emerging industry applications

• User Guide for Environmental Test Equipment

  Apr 26, 2025

  1. Basic Concepts Environmental test equipment (often referred to as "climate test chambers") simulates various temperature and humidity conditions for testing purposes.                                                                                    With the rapid growth of emerging industries such as artificial intelligence, new energy, and semiconductors, rigorous environmental testing has become essential for product development and validation. However, users often face challenges when selecting equipment due to a lack of specialized knowledge.   The following will introduce the basic parameters of the environmental test chamber, so as to help you make a better choice of products.   2. Key Technical Specifications (1) Temperature-Related Parameters 1. Temperature Range   Definition: The extreme temperature range in which the equipment can operate stably over long periods.   High-temperature range:  Standard high-temperature chambers: 200℃, 300℃, 400℃, etc.  High-low temperature chambers: High-quality models can reach 150–180℃. Practical recommendation: 130℃ is sufficient for most applications.   Low-temperature range: Single-stage refrigeration: Around -40℃. Cascade refrigeration: Around -70℃. Budget-friendly options: -20℃ or 0℃.                                         2. Temperature Fluctuation   Definition: The variation in temperature at any point within the working zone after stabilization.   Standard requirement: ≤1℃ or ±0.5℃.   Note: Excessive fluctuation can negatively impact other temperature performance metrics.   3. Temperature Uniformity   Definition: The maximum temperature difference between any two points in the working zone.   Standard requirement: ≤2℃.   Note: Maintaining this precision becomes difficult at high temperatures (>200℃).   4. Temperature Deviation   Definition: The average temperature difference between the center of the working zone and other points.   Standard requirement: ±2℃ (or ±2% at high temperatures).   5. Temperature Change Rate   Purchasing advice: Clearly define actual testing requirements. Provide detailed sample information (dimensions, weight, material, etc.). Request performance data under loaded conditions.(How many produce you going to test once?) Avoid relying solely on catalog specifications.   (2) Humidity-Related Parameters 1. Humidity Range   Key feature: A dual parameter dependent on temperature.   Recommendation: Focus on whether the required humidity level can be maintained stably.   2. Humidity Deviation   Definition: The uniformity of humidity distribution within the working zone.   Standard requirement: ±3%RH (±5%RH in low-humidity zones).   (3) Other Parameters 1. Airflow Speed   Generally not a critical factor unless specified by testing standards.   2. Noise Level   Standard values: Humidity chambers: ≤75 dB. Temperature chambers: ≤80 dB.   Office environment recommendations: Small equipment: ≤70 dB. Large equipment: ≤73 dB.   3. Purchasing Recommendations Select parameters based on actual needs—avoid over-specifying. Prioritize long-term stability in performance. Request loaded test data from suppliers. Verify the true effective dimensions of the working zone. Specify special usage conditions in advance (e.g., office environments).

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