EWJ Series High/Low Temperature & Humidity Test Chamber
Environmental simulation chamber for testing materials by simulating conditions at desired temperature and humidity levels
This series of test chambers are designed to meet demanding testing needs while keeping operation efficient and quiet. Each test chamber benefits from a 3D-engineered design that refines the internal structure, airflow system, and cooling performance. These improvements help achieve consistent results, reduce energy consumption, and maintain low noise during operation, making them a dependable choice for temperature and humidity evaluations across different industries.
- High-temperature exposure
- Low-temperature testing
- Constant temperature and humidity conditions
- Alternating high and low temperatures
- Combined temperature and humidity cycling
- 2 cable ports (Ø100 mm)
- Hour meter
- 1 observing window (insulating glass with transparent heating film)
- 4 caster wheels
4 leveling feet - 2 sets of specimen racks
- 1 sample power control terminal
1 RS-485 communication port
1 RJ-45 Ethernet port - USB port
Sterilization function: (Not available for models 01 and ET)
Application: Allows the test chamber to be used for mold incubation tests.
Additional Components
- Ventilation system
- Ozone sterilization unit
- Top-exhaust design with a compact, balanced layout that makes better use of space, reduces installation constraints, and limits the impact on ambient temperatures.
- Advanced noise reduction measures keep sound levels below 57 dB(A), similar to the volume of a normal conversation.
- Wide operating range for temperature and humidity with consistently reliable performance.
- High-precision control: temperature fluctuation within ±0.5 °C, temperature deviation within ±1.5 °C, and humidity deviation within ±3.0% RH.
- Incorporates industry-leading ELV electronic expansion valve technology, allowing intelligent compressor power adjustment that cuts energy consumption by about 30% compared to traditional thermal expansion valves while extending compressor lifespan.
- Stainless steel rack can be repositioned to fit samples of different heights. For heavier loads, optional reinforced shelves are available, supporting up to 80 kg per tier.
- Side-mounted cable ports on both walls allow flexible connections for power or instrumentation from any direction. Multi-port configurations can also be customized to handle setups requiring a larger number of cables. Durable soft rubber plugs maintain a tight seal across a wide temperature range and have a long service life.
- A large, clear observation window with multi-layer tempered glass and an anti-condensation heating element makes it easy to monitor samples throughout testing without fogging.
- The interior is precision-welded with automated equipment and sealed using high-integrity gaskets to keep the chamber airtight.
- For water supply, a dual tank system combines a fixed reservoir and a removable handheld tank that can be refilled during operation without interrupting the test process.
| Model EW (with humidity control) ET (without humidity control) | | | | | | | | | ||
| Chamber volume (L) | 100 | 200 | 400 | 1000 | 100 | 200 | 400 | 1000 | ||
| Performance | Temperature range | -40～ 150℃ (180℃) | -80～ 150℃ (180℃) | |||||||
| Temperature fluctuation | ≤0.5℃ | |||||||||
| Temperature deviation | ±1.5℃ | |||||||||
| Temperature uniformity | 1.0℃ (humidity test,humidity>90%RH) | |||||||||
| 1.5℃ (temperature< 100℃) | ||||||||||
| 2.0℃ (no other conditions and additional glass door) | ||||||||||
| Humidity range (only models with humidity control) | (20～98%)RH / (10～98) ℃ | |||||||||
| Relative humidity deviation (only models with humidity control) | ±2.0%RH(>75%RH),±3.0%RH(≤75%RH) | |||||||||
| Temperature rise rate | -35→ 150℃ | -40→ 150℃ | -70→ 150℃ | |||||||
| ≤45min | ≤45min | ≤60min | ≤50min | |||||||
| Temperature drop rate | 20→-35℃ | 20→-40℃ | 20→-70℃ | |||||||
| ≤45min | ≤40min | ≤60min | ≤70min | |||||||
| Internal dimensions (mm) | W | 500 | 500 | 600 | 1000 | 500 | 500 | 600 | 1000 | |
| H | 480 | 730 | 830 | 980 | 480 | 730 | 830 | 980 | ||
| D | 500 | 600 | 800 | 1000 | 500 | 600 | 800 | 1000 | ||
| External dimensions (without protrusion) (mm) | W | 700 | 700 | 800 | 1200 | 700 | 700 | 800 | 1200 | |
| H | 1581 | 1786 | 1886 | 2036 | 1581 | 1786 | 1886 | 2036 | ||
| D | 1479 | 1507 | 1707 | 1928 | 1479 | 1507 | 1707 | 1928 | ||
| Power supply | 380V (three phase four wire protective grounding wire) | |||||||||
| Condensing method | Air-cooled/water-cooled | |||||||||
For air-cooled models, performance specifications are based on an ambient temperature of 25 °C and relative humidity of ≤85% measured with the chamber empty. For water-cooled models, reference conditions are an ambient temperature between 15 °C and 35 °C, relative humidity of ≤85%, and cooling water temperature of ≤ 28℃, also measured without test samples inside the chamber.
