Programmable Constant Temperature And Humidity Test Chamber -40℃ To +50℃
The Test Chamber is a heavy-duty programmable constant temperature and humidity test chamber designed for reliability testing of electronics, electrical components, plastics, and raw materials. It validates product performance under extreme cold, dry heat, steady-state humidity, and cyclic damp heat conditions. Compliant with IEC, ISO, and GB/T standards, this walk-in chamber is engineered for laboratory and industrial production environments requiring long-term, high-frequency operation.
Compliance Standards
The SN881C-3600L fully conforms to:
- IEC60068-2-1:2007 (Test A: Cold)
- IEC60068-2-2:2007 (Test B: Dry heat)
- IEC60068-2-78:2012 (Test Cab: Damp heat, steady state)
- IEC60068-2-30:2005 (Test Db: Damp heat, cyclic 12h+12h cycle)
All standards are IDT (Identical) to international specifications, ensuring global compliance for your export quality validation.
Temperature & Humidity Accuracy
The system delivers ± 0.5°C temperature fluctuation and ± 2.5%RH humidity fluctuation under no-load conditions. Temperature deviation is maintained at ± 2.0°C, while humidity deviation is ± 3.0%RH. The controller resolution is 0.1°C / 0.1%RH, suitable for precise material and component characterization.
Industrial Durability
Designed for long-term, high-frequency industrial use. Features low-temperature scroll compressors, Sweden SWEP heat exchangers (SUS#316), and SSR solid-state relay control with anti-integral saturation PID. The structure includes 100mm rigid polyurethane foam insulation and a heavy-duty bottom track rated at ≤100Kg/m², ensuring durability for 24/7 production testing.
Safety Protection
Comprehensive safety features include: compressor overheating/overcurrent/overpressure protection, adjustable over-temperature protection, fan motor overheat protection, leakage protection, heating tube no-air dry burning protection, and power outage memory with auto-resume.
Programmable Controller
The 7-inch true color touchscreen controller supports up to 120 program groups with 100 segments per program (12,000 segments total). It includes RS232/RS485 communication, real-time curve display, and PLC-like logic relay outputs (AND, OR, NOR, XOR).
Technical Parameters
| Parameter |
Specification |
| Product number |
SN881C-3600L |
| Product brand |
SINUO |
| Chamber inner size |
W2400 * D1000 * H1500 mm |
| External chamber dimensions |
W2600 * D2100 * H2100 mm |
| Temperature range |
-40℃ → +50℃ |
| Heating rate |
≥2～3℃/min (average over the whole process, no load) |
| Cooling rate |
≥0.7～1℃/min (average over the whole process, no load) |
| Temperature display resolution |
0.1℃ |
| Temperature fluctuation |
±0.5℃ |
| Temperature deviation |
±2.0℃ |
| Humidity range |
20%-98% RH |
| Humidity fluctuation |
±2.5%RH |
| Humidity deviation |
±3.0%R.H |
| Motor noise |
≤75dB (A) |
| Power Supply |
AC3￠5W 380V 50Hz (R, STN three-phase five-wire plus ground wire) |
| Power |
Overall 8KW |
Temperature and humidity fluctuation data measured under no-load conditions
Noise measured in a soundproof room with ambient temperature of 25°C and low echo; A-weighting used to test average value of 9 points; each test point 2 meters horizontally from noise source and 1 meter high from ground
Temperature & Humidity Control Range
Refer to the temperature and humidity controllable range chart (no moisture source or heat load)
Key Features
- Advanced Thermal Control: BTC balanced temperature control + DCC intelligent cooling capacity + DEC intelligent electrical control
- World-Renowned Components: Well-known compressor, SWEP heat exchanger, Chiming refrigeration accessories, AC&R double spoiler fins
- Energy-Efficient Design: Cold balance method with automatic cooling flow adjustment vs. traditional fixed systems
- Robust Construction: A3 board spraying outer wall, SUS#304 brushed stainless steel inner wall, 100mm insulation thickness
- User-Oriented Operation: 7-inch touch display, multi-language (English/Chinese), password protection, and scheduled start/stop
- Low Noise: ≤75dB(A) measured under standard conditions (2m horizontal distance, 1m height, 9-point average)
