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Cw-678 Color Changing Temperature Sensing Label¹

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Product Description Temperature record labelTemperature Indicating Recorder Labels ", also known as temperature indicating film, temperature wax film, color changing temperature indicating film, temperature indicating label, surface temperature label, temperature sensitive test paper, temperature sensing paper, temperature measuring paper, temperature indicating strip, temperature strip, temperature measuring strip, temperature measuring label, temperature sensitive/thermal sensitive/thermal sensing, temperature indicating paper, temperature sensor, temperature indicating wax film, temperature testing wax film, color changing temperature measuring patch, sticker, overheating monitoring, temperature recording phase sequence indicating label. This is a relatively novel temperature measurement technology that uses temperature sensitive color changing temperature measurement technology. It can be attached to the tested device, change color or display temperature numbers with the temperature changes of the device, and thus grasp the temperature changes of the device.advantage(1) Specially suitable for components, external surfaces, and objects in life-threatening environments that cannot or are difficult to measure with ordinary thermometers. Temperature measurement of transistors, integrated circuits, chemical reaction tanks, engine bearings, conductive busbars, switches, connectors, transformers, etc.(2) Easy to inspect, temperature changes can cause color changes, and people can take measures to avoid accidents and prevent them before they happen.(3) The product is lightweight, easy to carry, and easy to install. If it comes with a non adhesive temperature measuring and color changing patch, it is very convenient to use, just peel off the patch and it will do.(4) More economical, it saves costs compared to other temperature measurement tools when measuring the same number of temperature measurement points.Color changing mechanismAfter being heated, an object undergoes a series of chemical and physical changes, resulting in a change in the color of reflected light due to changes in its molecular structure. For example, frequency band transfer caused by crystal transformation, sublimation, dehydration, oxidation, and decomposition leading to light scattering.Classification of productsAccording to the color change, it can be divided into single or multiple color changes, reversible or irreversible. For example, LCD color changing products can undergo color changes such as red, green, and blue within a specified small temperature range, with different colors corresponding to different temperatures. As the temperature recovers, the color also recovers, belonging to the reversible multi color changing series. And the single color series only undergoes one color change. Color irretrievability is an irreversible series. In most industrial production, it is impossible for someone to always be present at the temperature measurement site, and it is necessary for people to patrol and observe. Such areas require irreversible color changing temperature measurement products. Its color does not recover after heating, that is, it retains the color that has already exceeded the temperature. Due to its ability to record the process and hidden dangers of overheating accidents, it has been favored by users. In some cases, people hope to have both reversible and irreversible advantages, so products with reversible and recording functions have emerged.Key points for use(l) Correct useDuring storage, avoid scraping, scratching, folding, or high temperatures. If you are not proficient in removing it, you can use a small knife to scrape it. Do not pick it randomly to avoid damage. The temperature measuring part should be relatively clean, preferably cleaned with gasoline or other solvents, or wiped once, in order to stick firmly. When applied to areas that can come into contact with oil or water, a larger transparent tape should be covered on the temperature measuring patch for protection, or a temperature measuring patch with a protective film should be selected, which has strong oil, water, and dirt resistance functions (if the white film part of the temperature measuring patch is not protected by a protective layer, it may change color when directly in contact with certain liquids).(2) Measured color change temperature pointThe color changing temperature measuring patch has been strictly tested during the manufacturing process. The temperature point error is 1~2 oC. In order to make it easy for some users to test by themselves, here is a simple and accurate test method. Find a large pop can, such as the pop can for holding Babao Congee. Stick temperature measuring patches of various temperatures on its outer wall in sequence, pour in a small amount of cold water, insert a thermometer, prepare a pot of boiling water, and start testing. Slowly pour in a small amount of boiling water first. In order to achieve uniform temperature of the water, a thermometer should be used to stir it. As the water temperature increases, when the thermometer value reaches the color changing temperature, the corresponding temperature measurement patch will change color.(3) Service lifeIn theory, after the temperature measurement patch is attached to the temperature measurement site, as long as it does not exceed the temperature limit, it can be used for 2-3 years or even longer. Considering the complexity of industrial sites, it is stipulated that as long as the temperature measuring patch is used in a normal environment at room temperature and remains white without exceeding the temperature limit, it can be used for 2 years. It is recommended to replace the sticker once a year for accurate temperature measurement. The patch that has already changed color due to overheating should be replaced in a timely manner during maintenance.Temperature measurement patch characteristicsThe temperature measurement patch is easy to use and can be attached to any flat position of the device. It can quickly react after overheating and change color noticeably within seconds; The highest peak temperature is recorded, and significant color change can occur when the temperature is instantly exceeded. It also has a temperature recording function that is not available in general thermometers (with a color recording function that permanently changes color after overheating) and a reversible function for repeated color changes. Small size, clear display, intuitive, and affordable. The color change temperature error of this product does not exceed 2 degrees. After overheating, the color change is very vivid and eye-catching. Improved the shortcomings of outdated electric temperature measuring wax sheets: wax sheets are not easy to stick firmly, difficult to use, slow over temperature reaction speed, and difficult to observe.Determine device temperatureHow does it achieve over temperature recording and repeated color change?The color changing patch we produce has an over temperature process recording function; There is also a strong color repetition display function (semi reversible). For example, the red variety of the "single temperature multi color series"; When the temperature sensor exceeds the temperature limit, it can permanently change color within a few seconds. The color immediately changes from white to a bright red dot shape. When the temperature drops again, the color changes from bright red to pink (light red) and no longer returns to its original white color. It records the process of overheating and can maintain this color for a long time. This is the color recording function; If the color changes from pink to bright red again after overheating, this repeated color change process is reversible. In summary, the color change of the temperature measuring patch is particularly bright when it exceeds the temperature limit; After the color changes due to overheating, the color that cools down again is light and belongs to the middle tone, which can be used as the main basis for judging the current temperature. The repeated color change function can reduce usage costs and help determine whether the current temperature is overheating. This repeated color change function can theoretically be repeated infinitely, but if it is overheated for a long time (several days, or several hours at high temperatures), it may lose its repeated color change function, and it will permanently maintain the red color during overheating, which is the long-term recording function. The same applies to other color varieties.Function of recordingSometimes during inspections, it is found that the temperature measuring patch applied has changed color, and immediately other thermometers are used to measure, only to find that the temperature in that area is not high. What's going on?The product introduction mentions that the temperature measuring patch can truthfully record the process of equipment heating when the inspection personnel are not present, so it is called the informant of equipment failure. It can record any overheating process. When the temperature measuring patch changes color during inspection, it definitely indicates that the area has been overheated. The overheating process may occur now or in the past period of time. If color change is found on the temperature measuring patch during inspection, immediately use a thermometer to measure the temperature. As ordinary thermometers do not have recording function, they can only measure the current temperature and cannot measure the temperature during the period of overheating. The measured temperature value is not high, indicating that the temperature in that area has already dropped, but it is also the fault point.Stick it to the teacupThe testing container for temperature measurement patches should be a quick heat transfer can, aluminum lunch box, etc. Due to the insulation function of tea cups, the thermal conductivity of the cup wall is poor. After pouring boiling water, when the temperature inside the cup is over 90 degrees, the temperature of the cup wall is often only 50-60 degrees, so it may not reach the color changing temperature and cannot change color. During testing, cigarette butts can be used for baking, or a low flame can be used, but attention should be paid to the distance, as the flame temperature can reach over 500 degrees Celsius. If the distance is too close, it is easy to burn out the patch.Temperature measurement patch errorHow to detect the actual color change temperature point of the temperature measuring patch (temperature recording label)?The temperature point error of the color changing temperature measurement patch is 1-2 oC. In order to facilitate users to test the accuracy of the product themselves, a simple and accurate testing method is introduced here; First, find a can (preferably a square mouthed one), aluminum can, or even a metal water cup or bucket, and attach a temperature measurement patch to its outer wall. Pour in some cold water, insert a thermometer, and prepare a pot of boiling water before starting the test. At that time, it is necessary to slowly pour in a small amount of boiling water. At the same time, in order to maintain a uniform temperature of the water, it is necessary to continuously stir with a thermometer. When stopping pouring hot water, the stirring can be stopped and the temperature observed; As the water temperature rises, when the thermometer value reaches the color changing temperature, the corresponding temperature measurement patch can be seen to change color. This method is simple, accurate, and easy to master. Note that the method of directly placing the temperature measuring patch on the outer wall of the kettle and burning it on a fire or electric stove cannot be used. It is forbidden to touch it with hands during the temperature measurement test. Temperature measurement patch lifespanAs long as the temperature measurement patch does not exceed the limit, it can be used for many years, especially indoors. It can be stored for 4-5 years or even longer when used in a normal environment at room temperature,. Considering the complexity and harsh environment of industrial sites, we stipulate that as long as the temperature measurement patch remains white and does not exceed the temperature limit, it can be used for 2-3 years. It is best to replace the patch that has already changed color due to overheating during maintenance in a timely manner. When storing, it should be kept in a cool and sealed place, and should not be placed near high temperatures to prevent discoloration due to overheating; Avoid mechanical damage such as direct scraping, scratching, and smashing.

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