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Measurement standard and method of constant temperature and humidity test chamber
The relative humidity in a constant temperature and humidity test chamber is a critical parameter for environmental testing equipment. Accurate and reliable measurement of relative humidity plays a vital role in ensuring that the required environmental conditions are met, which is essential for product reliability and performance evaluation.
According to the national standard GB2423.1, the temperature tolerance range for low-temperature testing in a constant temperature and humidity chamber is ±3°C. However, this tolerance applies to the entire working space, not just a single point or moment. It's also important to note that a ±2°C tolerance refers to an allowable deviation, not the setting range. For example, if a test requires 50±2°C, the nominal value is 50°C, and the actual set value must be exactly 50°C, not 52°C or 48°C. This is because the control system may drift slightly, and the temperature distribution within the chamber might not be perfectly uniform. Therefore, the measured temperature can vary within the allowed range (not exceeding 52°C or dropping below 48°C).
Similarly, under military standard GJB150, the maximum temperature gradient is 2.2°C. The uniformity of the temperature field refers to the consistency of temperatures across different points in the chamber at any given time. The ±2°C tolerance should never be interpreted as the range for setting the nominal value. Proper calibration and monitoring are necessary to ensure accurate results.
Yashilin brand constant temperature and humidity test chambers are designed and manufactured in compliance with various national standards, including GB/T 2423.1-2008 (low temperature test method), GB/T 2423.2-2008 (high temperature test method), GB/T 2423.3-2006 (constant damp heat method), and GB/T 10586-2006 (dry heat test chamber technical conditions). These chambers are capable of conducting a wide range of high and low-temperature, humid, and dry heat environmental tests, making them ideal for various industries such as aerospace, automotive, and electronics.
Each Yashilin test chamber is produced in Beijing, ensuring high-quality construction and precise performance. Whether you're conducting routine testing or complex environmental simulations, Yashilin provides reliable and consistent results. With advanced technology and strict quality control, these chambers meet the highest industry standards and support the development of durable and high-performance products.