Benchtop Environmental Chamber

Product Specification

Testing Standards of Our Benchtop Environmental Chamber

• GB/Bb T2423.2-89 high temperature test method                          
• GB2423.1-89 test A: low temperature test method 6
• Ab IEC60068-2-1 low temperature test method                            
• GJB150.4-1986 test at low temperature
• EIA – 364-59 test at low temperature                                              
• IEC60068-2-38 temperature cycle
• IEC60068-2-78 constant   temperature                                           
• IEC60068-2-30   temperature cycle
• EIA – 364-31C temp resistance                                                      
• GB/T2423.3 constant  heat test method

For all types of electronic products, including quality inspection of electrical appliances, communications, instruments, automobiles, plastics, metals, food, chemicals, building materials, medical, and aerospace products.

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Benchtop Environmental Test Chamber Features

1. The unique design of the box within the wind circulation structure. It can ensure that under the test conditions with the case of uniformity within the box within ± 2 ℃.
2. The unique design of the humidity test when the top-of-the-box anti-drip design. It can ensure live tests from water short circuits and surface water pollution.
3. Unique refrigerant servo valve flow control. This climatic chamber can save more than 30% of the power. It has a United States PWM combination design and low-temperature working conditions. The heater does not take part in the work through the PWM technology to control the refrigeration unit refrigerant flow and flow. Through the pipeline, the hot bypass pipe three-way flow changes to achieve the studio temperature automatically constant. This way, in low-temperature conditions, can achieve a 30% reduction in energy consumption, the machine power control in 8.5KW or less.
4. The climate test chamber Uses the latest environmentally friendly adsorption drying processor.
5. It can effectively control the product when the surface temperature condensates.
6. The refrigeration room is fully sealed and soundproofed to reduce machine noise and box resonance. And machine noise control within 75.

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Control System of the Test Chambers

Refrigeration System of the Test Chamber

Defrost Cycle

• 800-cycle defrost time, defrosting guarantee within 2 hours each time
• Integration test reach 25% of the energy saving in the province’s electricity.

PWM Cold Control & Refrigerant Servo Valve

• Unique refrigerant servo valve flow control
• Power saving more than 30%, with the United States PWM combination design
• In low-temperature working conditions, the heater does not participate in the work.
• Through the PWM technology to control the refrigeration unit’s refrigerant flow
• Through the pipeline, a hot bypass pipe, three-way flow adjustment is used to achieve a constant studio temperature automatically.
• This way, in low temperature conditions, a 30% reduction in energy consumption.
• The machine power control is 8.5 kW or less.

System Reliability & Energy Efficiency

• The newly developed refrigeration system improves the refrigeration circuit reliability, saving electricity 30%
• The refrigerant servo control valve flow calculation saves electricity 30%, reduces flow time, and energy saving is more than 50%

Intelligent Control & Certification

• Preventing electromagnetic interference by the SGS certification controller
• At least 32 digital soft path matching with the Times development and software upgrade function

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Refrigeration system
Operation mode	Mechanical compression cascade refrigeration mode
Refrigerating compressor	Piston compressor
Evaporator	Finned heat exchanger (concurrently used as dehumidifier)
Condenser	Plate type heat exchanger
Throttling device
Control mode of refrigerator	1. The PLC (Programmable Logic Controller) of control system will automatically control the service condition of refrigerator according to test condition. 2. Condensing pressure regulating valve (cooling water flow regulator) 3. Evaporating pressure regulating valve (prevent evaporator from icing) 4. The cooling circuit for the air return of compressor 5. Energy regulating circuit
Protection System against Condensation	The protection system consists of a dehumidifying evaporator which prevents condensation forming on the specimens as they heat-up after tests at low temperatures.
Refrigerant	R404A/R23 Ozone wastage index: 0

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