the inspection personnel are not present, so it is called the whistleblower of equipment failure. It can record any over-temperature process. It is found that the temperature measuring patch has changed color, which definitely means that the part has been overheated. The overheating process may have occurred now, or it may have occurred in the past. If the temperature measuring patch is found to be discolored during the inspection, use a thermometer to measure the temperature immediately. Since ordinary thermometers do not have a recording function, they can only measure the current temperature, but not the temperature during the period when the temperature was overheated. The measured temperature value is not high, indicating that the temperature of this part has dropped now, but it is also the fault point. If you want to measure the temperature measurement accuracy of the color-changing temperature measurement patch, you can verify it according to the test method introduced in "Questions and Answers".
5. Why do you sometimes see no discoloration when you put the temperature measuring patch (temperature recording label) on the teacup and pour boiling water?
The test container for the temperature measuring patch should use quick heat transfer cans, aluminum lunch boxes, etc. Since the tea cup has a heat preservation function, the heat conduction of the cup wall is very poor. Only five or sixty degrees, so it may not reach the color change temperature and cannot change color. During the test, you can bake with cigarette butts, or use a low flame, but pay attention to the distance, because the temperature of the flame can reach more than 500 degrees, and if it is too close, it is easy to burn the patch.
6. How much is the error of the temperature measurement patch? How to detect the actual discoloration temperature point of the temperature measuring patch (temperature recording label)?
The color-changing temperature measurement patch (commonly used color-changing temperature points for electric power: 55, 60, 65, 70, 75, 80, 85°C) has a temperature point error of 1-2°C. In order to facilitate users to test the accuracy of the product by themselves, here is a simple and accurate test method; first find a can (preferably a square one with a large mouth), an aluminum can or even a metal water cup, a metal bucket, and stick a temperature measuring sticker on the outer wall Tablets, first pour some cold water, insert a thermometer, prepare a pot of boiling water, and start the test. At that time, boiled water must be slowly poured in a small amount. At the same time, in order to make the temperature of the water uniform, it must be continuously stirred with a thermometer. When you stop pouring hot water, you can stop stirring and observe the temperature; as the water temperature rises, the value of the thermometer rises to When the color changes temperature, you can see the color change of the temperature measuring patch corresponding to the temperature. This method is simple, accurate and easy to master. Note that the method of sticking the temperature measuring patch on the outer wall of the kettle and directly burning it on the fire or electric stove cannot be used. It is forbidden to touch it with hands during the temperature measurement test.
7. How to choose the temperature point of the color-changing temperature measuring patch (temperature recording label)?
Relevant documents stipulate that the temperature of various parts of power transformation and distribution equipment should generally not exceed 70°C, and the maximum temperature of individual parts may not exceed 80°C (including conductor busbar joints, knife switches, etc.). Corrosion and contact resistance are too large, and long-term overtemperature will lead to direct damage to substation and distribution equipment and electrical equipment, resulting in major economic losses. Due to the different equipment and ambient temperature and conditions in different places, the temperature measurement standards selected in different places are not completely consistent. In addition, the location where it is pasted must be taken into account. In places exposed to strong summer sunlight, the temperature may be as high as 50 degrees or even close to 60 degrees for the time being. In short, the temperature measurement standard is generally lower in places with relatively low ambient temperature and small load, and vice versa in other places. Generally, the commonly used detection temperatures for substation equipment are 60°C, 70°C, and 80°C. In order to allow users to better choose the temperature measuring patch that suits them, there are higher or lower temperatures 65, 70, 75, 80, 85°C and 100, 120°C, etc.) and various series of different types of patches; users can choose according to their needs. Users who used temperature measuring wax sheets in the past should pay attention, because the heat conduction and reaction speed of this product are faster than wax sheets, at the same temperature, especially short-term overheating, this product will react first and change color, and the wax sheet may not have time to melt at this time and shedding; this does not mean that the temperature of this product is formulated low! Considering the habits of wax flake users, when purchasing this product, choose a temperature that is a few degrees higher than the customary temperature of wax flakes. If you used 60-degree wax sheets in the past, you can choose a 65-degree temperature measurement patch.
8. How long is the life of the temperature measuring patch (temperature recording label)?
As long as the temperature measuring patch does not exceed the temperature, it can be used for many years, especially indoors. It can be stored for 4-5 years or even longer under normal temperature conditions. Considering that the industrial site is relatively complex and the environment is relatively harsh, we stipulate that as long as the temperature measuring patch remains white and does not exceed the temperature, it can be used for 2-3 years. It is better to replace the stickers that have changed color due to overheating in time with maintenance. When saving, it should be stored in a cool and airtight place, and it is forbidden to get close to high temperature to prevent over-temperature discoloration; avoid direct scratching, scratching, smashing and other mechanical damage.
9. How to choose the color and type of color-changing temperature measurement patch (temperature recording label)? Are there larger and micro sizes?
Considering the cost, the price of our products is basically proportional to the patch area, almost all calculated with reference to the area, and there is not much difference. Considering the performance-price ratio and comprehensiveness, for outdoor occasions, you can choose temperature measuring patches with "multi-color change series with protective film", such as YDX678, BD, GK678, BC, BF, window and Digital enhanced / reflective type. The features are neat and beautiful, good for preservation, easy to take off, effective in stain resistance and waterproof, the BD type display window is relatively large and eye-catching, and easy to stick and take off. In many occasions, everyone wants a wider range of temperature measurement to understand the gradual change process of temperature rise. Many people like to use the general-purpose YDX678 60°C, 70°C, and 80°C three temperatures and three color combinations. The GK678 type temperature measuring chip not only uses three different colors but also uses numbers to indicate the three temperatures of 60°C, 70°C, and 80°C; Various sizes and specifications, using eye-catching black and white changes in different windows to indicate three temperatures of 60°C, 70°C, and 80°C; antifouling and waterproof. For ordinary indoor occasions, where the requirements are not very high, you can choose the "Single Temperature Multi-color Series", which has three sizes, large, medium and small. The colors to choose from are not only white to red, but also white to yellow, green, and black. Wait, show clear. You can also choose the "Temperature Digital Display Series" temperature measuring patch, which is characterized in that it can display the degree of overtemperature after overheating, which is particularly intuitive and obvious. The digital display reflective type is based on the original digital display by adding a protective film and base colors, such as red, green and yellow, which are not only eye-catching, stain-resistant and waterproof, but also can be used as the three-phase sequence indicator color of the power bus, killing two birds with one stone. In some occasions where the light is relatively dim, you can order a patch with high-strength reflective technology, such as a high-strength reflective digital display reflective type. When the light shines, its directional retroreflective effect is like a dazzling small mirror, which is easy to find and inspect. The current products with high purchase rate are: YDX678 type, BD type; especially when new users are not sure which temperature or model to choose, they should first consider choosing a product with a combination of three temperatures. In special cases, the user may require a larger size or shape. Small-sized color display temperature measurement patches include: button type, 1.5 cm in diameter, and micro digital display type, 1.1 cm in diameter. There is also a random cut type, which can be cut into any size and shape according to your needs.
10. What are the characteristics of temperature measuring pigment paste and how to use it? Can it be charged to write?
Temperature measuring pigment paste is a kind of paint with wide application and strong applicability. It has various temperatures. It can be painted on the surface of the device under test with fingers or dipped in a brush. It will be white after drying. The change is obvious and irreversible. It can be widely used to measure the temperature of rough or even greasy surfaces. It can be applied to places where temperature measuring patches are not suitable, and it is easy to use. It needs to be stirred evenly before use. The coating should be thin rather than thick. If it feels sticky and inconvenient to apply, it can also be diluted with water. In addition, with the help of insulating sticks and brushes, it can also be applied on the surface of charged objects. For details, please refer to the introduction of temperature measuring paint paste.
