IEC 60068-2-78 Walk-in Temperature and Humidity Test Chamber 3.38m³ Temp. -40~+100℃
IEC 60068-2-78 Walk-in Temperature and Humidity Test Chamber 3.38m³ Temp. -40~+100℃
Product information:
This equipment is suitable for high and low temperature tests on electrical, electronic, mechanical and large parts, semi-finished products, finished products, etc. It can simulate high and low temperature changes to test the quality and reliability of products and parts.
Applied Standard:
IEC60068-2-1:2007 Environmental Testing-Part 2-1: Tests-Test A: Cold, IDT
IEC60068-2-2:2007 Environmental Testing-Part 2-1: Tests- Test B-Dry heat, IDT
IEC60068-2-78:2001 Environmental Testing-Part 2-78: Tests-Test Cab: Damp heat, steady state, IDT
IEC60068-2-22:2005 Environmental Testing Part 2-22: Tests Test N: Change of temperature, IDT
Features:
- The test system structure design should be advanced and reasonable, the manufacturing process should be standardized, and the appearance should be beautiful and generous.
- The main functional components of the test box should all adopt world famous brand configuration (high gold content), advanced and reliable technical principles, and optimal control of noise and energy saving.
- The matching and assembly of parts are well matched. The main functional components should all adopt original imported parts with international advanced level. It improves the safety and reliability of the equipment and ensures the long-term and high-frequency use requirements of users.
- The equipment has good operability, maintainability, good temperature stability and durability, good safety performance, no pollution to the environment and no harm to personal health.
- All wires in the control cabinet should have serial numbers and numbers printed by special equipment, and the lines should be clear.
Sample Restrictions:
- Testing and storage of samples of volatile substances;
- Testing and storage of samples of corrosive substances;
- Testing or storage of biological samples;
- Testing and storage of samples of strong electromagnetic radiation sources.
Technical Parameter:
| Inner box volume | 3.38m³ |
| Temperature range | -40~+100℃ |
| Temperature uniformity | ±2.0℃ (In steady state) |
| Temperature fluctuation | ±0.5℃ (In steady state) |
| Temperature deviation | ±2.0℃ (In steady state) |
| Heating rate | About 3℃/min (average rate over the whole process under no load) |
| Cooling rate | Average 1℃/min (average rate over the whole process under no load) |
| Humidity range |
20%〜98%RH
|
| Humidity fluctuation | ±3.0%RH (at constant state) |
| Humidity deviation | +2.0%RH～-3%RH (＞75%RH); ±5.0%RH (≤75%RH) (at constant state) |
| Cooling method | Water-cooled type |
| Power supply voltage | 380V±10% (three-phase five-wire); 50Hz±10% |
Air conditioning system:
| Working principle | Forced ventilation internal circulation, balanced temperature and humidity control method |
| Air circulation device | Extended shaft centrifugal fan, long shaft external motor drive |
| Air heating method | Use special spiral nickel-chromium alloy resistive electric heater with large heat dissipation area; PID+SSR drive control; |
| Water cooling method | Water-cooled heat exchanger |
| Dehumidification method | Refrigeration light tube surface dehumidification |
| Heating method | Nickel-chromium alloy electric heating wire heating, PID adjustment, actuator: solid-state relay |
Equipment use conditions:
- Voltage: three-phase 380V±10%; 50±10Hz; three-phase four-wire + ground wire;
- Ambient temperature: <30℃;
- Ambient humidity: < 85%R.H (25℃);
- Atmospheric pressure: 86～106Kpa;
- Environmental conditions: no strong vibration around the equipment site, no strong electromagnetic field interference, no high concentration of dust and corrosive substances, no direct sunlight or other heat sources.
- The equipment should be placed horizontally in a well-ventilated test room, and sufficient space should be left around for operation and maintenance.
- Water tower: (15 refrigeration tons, 12 cubic meters/H)
- Power: 32KW 80A
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