Yuelian PW-CFT100-40L5 Rapid Temperature and Humidity Cycling Chamber

Overview

The Yuelian PW-CFT100-40L5 Rapid Temperature and Humidity Cycling Chamber is an engineered environmental test system designed for high-fidelity simulation of dynamic thermal and hygrothermal stress conditions. It operates on a forced-air convection principle with independent dual-loop PID control for temperature and humidity, enabling precise, repeatable, and traceable environmental profiles across a wide operational envelope—from –40°C to +150°C and 20–98% RH. The chamber integrates mechanical refrigeration (R404A/R23 blend), electric heating via nickel-chromium alloy elements, and steam-based humidification—each subsystem dynamically modulated to minimize thermal lag and energy conflict during rapid transitions. Its architecture meets the structural, metrological, and functional requirements of international standards including IEC 60068-2, MIL-STD-810H (via GJB150A equivalence), and ISO 16750-4 for automotive electronics qualification. The system is not intended for explosive, corrosive, volatile, or biological samples—consistent with safety-critical design constraints defined in GB/T 10592-2008 and EN 60068-3-5.

Key Features

• Linear temperature ramp rate of 5°C/min over –40°C to +125°C (unloaded), verified per GB/T 2424.5-2006 and IEC 60068-3-11
• Robust thermal insulation: 100 mm polyurethane foam core with thermal conductivity ≤0.022 W/(m·K), minimizing external heat gain and internal gradient formation
• Double-walled construction: 1.0 mm SUS304 stainless steel interior and ≥1.0 mm powder-coated cold-rolled steel exterior, resistant to oxidation and condensate corrosion
• Intelligent door system: Electrophoretically coated single-door with anti-condensation heated viewing window (tempered laminated glass + conductive film), pressure-balancing vent, and lever-actuated cam-lock mechanism
• Dual-sensor redundancy: PT100 Class A platinum resistance thermometers and capacitive RH sensors calibrated traceably to NIM (China National Institute of Metrology) standards
• Integrated safety architecture: Independent electronic overtemperature cutoff, compressor high/low-pressure monitoring, water-level protection, phase-loss detection, and surge suppression compliant with IEC 61000-4-5
• Modular refrigeration train: Hermetic scroll compressor (Copeland/Emerson equivalent), brazed-plate heat exchanger, thermostatic expansion valve, and desiccant filter—designed for long-term stability under cyclic load

Sample Compatibility & Compliance

The PW-CFT100-40L5 supports non-hazardous solid and static electronic components up to 80 kg/m³ loading density (per GB/T 2424.7-2006). Sample placement must comply with airflow integrity requirements: ≤20% volumetric occupancy and ≤33% cross-sectional blockage in the vertical air path. The chamber is certified to meet electromagnetic compatibility (EMC) per GB/T 17626.2–17626.6 and safety per GB 4793.1-2007 (IEC 61010-1). All control firmware implements audit-trail-capable parameter logging with timestamping and user authentication—supporting GLP/GMP-aligned validation workflows. Calibration documentation includes as-built temperature/humidity uniformity maps, ramp-rate verification reports, and sensor drift assessments performed at factory acceptance testing (FAT).

Software & Data Management

The embedded controller runs a real-time Linux-based OS with a 7-inch capacitive TFT display and intuitive HMI. It supports up to 100 stored programs (each with 100 segments), cycle repetition up to 999 times, and real-time graphical plotting of up to 8 channels (T, RH, setpoints, alarms). Data logging resolution is 0.01°C / 0.1% RH with configurable sampling intervals from 0.1 s to 3600 s. Historical records—including curves, events, and system states—are exportable via USB 2.0 (hot-swappable 1–32 GB FAT32 drives) or Ethernet (TCP/IP MODBUS TCP, CANopen, or custom API). Optional PC software enables remote supervision, multi-chamber synchronization, statistical process control (SPC) charting, and PDF report generation compliant with ISO/IEC 17025 documentation requirements.

Applications

This chamber serves critical reliability assessment functions across aerospace (DO-160 Section 4.9 thermal shock), automotive (ISO 16750-4, LV-124), defense (GJB150.3A–150.9A), and consumer electronics (JEDEC JESD22-A104E). Typical use cases include: accelerated life testing of PCBAs under temperature-humidity bias; solder joint fatigue evaluation via repeated thermal cycling; validation of conformal coating integrity under combined thermal/hygric stress; qualification of battery management systems (BMS) for EV applications; and pre-compliance screening for IEC 60068-2-14 (change of temperature) and IEC 60068-2-30 (damp heat, cyclic). Its performance envelope aligns with IPC-9701A for tin whisker acceleration and JEDEC J-STD-020 for moisture sensitivity level (MSL) preconditioning.

FAQ

What standards does this chamber validate against?

It complies with GB/T 2423.1–2423.4, GB/T 2423.22, GJB150.3A–150.9A, GB/T 10586-2006, and GB/T 5170.18-2005. Full compliance documentation—including calibration certificates and uncertainty budgets—is provided with shipment.

Can it perform combined temperature/humidity cycling per IEC 60068-2-30?

Yes. The controller supports synchronized T/RH ramps with programmable dwell periods, dew-point tracking, and condensation control—meeting all operational clauses of IEC 60068-2-30 Ed. 3.0.

Is the system suitable for GMP-regulated environments?

With optional 21 CFR Part 11-compliant software add-on (electronic signatures, audit trail, role-based access), it supports FDA-regulated validation protocols when deployed with IQ/OQ/PQ documentation packages.

What maintenance intervals are recommended?

Compressor oil and refrigerant analysis every 24 months; desiccant filter replacement every 18 months; PT100 sensor recalibration annually or per SOP; full preventive maintenance (fan bearings, heater continuity, door seal integrity) every 12 months.

Does it support third-party SCADA integration?

Yes. Native MODBUS TCP, CANopen, and Ethernet/IP drivers enable direct integration into Siemens PCS7, Rockwell FactoryTalk, or Ignition SCADA platforms without middleware.