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This post was last edited by 955559 on 2018-8-8 at 16:29. The dog days generally fall between the start of summer and the end of summer, and they represent the times of the year when temperatures are highest, along with high humidity and stuffy conditions. The \"three hot periods\" in 2018 lasted for 40 days in total. The first hot period ran from July 17th to 26th, the second hot period began on July 27th, while the third hot period started on August 16th and ended on August 25th. http://www.levelmeter.cn/uploads/image/20180726/1532585185.jpg After the onset of the hot season, harmful heat factors take hold, and \"sauna-like\" days characterized by high temperatures, high heat levels, and high humidity will occur frequently. It not only has a certain impact on human health, but it also easily causes malfunctions in many instruments and devices. In fact, many instruments are very sensitive to environmental temperature and humidity; they must meet certain temperature and humidity conditions in order to function. For example, inverters must pay close attention to heat dissipation in summer; otherwise, the field transistors can easily be burned out ； For scanning electron microscopes, the images have noise ； Abnormalities such as abnormal counting rates can occur in X-ray spectrometers. Especially during the hot, humid, and temperature-varying summer months, it is necessary to increase the frequency of inspections and tests for instruments and equipment. A comprehensive inspection of the plant’s instruments, equipment, and facilities is carried out to ensure effective protection for the plant’s rainproof operation as well as safe and stable production during the summer. In addition to the effects of rain, certain instruments require a proper temperature to be maintained; either too high or too low temperatures can cause distortion in most precision instruments, affect the accuracy of tests and the lifespan of electronic components. It is also important to avoid sudden changes in temperature. For example, halogen moisture detectors should be kept away from direct sunlight and vibrations; they must also be free from temperature fluctuations and power supply instability. There should be sufficient space around the device to allow for heat dissipation, and a proper distance should be maintained between the device and the substance being tested, in order to prevent heat buildup that could lead to inaccurate measurements. In addition to the high temperature and high humidity characteristics during the hot summer months, there are many other factors that instruments need to be considered in regard to. Maintenance personnel must also take targeted measures based on the specific properties of each instrument. For example, with some small precision instruments, it is necessary to avoid direct human contact during operation to prevent temperature-related effects. In hot weather, people tend to sweat; operators should wear gloves to avoid direct contact with the instruments. Finally, instruments should also be regularly cleaned and serviced. After being in use for a period of time, instruments accumulate a certain amount of dust inside. It is best to have a professional maintenance engineer, or under their guidance, open the instrument’s casing to remove the dust and clean it out. Additionally, necessary monitoring, calibration, and recording should be carried out to prevent the instrument from failing to function properly. Automated instruments generally have a high level of protection, usually IP66/67, which provides good sealing properties and helps to prevent the entry of moisture and dust. Nevertheless, regular maintenance will undoubtedly further extend the lifespan of these instruments.