I. Introduction to High and Low Temperature Test Chambers

High and Low Temperature Test Chambers are widely used in industrial and scientific research fields to simulate and test the performance and reliability of products under extreme temperature conditions. They expose materials, components, and finished products to extremely cold or hot environments to ensure their reliability and stability in real-world applications.

Principle:
High and Low Temperature Test Chambers control cooling and heating systems to achieve temperature cycling within preset ranges, allowing test samples or products to be exposed to different temperature conditions. Temperature cycles can be rapid or prolonged to simulate real-world temperature variations.

II. Applications of High and Low Temperature Test Chambers

These chambers are widely used in electronics, automotive, aerospace, medical devices, materials research, and other fields. During product development, manufacturing, and quality control, they help determine heat resistance, cold resistance, stability, and other performance metrics to ensure product reliability under varying temperature conditions.

III. Features of High and Low Temperature Test Chambers

a. Temperature Range: Covers a wide range, typically from as low as -70°C or lower to several hundred degrees Celsius.
b. Temperature Control Precision: Modern chambers offer high precision with minimal temperature fluctuations.
c. Humidity Control (Optional): Advanced models can control humidity to simulate humid or hot environments.
d. Safety Measures: Equipped with over-temperature protection, leakage protection, and other safety features.
e. Programmable Control: High-end models allow preset temperature cycles and durations.

IV. Types of Tests Conducted

Temperature Variation Test: Evaluates product adaptability and stability under rapid temperature changes.
High-Temperature Aging Test: Simulates long-term exposure to high temperatures.
Low-Temperature Freezing Test: Assesses reliability and cold resistance in extreme cold.
Thermal Shock Test: Tests tolerance to rapid switching between high and low temperatures.
Constant Temperature & Humidity Test: Evaluates performance and lifespan under stable conditions.

V. Advantages and Challenges

Advantages:

Provides repeatable, precise test conditions.
Helps identify design and manufacturing flaws, improving product reliability and quality.
Challenges:

Some industries require even more extreme temperature ranges, demanding higher design and manufacturing standards.
Certain materials may exhibit nonlinear behavior under extreme temperatures, requiring careful data interpretation.
VI. Technical Specifications

Key parameters to consider when purchasing include internal chamber space, temperature range, heating/cooling rates, etc.

VII. Structural Composition

Chassis: CNC-machined for durability and aesthetics, with ergonomic handles.
Interior/Exterior: Stainless steel (SUS304) interior panels; A3 steel exterior with a clean finish.
Insulation: Mineral wool minimizes heat loss.
Observation Window: Equipped with lighting and tempered glass for clear visibility.
Test Port: A 50mm diameter port for external power/signal cables.
Controller: Touchscreen interface with temperature lock to prevent accidental adjustments.
Air Circulation: Low-noise centrifugal fan ensures uniform temperature distribution.
Refrigeration System: Located below the workspace, featuring “Tecumseh” compressors.
Mobility: High-quality PU casters for easy relocation and stabilization.

VIII. Usage Instructions

Place samples inside, set desired temperature ranges and cycles, then start the test. Analyze results afterward for improvements.

IX. Precautions

a. Read the Manual: Review safety and operation guidelines before use.
b. Sample Selection: Choose appropriate samples for accurate results.
c. Maintenance: Regular calibration and upkeep ensure accuracy and longevity.

X. Refrigeration Principles

Compressor Refrigeration:

Similar to household refrigerators.
Refrigerant is compressed, condensed, expanded, and evaporated to absorb heat.
Refrigerant Cycle:

Uses pumps to circulate refrigerant (e.g., Freon, ammonia).
Heat absorption in the evaporator and release in the condenser.
Both methods regulate internal temperatures for testing.

XI. Maintenance Tips

Regular Cleaning: Remove dust, especially from condensers and evaporators.
Ventilation: Ensure proper airflow around the chamber.
Refrigeration Checks: Inspect compressors, condensers, and fans.
Calibration: Periodically verify temperature control accuracy.
Refrigerant Replacement: Follow manufacturer guidelines.
Electrical Inspection: Check controllers, sensors, and fuses.
Seal Integrity: Replace damaged door/window seals to prevent leaks.
Avoid Overloading: Operate within rated parameters.
Moisture Protection: Keep electrical components dry.
Scheduled Maintenance: Plan cleaning, lubrication, and calibration.
Environment: Place in dry, vibration-free areas.
Professional Repairs: Contact experts for major issues.
XII. Market Pricing

Prices vary based on brand, model, specifications, and features, ranging from thousands to hundreds of thousands of RMB. Research thoroughly to find a chamber that fits your needs and budget.

Note: Prices may differ by brand, model, configuration, and region. Compare options before purchasing.