Dual-85 Thermal Cycling and Humidity Test Chamber
| Brand | OEM / Custom Brand |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Price | USD 2,600 (FOB) |
| Internal Dimensions (W×D×H) | 500×400×400 mm / 600×500×500 mm / 700×600×600 mm |
| External Dimensions (W×D×H) | 1200×1950×1100 mm / 1300×2000×1200 mm / 1450×2100×1350 mm |
| Temperature Range | -40°C to +150°C |
| Humidity Range | 20–98% RH |
| Heating Rate | ~4.0°C/min |
| Cooling Rate | ~1.0°C/min |
| Temperature Uniformity | ±2.0°C |
| Temperature Fluctuation | ±0.5°C |
| Humidity Fluctuation | ±2.5% RH |
| Humidity Deviation | ±3.0% RH |
| Refrigerant | R404A/R23 (ODP = 0) |
| Controller | 7-inch TFT color LCD touchscreen (bilingual English/Chinese interface) |
| Power Supply | AC220V±5%, 50Hz, single-phase three-wire or AC380V±5%, 50Hz, three-phase five-wire |
Overview
The Dual-85 Thermal Cycling and Humidity Test Chamber is an engineered environmental simulation system designed to replicate accelerated stress conditions—specifically 85°C temperature and 85% relative humidity—combined with sub-zero thermal cycling, for reliability validation of electronic components, automotive modules, PCB assemblies, and polymer-based materials. It operates on a dual-chamber or stacked-chamber architecture (configurable as two-tier or three-tier units), enabling independent or synchronized control of temperature and humidity across multiple test zones. The chamber employs a dual-stage refrigeration circuit (primary R404A loop + secondary R23 cascade stage) to achieve stable low-temperature performance down to −40°C while maintaining high-humidity capability up to 98% RH at elevated temperatures. Its thermodynamic design complies with fundamental principles of psychrometric control and forced-air convection uniformity, ensuring repeatable exposure profiles required for qualification testing per international environmental stress standards.
Key Features
- Dual-stage modular refrigeration system: High-efficiency hermetic compressors (French Tecumseh or Chinese Taikang) with R404A/R23 eco-friendly refrigerants (zero ozone depletion potential); integrated water-immersion leak detection for long-term refrigerant integrity assurance.
- Separate water and electrical routing in the distribution panel: Minimizes risk of short circuits and improves service accessibility under IEC 61000-6-4 EMC-compliant installation protocols.
- Double-layer insulation: Rigid polyurethane foam core (≥100 mm thickness) combined with fiberglass reinforcement, achieving thermal resistance >0.8 m²·K/W and reducing ambient heat gain by >40% versus single-layer alternatives.
- Corrosion-resistant construction: Interior chamber fabricated from SUS#304 stainless steel; exterior options include powder-coated galvanized steel or full SUS#304 cladding for cleanroom or high-salinity environments.
- Intelligent PID-controlled humidification: Embedded nickel-chromium heating element with ceramic insulator support ensures rapid steam generation and precise RH regulation without condensate carryover.
- 7-inch TFT touchscreen controller: Supports programmable multi-step profiles, real-time data logging (timestamped), alarm history with event codes, and USB export of CSV-formatted test records.
Sample Compatibility & Compliance
This chamber accommodates diverse sample geometries—from compact IC packages and sensor housings to automotive ECUs and medical device enclosures—via configurable stainless-steel shelves and a standard 50 mm diameter cable port. It meets structural and operational requirements of key international standards including: IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-14 (thermal shock), IEC 60068-2-30 (damp heat, cyclic), MIL-STD-810G Method 502.6 (low temperature), Method 507.5 (humidity), and GJB 150.3/4/9 (Chinese military environmental testing). All models are factory-calibrated per ISO/IEC 17025 traceable procedures, with optional NIST-traceable certificate of calibration available upon request. The system supports GLP/GMP-aligned audit trails when operated with external data acquisition software compliant with FDA 21 CFR Part 11 requirements.
Software & Data Management
The embedded controller stores up to 100 user-defined test programs, each supporting up to 99 segments with ramp/soak logic, humidity coupling modes (fixed RH, dew point lock, or relative saturation tracking), and conditional jump commands. Logged data includes time-stamped temperature, humidity, setpoint deviation, compressor status, and alarm events—all exportable via USB flash drive in CSV format for post-processing in MATLAB, Python Pandas, or statistical process control (SPC) platforms. Optional Ethernet-enabled remote monitoring allows integration into centralized lab management systems using Modbus TCP or OPC UA protocols. Firmware updates are performed via secure OTA (Over-The-Air) mechanism with SHA-256 signature verification to ensure integrity.
Applications
This chamber is routinely deployed in quality assurance laboratories for HALT/HASS pre-screening, solder joint fatigue assessment under thermal-hygric stress, conformal coating adhesion validation, battery electrolyte stability evaluation, and accelerated aging of optical lenses and adhesive bonds. End-user sectors include Tier-1 automotive suppliers validating ADAS sensors, contract manufacturers performing IPC-A-610 Class 3 compliance testing, aerospace component vendors executing DO-160 Section 4/5 environmental qualification, and biomedical device firms conducting ISO 10993-12 extractables studies under controlled hygrothermal conditions.
FAQ
What does “Dual-85” refer to in this chamber’s designation?
It denotes the chamber’s capability to maintain simultaneous 85°C temperature and 85% RH conditions—commonly specified in JEDEC JESD22-A101 (steady-state damp heat) and IPC-9701 (solder interconnect reliability) test protocols.
Can the chamber perform rapid thermal cycling between −40°C and +150°C?
Yes—within defined constraints: typical ramp rates are ~1.0°C/min (cooling) and ~4.0°C/min (heating) across the full range, with transition times verified per IEC 60068-2-14 Annex A requirements.
Is the controller compliant with FDA 21 CFR Part 11 for electronic records?
The base controller provides audit trail functionality (user login, parameter changes, alarm events); full Part 11 compliance requires integration with validated third-party LIMS or ELN software supporting electronic signatures and role-based access control.
What safety protections are built into the refrigeration system?
Compressor high/low pressure cutouts, phase failure detection, motor overheat sensors, refrigerant leak alarms, and redundant temperature limiters (hardware-independent from main controller) are standard.
Do you offer IQ/OQ documentation packages?
Yes—factory-issued Installation Qualification (IQ) and Operational Qualification (OQ) protocols aligned with ASTM E2500 and ISO 9001:2015 are available as optional add-ons, including test scripts, acceptance criteria, and executed reports.
