High and low temperature alternating heat and humidity test chamber
The high and low temperature alternating heat and humidity test chamber is a critical tool used in environmental testing to simulate various climatic conditions. It allows for the controlled variation of both temperature and humidity, enabling manufacturers and researchers to evaluate the performance and durability of products under extreme conditions. Understanding its principles and specifications is essential for effective use.
Wind Speed in High and Low Temperature Alternating Heat and Humidity Test Chamber
The wind speed within the test chamber plays an important role in the accuracy of the test results. According to industry standards, the wind speed inside the chamber should generally be kept below 1.7 m/s during environmental testing. This ensures minimal disturbance to the test sample and maintains the authenticity of the test environment. However, for certain specialized chambers designed for rapid temperature changes or multi-factor tests (such as temperature, humidity, and vibration), the wind speed may need to be increased to 2-3 m/s to ensure uniform temperature distribution. Thus, the appropriate wind speed depends on the specific purpose of the test.
Temperature Uniformity in High and Low Temperature Alternating Heat and Humidity Test Chamber
To accurately simulate real-world conditions, it's crucial that the test sample experiences consistent temperature and humidity throughout the chamber. National and military standards such as GJB150.1-86 specify that the temperature near the test sample should remain within ±2°C of the target temperature, with a maximum gradient of 1°C/m or 2.2°C in total. These limits ensure that all parts of the sample are subjected to the same environmental conditions, leading to more reliable and repeatable results.
Temperature Fluctuation in High and Low Temperature Alternating Heat and Humidity Test Chamber
Temperature fluctuation is one of the easier parameters to control in these test chambers. Most modern environmental testing equipment can maintain a fluctuation range of ±0.3°C, ensuring stable and accurate test conditions. This level of precision is vital for conducting reliable long-term tests and evaluating product performance over time.
As mentioned earlier, the high and low temperature alternating heat and humidity test chamber is a versatile and essential tool in industries such as electronics, aerospace, automotive, and materials science. It helps engineers and scientists assess how products perform under varying environmental conditions, ensuring quality and reliability before they reach the market.
Usage
The P series high and low temperature alternating heat and humidity test chamber is widely used across multiple industries, including electrical engineering, electronics, aerospace, aviation, instrumentation, and material testing. It is ideal for accelerated damp heat testing, temperature cycling tests, and other environmental evaluations to determine how a product performs under real-world conditions.
Features
â— Human-machine interaction touch screen input system, easy to learn and powerful, allowing users to monitor program curves and processes on the LCD screen;
â— Supports up to 120 groups of programs with 1200 segments, and up to 999 cycles. Each segment can be set for a maximum of 99 hours and 59 minutes;
â— Equipped with RS232 communication interface for PC control and monitoring. Optional RS485, USB, and data storage devices for convenient operation;
â— Features 9 sets of PID parameter adjustments for stable and precise control;
â— Includes program correction, backup, start, power failure memory, key lock, and other functions;
â— Offers multiple alarm functions that display faults on the screen for quick troubleshooting;
â— Unique air circulation design ensures even temperature and humidity distribution;
â— Vacuum double glass with automatic defrost function for clear observation of the test samples;
â— Front-mounted automatic water inlet for easy humidification water addition.
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