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Rapid-rate Temp Change Test Chamber (Environmental Stress Screening)
Applications :
Applicable to environmental adaptability and reliability test in such industrial units as electronics, electrical
appliance, battery, plastics, food, paper product, vehicle, metal, chemistry, building material, research
institution, inspection and quarantine bureau, university etc..
Ⅳ.Main Technical parameters | |
1. Chamber (Water cooled ,ambient temperature +25℃,no load ) | |
1.1 Workspace volume | W1000 × D800 × H 1000 mm |
1.2 Exterior size | W 1600 × H 2330 × D 3195 mm (Approx ) |
2. Temperature | |
2.1 Temperature range | -70℃~+150℃ |
2.2 Temp Deviation | ≦±2.0℃ |
2.3 Temp Stability | ±0.5°C |
2.4 Temp Uniformity | ≤±2.0°C |
2.5THeating up time | From -40⁰C to up to +85⁰C, linear 20⁰C/min (Dead load 30Kg iron) |
2.6 Cooling time | From +85⁰C to up to -40⁰C, linear 20⁰C/min (Dead load 30Kg) iron without heating |
2.7 Temp Control ramp | From 20°C to 85°C (20°C/min) +85°C dwell for 23 minutes, From 85°C to -40°C (20°C/min)-40°C dwell for 23 minutes From -40°C to 20°C (20°C/min) in 3 minute ramp |
*Temperature performance test is based on the relevant provisions of IEC60068 -3 standard measurement; sensor placed in the unit outlet | |
Ⅴ,Chamber Structure | |
Overall structure and chamber was composed of three parts as below. Insulation box, separate refrigeration units, and electrical control cabinet. | |
1.Insulation box | wall material: high-quality carbon steel with static color spray inner wall material: SUS304 # matte stainless steel plate Insulation materials: rigid polyurethane foam insulation layer + glass fiber. |
2.Door | Single door ,left open ,Heating wire was installed at the door frames to prevent condensation at low temperatures. |
3Observation window | With observation window(specific size according to design) multi-hollow electric insulation coated glass prevent condensation effectively |
4.Cable port | Φ100 mm located on right sides with rubber stopper and plastic cover |
5.Lighting device | LED One type located on observation window |
6. Heater | High quality nickel-chromium wire electric heater, non contact control (SSR) |
7.Condensate drain outlet | With workroom condensate and condensate drain |
8.Shelf for samples | stainless steel sample holder 2pcs,Adjustable, load capacity 30kg/ layer |
9.Mobile Casters | Mobile Casters *4 with foot cups |
10.Electric control box | Total power circuit breaker, over-temperature protection. |
Ⅵ,Freezing system | |
1. Compressor | Bock /Bizer Semi-Hermetic Compressor from Germany |
2. Refrigerant | Environmental-friendly refrigerant: R404A ,R23 |
3. Condenser | Shell and Tube condenser(Water -cooled) |
4. Evaporator | Fin-type multi-stage automatic load capacity adjustment, No frost in long- term use of low temperature and humidity conditions |
5. Other accessories | Use internationally-known brand, such as high precise expansion valve, oil extractor, dryer and many other accessories. |
6.Refrigerant flow control | Adjust energy consumption output and control automatically to the refrigeration system. |
7.Refrigerant flow control | Adjust energy consumption output and control automatically to the refrigeration system. |
Ⅷ. Electrical control system | |
1. Control cabinet | A. Emergency stop switch B. Power switch C. Over-temperature protection D.RS-485 interface |
3. Protection System | A. Heater protection switch if no water B.Heater over-current circuit breaker C.Circulating fan over-current overload protection D. Compressor high voltage protection switch E. Compressor overheat protection switch F. Compressor over-current protection switch G. Over-voltage under-phase protection switch H. Circuit Breakers I. Leakage switch J.Zero-crossing gate fluid power controller |
5. Alarm | Equipment stops running and sends audible alarm when the above protection appears, meanwhile, fault, causes and solutions will be displayed on the screen. |