PW Environmental Test Chamber PW-CTH100-40
| Brand | PW |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | PW-CTH100-40 |
| Instrument Type | Upright |
| Cooling Method | Air-Cooled |
| Temperature Range | −40 °C to +150 °C |
| Humidity Range | 20 %RH to 98 %RH |
| Temperature Uniformity | ±1.0 °C |
| Temperature Stability | ±1.0 °C |
| Humidity Uniformity | ±2.0 %RH |
| Humidity Stability | ±1.0 %RH |
| Heating Rate | −40 °C to +100 °C in ≤45 min (unloaded) |
Overview
The PW Environmental Test Chamber PW-CTH100-40 is an upright, air-cooled temperature and humidity controlled chamber engineered for precision environmental simulation in quality assurance, materials validation, and accelerated aging studies. Designed with energy-efficient thermal management architecture—including optimized compressor cycling, high-efficiency evaporator/condenser heat exchange, and low-thermal-mass insulation—the PW-CTH100-40 delivers stable climatic conditions across a wide operational envelope while minimizing power consumption and thermal inertia. Its core function relies on closed-loop PID control of refrigeration, heating, and humidification subsystems, enabling reproducible generation and maintenance of specified temperature–humidity profiles per IEC 60068-3-5 and ISO 16750-4 test standards. The chamber’s stainless steel interior, double-glazed observation window, and sealed door gasket ensure long-term corrosion resistance and minimal ambient leakage—critical for maintaining integrity during extended dwell cycles or ramp-hold tests.
Key Features
- Air-cooled refrigeration system with scroll compressor and microchannel condenser for reduced maintenance and improved thermal response
- High-precision dual-sensor feedback loop: platinum RTD (Pt100) for temperature and capacitive polymer sensor for relative humidity, both calibrated traceable to NIST standards
- Energy-optimized control logic that dynamically adjusts compressor duty cycle and heater output based on real-time load estimation and setpoint proximity
- Upright configuration with 100 L internal volume (W×D×H: 450 × 450 × 495 mm), supporting standard test specimens up to 300 mm in height
- Integrated over-temperature, over-humidity, and dry-run protection circuits compliant with EN 61000-6-2 EMC requirements
- Touchscreen HMI with intuitive navigation, multi-segment programmable profile editor, and real-time trend display of chamber parameters
Sample Compatibility & Compliance
The PW-CTH100-40 accommodates a broad range of non-hazardous solid and packaged samples—including electronic assemblies, polymer films, pharmaceutical packaging, automotive components, and coated substrates—without requiring modification to the chamber interior. Its uniformity performance (±1.0 °C / ±2.0 %RH) meets the spatial homogeneity criteria defined in ASTM E145-22 (Standard Specification for Gravity-Convection and Forced-Ventilation Ovens) and supports testing protocols aligned with IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-30 (damp heat cyclic), and GB/T 2423.3-2016 (Chinese national standard equivalent to IEC 60068-2-78). The unit is CE-marked and conforms to RoHS Directive 2011/65/EU. While not certified for Class I Div 1 hazardous locations, it operates safely in general laboratory and industrial QC environments under normal atmospheric conditions.
Software & Data Management
The embedded controller supports optional USB data logging (up to 30 days at 1-second intervals) and RS485 Modbus RTU communication for integration into centralized lab monitoring systems. An optional PC-based software suite enables remote parameter setting, real-time graphing, automated report generation (PDF/CSV), and audit trail export compliant with GLP and GMP documentation practices. All logged data includes timestamp, operator ID (if configured), and event markers for alarm activation, program start/stop, and manual overrides—ensuring full traceability required for FDA 21 CFR Part 11–aligned workflows when paired with user-defined electronic signatures.
Applications
- Accelerated life testing of lithium-ion battery modules under thermal cycling and humidity stress
- Stability assessment of medical device packaging per ISO 11607-1 for barrier integrity validation
- Thermal shock pre-conditioning of PCBAs prior to solderability or functional testing
- Moisture absorption/desorption kinetics analysis of hygroscopic polymers (e.g., PA6, PET, PBT)
- Environmental stress screening (ESS) of aerospace-grade adhesives and sealants
- Calibration verification of portable hygrometers and thermometers using reference-grade chamber conditions
FAQ
What is the maximum sample mass the PW-CTH100-40 can accommodate without compromising performance?
The chamber is rated for up to 15 kg of total payload; exceeding this may affect temperature/humidity recovery time and uniformity—users should consult the load derating curve in Section 4.2 of the operation manual.
Does the unit support Ethernet connectivity or only RS485?
Standard configuration includes RS485 Modbus RTU; Ethernet (TCP/IP) and Wi-Fi modules are available as factory-installed options under part numbers PW-ETH-OP and PW-WIFI-OP, respectively.
Is third-party calibration certification included with purchase?
A factory-as-tested calibration report (covering temperature and humidity at three points: low/mid/high range) is provided. Full ISO/IEC 17025-accredited calibration with uncertainty budget requires separate service order via authorized PW calibration centers.
Can the chamber operate continuously at −40 °C and 98 %RH simultaneously?
No—simultaneous extreme low temperature and high humidity is physically constrained by dew point limitations. At −40 °C, the maximum achievable RH is <1 %RH; the specified humidity range applies within the operational temperature band of +10 °C to +85 °C.
What safety certifications does the PW-CTH100-40 hold?
CE marking per Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU; EMC compliance per EN 61326-1; electrical safety tested per EN 61010-1.
