With China's entry into the WTO, the country's requirements for product quality, safety, and other aspects have become increasingly strict. For household appliances to circulate in the market, they must pass 3C certification, and temperature rise testing is an important testing item for major inspection bureaus or certification centers. In the national standard GB4706.1-2005/IEC60335-1:2004, there are provisions regarding heating and winding temperature rise, such as "11.1 In normal practice, appliances and their surrounding environment should not reach excessively high temperatures;
The working principle of a paperless recorder is to measure temperature and humidity parameters and store them in internal memory at predetermined time intervals. During recording, the temperature change trend can be observed in a timely manner, or an analysis and summary of the overall temperature change can be made after the measurement is completed. With the development of computer technology, it is also possible to connect the recorder to a PC and use software to complete its extended functions. This instrument can be used to determine that there have been no incidents that endanger product safety during the storage and transportation process, experimental process, and other related processes.
Temperature recorders are now being tested, certified, and used in the home appliance industry IT、 It has been applied in vaccine cold chain, food storage and transportation, museum relics, archive management, building materials testing and acceptance, agriculture and animal husbandry, important medical and health places, etc. For example, a temperature recorder can record temperature changes for a long time, providing a reference data basis for whether mechanical and electrical products are abnormal during operation. For example, washing machines, refrigerators, air conditioners, juicers, microwave ovens, etc. (of course, they each have their own standards), all need to undergo safety testing (temperature rise testing is a part of safety regulations). Furthermore, most heating appliances may require safety testing, which means that most companies with mechanical and electrical laboratories or related laboratories may use temperature recorders
1. Application in the home appliance industry
With the current policy of sending household appliances to rural areas in China, the government has put forward higher requirements for household appliances in the rural market, effectively ensuring the interests of farmers in choosing good and trustworthy products.
According to experts in the home appliance industry, the expansion of the "Home Appliance Going to the Countryside" project will bring up to 30 billion yuan in domestic demand. Therefore, in the current situation where home appliance exports are facing difficulties and inventory pressure is caused by poor exports, using the macroeconomic regulation of "Home Appliance Going to the Countryside" to stimulate domestic demand is undoubtedly a new opportunity for home appliance enterprises to turn the tide. At the same time, the unique market environment in rural areas has also raised higher quality requirements for household appliances sold in rural areas. The key to how companies can win by surprise in the face of this opportunity is to ensure quality. The best way is to follow the standards of the testing bureau, one is to use the testing standards used by the testing bureau, and the other is to use the instruments used by the testing bureau. A temperature recorder can help companies gain product quality trust, pass national testing smoothly, and achieve smooth product sales. This approach can effectively save the cost and time of testing while ensuring the quality of the product.
2. Applications in the IT industry
IT is a booming industry, the fastest growing industry, an industry that has created countless myths, and an industry with the most diverse testing standards. No one can guarantee that a computer that works continuously for more than 10 hours will not cause safety issues due to overheating. Often, an important file that has just been completed is lost due to sudden crashes, causing some obstacles to work. For example, if the CPU temperature is too high, it can cause the computer to crash. Will the high temperature during the processing cause processor failure? This is beyond doubt, therefore both the plate making and the completed machine need to undergo temperature rise detection. Therefore, temperature recorders play a crucial role in the IT industry. With a temperature recorder, the computer temperature can be checked at any time to ensure normal operation and get rid of the troubles caused by crashes.
3. Application in food storage and transportation
As is well known, the process of food storage and transportation is a relatively long period of time, and the shelf life of food is closely related to food temperature and humidity. The relative equilibrium humidity during food preservation is an important indicator for ensuring food safety, as it directly affects the growth of bacterial colonies. For example, in the equilibrium relative humidity range of 95% RH to 91% RH, the bacteria that are prone to growth are Salmonella, Burkholderia, Lactobacillus, mold, and yeast. Balanced relative humidity is the humidity value obtained from the surrounding air without exchanging water between a substance and the air. So, in order to ensure that these products maintain normal temperature and humidity and normal storage and transportation, the control of environmental climate and packaging must be carefully indicated. Meanwhile, many foods stored in excessively dry conditions can have a slightly unpleasant taste. In response to this situation, real-time monitoring and recording of temperature and humidity changes are required. So how to ensure food safety and stability, temperature recorders are particularly important.
In the process of long-distance transportation or sea transportation of frozen and refrigerated food, the best way to ensure that the goods are still in the specified temperature and humidity conditions at the destination is to place a temperature recorder in the cargo hold, which will faithfully record the temperature and humidity changes throughout the transportation process. Whether the carrier is responsible will also be immediately known. Currently, well-known fast food companies such as KFC are using temperature recorders. 5. Application in vaccine cold chain
During the cold chain storage and transportation of vaccines, vaccines, and other biological products from the finished product warehouse of pharmaceutical factories to the vaccination of relevant populations, real-time monitoring and recording of their environmental temperature can ensure their quality and ensure the effectiveness of immunization. The temperature recorder conveniently and reliably solves this problem.
Different vaccines have different requirements for storage and transportation environment temperature. To ensure the safety of bacteria and vaccines during storage and transportation, it is necessary to conduct fully automatic detection and recording of the environmental temperature throughout the storage and transportation process, in order to improve the reliability of the data. At this point, the temperature recorder can perfectly perform this function, and it can still record for a long time without external power supply.
4. Application in museum cultural relics and archive management
This is another field of application for temperature recorders. The paper of archives can be stored for a longer period of time under suitable temperature and humidity conditions, but once the temperature and humidity conditions are damaged, the paper will become brittle and important information will be lost. It is necessary to record the temperature and humidity of archives to prevent the occurrence of malignant accidents. The use of the paperless recorder that I have summarized will simplify the work of temperature and humidity recording, and also save the cost of cultural relic preservation, making this work more scientific and not affected by excessive human factors.
5. Application in building material experiments
In the drying process of building materials, especially concrete, we should pay attention to its drying trend, which is one of the indicators for evaluating products. The paperless recorder I summarized can record this data and provide it to building material researchers, which will provide more reliable basis information for construction plans. Especially in military buildings, time is life. Accurately grasping the drying time of concrete is the first priority to defeat the enemy, providing a guarantee for effectively providing living forces to the battlefield. This function can be completed by a temperature recorder.
6. Application in agriculture and animal husbandry
Agriculture and animal husbandry production, especially the production of some cash crops, require detailed recording of temperature and humidity values during their seedling stage. For example, to determine the relationship between the growth characteristics of certain seedlings and temperature, humidity, etc. Of course, not every seedling requires temperature monitoring, as forestry is a relatively crude production mode.
7. Application in building acceptance
Mainly reflected in the acceptance of intelligent buildings. Due to the large number of acceptance projects in the construction industry, in addition to HVAC indicators, other building department requirements such as radiation intensity and formaldehyde concentration that meet human health indicators also need to be monitored. These indicators are directly related to human health. If testers rashly enter these places and keep records for a long time without knowing these indicators, it is irresponsible for their personal health. The temperature recorder will ensure the maximum protection of testers' personal safety while obtaining reliable data. Of course, all of these quantities should be converted into voltage measurements during measurement.
8. Application in medical and health facilities
According to the requirements of the draft technical specifications for clean operating department buildings in hospitals, the temperature and humidity of the operating room must be controlled within a certain range: that is, the temperature should be between 22... 25 ℃; Relative humidity 45% RH... 60% RH. Appropriate environmental temperature and humidity are very beneficial for both operators and patients. When the room temperature exceeds 28 ℃ and the humidity is greater than 70% RH, it is easy to have reactions such as stuffiness, sweating, irritability, fatigue, etc., which can easily affect stable emotions and agile thinking, and prevent the operator's technical level from being fully utilized. At the same time, patients may also experience symptoms such as fast heart rate and excessive sweating, which increases the difficulty of surgery; When the room temperature is below 20 degrees, operators wearing only surgical gowns will feel cold, which can easily affect the sensitivity and accuracy of the operation, especially the subtle movements of the fingers. Exposed patients are more prone to complications such as colds due to their weakened immune system caused by trauma. The indoor humidity is low, and the floating dust on the surface of objects is suspended in the air due to changes in airflow caused by certain actions such as laying sheets or opening and closing doors. The temperature difference between the inside and outside of the operating room is large, and the air in some areas forms a vortex flow after opening the door. The wind speed increases to about four times the original wind speed in the operating room, and at this time, the surface attachments of objects quickly float in the air. According to a survey by the CDC in the United States, there is a risk of airborne infection when the number of airborne bacteria in the operating room air is between 700-800 cfu/m3. From the results, it can be seen that the air pollution is most severe from the time of laying the sheet during surgery to 2 hours after laying the sheet, which is the surgical stage. Due to the influence of gravity, indoor dust can directly settle onto surgical wounds, or onto the operator's hands or surgical instruments. Therefore, strengthening the control of air pollution during this period is crucial for preventing postoperative incision infections. These requirements require health and epidemic prevention departments to confirm the compliance of operating rooms in various hospitals through their own monitoring. Temperature recorders are a good method to reduce personnel waste and ensure the fairness of law enforcement.
The above is a summary of the application of temperature recorders. In fact, temperature recorders are no longer only used in industries such as medical and food where temperature recorders are frequently used. The use of temperature recorders is not limited to these fields at all. Currently, the scope of use of temperature recorders is widely used in many fields, especially in situations where real-time recording of temperature and humidity changes throughout the entire process is required, and it is becoming increasingly common. The scope of use is constantly expanding and extending. At present, with the acceleration of industrial control automation, especially for industry, temperature recorders have become an indispensable tool. Based on the changes recorded by temperature recorders, temperature and humidity changes in storage, production, transportation and other processes can be reflected at any time. Through professional PC analysis software, it helps enterprises to carry out more scientific and effective management, analysis and induction, greatly improving work processes and efficiency.
