Application:
Altitude Temperature (Humidity) Chamber/ Temperature (Humidity) Pressure Chamber is used for highlands environmental simulation in condition of low-pressure, low-temperature to do reliable test for products by air transport.
Low Pressure Temperature Chamber applies to packages for automatic components in defense industry and space industry, automotive parts, battery, LCD screen modules and related products, which will be affected by combined condition of low pressure, temperature and high altitude.
Test standard:
ASTM D4169, SCHEDULE I; ASTM D6653
Specification:
| Item | Specification |
| Internal volume | 100L, 225L, 652L,800L,1000L (customized) |
| Temperature & Pressure Performance |
| Test temperature | -70~+150℃(as per requirement) |
| Temperature fluctuation | ≤±0.5℃ (Atmosphere pressure, without load) |
| Temperature deviation | ≥100℃, ±3.0℃ (Atmosphere pressure, without load) <100℃, ±2.0℃ (Atmosphere pressure, without load) |
| Cool down | +100℃to -70℃, 1℃/min in average (Atmosphere pressure, non-linear without load) |
| Heat up | -70℃to +100℃, 3℃/min in average (Atmosphere pressure, non-linear without load) |
| Pressure range | Atmosphere pressure~1kPa (adjustable) |
| Pressure deviation | ≤±2.0kPa (≥40kPa) ≤±0.5 kPa (2kPa~40kPa) ≤±0.1kPa(≤2kpa) |
| Pressure recovery rate | 10kPa/min (adjustable) |
| Pressure release time | Atmosphere pressure~1kPa ≤30min (under room temperature) |
| Chamber Structure |
| The equipment consists of five basic parts: test chamber, temperature cycling system, low pressure vacuum system and program control system. -Test chamber includes pressure vessel, door, insulation layer, enclosure seal, test signal output hole and external flange, inside chamber lighting, etc. -Temperature cycling system has refrigeration system and heating system. -Low pressure vacuum system includes vacuum pump, vacuum gauge, vacuum solenoid cut-off valve, vacuum relief valve, vacuum trimming valve, oil trap, pipes and hoses, as well as standard connectors. -Control system has English interface, to control low pressure system, temperature cycling system, refrigeration unit, valve opening process, test data processing (collect, store & download), etc. |
| Refrigeration System |
| Refrigeration compressor | German Bock semi-closed compressor |
| Evaporator | Fin heat exchanger, Copper coil heat exchanger |
| Condenser | Shell and tube heat exchanger / Fin heat exchanger |
| Evaporative condenser | Brazed plate heat exchanger |
| Refrigerant | R404A/R507 (Ozone depletion index 0) |
| Vacuum System |
| Vacuum pump | Imported mechanical pump |
| Vacuum sensor | UNIK 5072 |
| Control System |
| Controller | PLC touch screen controller Chinese and English are optional |
| Safety Protection Device |
| Refrigeration system | Compressor overpressure protection Compressor motor overheating protection Compressor motor overcurrent protection |
| Test chamber | Adjustable over temperature protection Test space temperature fuse Extreme over temperature protection of air conditioning channel. Fan motor overheating protection Heater fuse overcurrent quick fuse Wall heater extreme over temperature protection. |
| Others | Vacuum pump motor overcurrent & overload protection Power source phase sequence and lack of phase protection. Electric leakage protection. |
