Constant Temperature and Humidity Environmental Test Chamber

Overview & Applications

The Constant Temperature and Humidity Environmental Test Chamber is designed to simulate various temperature and humidity environments for testing products under controlled conditions. It is suitable for evaluating the performance and reliability of:

• Electronics and electrical appliances
• Food products
• Automotive components
• Rubber, plastic, and metal products

This chamber meets standards such as GB/T2423 and GJB150A1/4, ensuring stable performance under harsh environmental conditions. It enables manufacturers to predict and improve the quality and reliability of their products.

Systematic overview

• Test Box: Provides high/low temperature and humidity conditions, including alternating tests.
• Refrigeration System: Ensures precise cooling and low-temperature testing.
• Heating System: Delivers stable high-temperature environments.
• Air Duct System: Ensures uniform air circulation for consistent testing.
• Control System: Maintains precise environmental parameters and allows automated operation.
• Safety Devices: Protects both the chamber and the operator.

Main Technical Specifications

Standards Compliance

GB/T2423.22-87Nb, GJB1032-90, MIL-STD-2164/(E/C), GB/T2423.4-93, GB/T2423.34-86, GJB150.9-86

Industrial Design & Manufacturing

Test Box Body

• Structure: Integral design including box body, refrigeration, air conditioning, control cabinet, and refrigerating unit (located at the bottom).
• Box Material: 1.2mm SUS304 stainless steel, with 100mm polyurethane foam insulation for superior thermal efficiency.
• Door: Single-door with double-line silicone rubber seal and multi-layer hollow glass observation window (300 × 275 mm) with anti-frost heating.
• Shelving: Two adjustable stainless steel strip shelves.
• Condensate Drain: Provided at the bottom.

Observation & Lighting

• Equipped with a 20W AC12V halogen lamp for interior visibility.

Refrigeration System

Principle

The refrigeration system provides precise cooling, low-temperature, and constant temperature control, with automatic energy regulation for efficiency and reliability.

Key Components

• Compressor: French Taikang full-closed compressor with high- and low-pressure cycles.
• Oil Separator: Imported “Ai” ALCO oil separator to extend compressor life.
• Heat Exchanger: Swedish Alfa Laval or SWEP brazed plate heat exchangers, designed for high heat transfer and corrosion resistance.
• Vibration Control: Dual damping spring system to reduce vibration and stress on pipelines.
• Evaporator: Located in the air duct for rapid heat transfer via forced circulation.
• Auxiliary Components: Italian Castel solenoid valves, Sporlan expansion valves, Danish Danfoss condensing pressure controllers, and other imported accessories.
• Energy Regulation: Adjustable evaporation temperature and hot-gas bypass to optimize energy use while maintaining performance.
• Low-Temperature Pipeline: High-quality oxygen-free copper with nitrogen-filled welding for durability.
• Cooling Mode: Air-cooled, with user-selectable options.
• Refrigerant: R404a.

Air Circulation System

The chamber includes an internal air duct system to ensure uniform temperature and humidity. Air is circulated through the heater and evaporator before being blown back into the chamber, maintaining a stable environment for testing.

Control System

• Temperature Measurement: Pt100 RTD sensors
• Humidity Measurement: Pt100 platinum resistance sensors
• Controller: Japanese RKC96*96 temperature controller with PID control and automatic test functions
• Display: Digital screen for set temperature and humidity
• Accuracy: ±2℃
• Operation Mode: Constant operation
• Electrical Components: Reliable brands such as Schneider, OMRON, Delixi, and Taiwan water level float switches.

Why Choose the Test Chamber:

Constant Temperature and Humidity Environmental Test Chamber, Reliable and precise, it simulates extreme temperature and humidity for diverse products. Energy-efficient refrigeration, advanced control systems, stainless steel construction, and uniform air circulation ensure accurate, repeatable testing. Ideal for electronics, automotive, food, plastics, and metals, meeting international standards for quality and performance.