Low Air Atmospheric Pressure Hypobaric Altitude Test Chambers
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Product Description：
Low pressure altitude test chamber simulates the effect of high altitude (low pressure) conditions by using vacuum pump. Air pressure at any altitude can be controlled and set. This test chamber is used to evaluate the performance and functionality of product exposing to environment at a specified altitude. 
Testing can be conducted at low pressure, under high temperature or low temperature, with single or multiple factor at the same time.
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​Item
​Specification
​Internal dimension (W*D*H)
​600*600*600mm
​Internal material
​#304 stainless steel, mirror finished
​External material
​Stainless steel with paint spray​-40~+85℃
Temperature deviation
​±2℃
​Temperature fluctuation
​±0.5℃
​Temperature uniformity
​≤2℃
​Cooling speed
​≥1℃/min in average (without loading)
Heating speed
​≥1℃/min in average (without loading)
Pressure range
​Ordinary pressure ~ 1Kpa
​Decompression time
​≤10min
​Pressurized method
​First heating/cooling, then vacuumize
​Pressure deviation
​±5%
​Insulation
High density rigid Polyurethane foam
​Test time
​0.1~999.9 h/m/s, adjustable.
​Power system
​Three-phase, 380V, 50Hz
​Safety protection device
​Protection for leakage
Over-temperature
Compressor over-voltage and overload
Heater short circuit
Water shortage
Air circulation system
Air circulation device
​Vacuumed ventilator to maintain the stable temperature
​Heating method
​Electrical heating
Refrigeration system
 Compressor
​German brand, refrigeration system with Semi-hermetic sealed refrigeration
Cooling method
​Water-cooling
​Refrigerant
​R404A and R23
Vacuum system
​Composition
Vacuum measuring system and control system
Vacuum meter measuring
Adopt pressure sensor to measure the meter, the data will be transferred into electric signal, then it’s input into controller for displaying and controlling.
​Controlling accessories
​Pressure sensor, transducer, pressure regulating valve and gas regulating valve adopt famous brands.
Control system
​Controller
​LCD touch screen, programmable control temperature and pressure
​Control accuracy
Temperature, 0.5℃. Pressure, 1.0 Pa
Display resolution
​Temperature, 0.1℃. Pressure, 0.01 Pa
Interface
​RS 232, USB or LAN, can be remote control.

Applications:
1. To simulate test environment with various altitude environments .
2. It is especially important for defense and aerospace applications where pressure and vacuum conditions are even more intense
3. Application fields: Include Aviation, aerospace, communications,  electronics, electrical appliances etc.
4. Test Purpose: to guarantee the maximum quality and reliability while  products or material might encounter at various altitude levels.

Features:
1. High performance and quiet operation
2. Space-saving designed for flush installation to wall
3. External pressure type box body structure and stainless steel tank design, rational air circulation system and scientific layout of heating, refrigerating system
4. Adopts international brand of imported parts for cooling system to improve operation reliability
5. High precision and stable performance with touch screen controller, friendly Man-Machine interface. 6. Multiple layers of safety device to easy maintenance.

Test standards: 
GB2423.25-1992
GB2423.26-1992
GJB150.3A-2009
GJB150.4A-2009
GJB150.2A-2009
GJB5170.10-200

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