Ai Sihao Instrument is one of the leading manufacturers of constant temperature and humidity test chambers in China. The company specializes in producing and distributing a wide range of high-quality testing equipment, including single-point constant temperature and humidity chambers as well as programmable models. With advanced production technology both domestically and internationally, Ai Sihao ensures reliable performance and excellent quality. We offer a one-year free warranty on all our products to ensure customer satisfaction.
When the operating current of a constant temperature and humidity test chamber becomes too high or the device fails to start properly, it can cause excessive heat generation in the resistance wire. This heat causes the bimetallic strip located above the resistance wire to bend due to thermal expansion, triggering an overload protection mechanism. Once activated, the protector immediately cuts off the power supply to prevent damage. This same protection also activates if the compressor housing becomes overheated. After the contact opens, the bimetal gradually cools down, allowing the contact to re-close, typically after a short delay. This process helps protect the system from potential electrical failures.
When repairing or adjusting the overload protector, it should be connected to a measuring circuit and the current increased until the ammeter reads 6A. At this point, the contact will open, and the time it takes for the system to reset should be recorded. Repeating this process two to three times allows for an average measurement, which can then be compared with standard parameters. If there are discrepancies, the adjustment screw can be modified accordingly. It’s important to keep the cover in place during testing, as removing it may affect the reset time and reduce accuracy.
Ai Sihao Instrument offers a comprehensive range of constant temperature and humidity chambers, including single-point models, programmable units, high-temperature and high-humidity test chambers, and more. These products are widely used across various industries for environmental testing and research purposes. Whether you're looking for a basic model or a highly advanced system, Ai Sihao has the expertise and experience to meet your needs. Our products are known for their reliability, precision, and long-term durability.
As a manufacturer with years of experience, Ai Sihao Instrument combines Taiwan technology with domestic innovation to deliver top-tier testing solutions. We have built a strong reputation in the market and continue to provide excellent service to both new and returning customers. If you're interested in learning more about our products or placing an order, feel free to reach out. We look forward to helping you find the right solution for your testing requirements.
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