English Product Name

Overview

The OK-TH Series Vertical Temperature and Humidity Controlled Chamber is an engineered environmental test system designed for precise, repeatable simulation of climatic stress conditions in accordance with international standards including IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-30 (cyclic damp heat), and MIL-STD-810G / GJB 150.3–150.4. Operating on the principle of forced-air convection combined with precision PID-controlled refrigeration and steam-based humidification, the chamber delivers stable thermal-hygrometric profiles across its full operational envelope—from extreme low-temperature freezing (-70 °C) to high-temperature baking (+150 °C), and from low-humidity desiccation (5 %RH) to saturated condensation (98 %RH). Its vertical architecture optimizes floor space utilization while maintaining structural rigidity and thermal integrity—critical for long-duration reliability testing in electronics, aerospace components, polymer formulations, and pharmaceutical packaging validation.

Key Features

• Full-color 7-inch LCD touchscreen controller with intuitive bilingual interface (English/Chinese), supporting real-time parameter monitoring, programmable multi-step profiles, and alarm history logging.
• SUS#304 stainless steel construction throughout interior and exterior chambers ensures corrosion resistance, cleanability, and compliance with ISO 14644-1 Class 8 cleanroom-compatible environments.
• Multi-layer insulated observation window with integrated conductive heating film prevents condensation and enables unobstructed visual inspection of test specimens under all humidity conditions.
• Dual-stage hermetic refrigeration system using environmentally compliant R404A/R23 refrigerants provides rapid, stable cooling without oil carryover or maintenance-intensive cascade loops.
• Robust sealing architecture featuring double-layer high-tensile silicone gaskets at door interface achieves leak rates <0.5 L/min under differential pressure, ensuring humidity retention and energy efficiency.
• Standard Ø50 mm test port (left-side mounted) accommodates external instrumentation cabling, thermocouple feedthroughs, or active sensor interfaces—fully sealed when unused.
• Comprehensive safety architecture includes over-temperature cut-off, compressor high-pressure protection, humidity sensor failure detection, and automatic power disconnection upon critical fault detection.

Sample Compatibility & Compliance

The OK-TH chamber supports a broad range of sample types—including PCB assemblies, lithium-ion battery modules, automotive ECUs, medical device housings, optical coatings, and elastomeric seals—without requiring internal modification. Its uniformity specification (±0.5 °C / ±2.5 %RH) meets the spatial homogeneity requirements of ASTM E145-22 (Standard Specification for Gravity-Convection and Forced-Ventilation Ovens) and IEC 60068-3-5 (Environmental testing — Part 3-5: Supporting documentation and guidance — Confirmation of the performance of temperature chambers). All models are supplied with factory calibration certificates traceable to NIST or equivalent national metrology institutes. Optional validation packages support IQ/OQ/PQ execution per FDA 21 CFR Part 11 and EU Annex 11 guidelines for regulated industries.

Software & Data Management

The embedded controller records time-stamped temperature and humidity data at user-selectable intervals (1–60 seconds), storing up to 10,000 hours of continuous operation history locally. Data export is supported via USB flash drive in CSV format for post-processing in Excel or statistical analysis platforms (e.g., JMP, Minitab). Optional Ethernet or RS485 interfaces enable integration into centralized lab management systems (LIMS) or SCADA networks. Audit trail functionality logs all operator actions—including setpoint changes, profile uploads, and manual overrides—with timestamp, user ID, and reason code—meeting GLP and GMP documentation requirements. Remote monitoring is available through optional web-enabled gateway modules compliant with TLS 1.2 encryption.

Applications

This chamber is routinely deployed in quality assurance laboratories for accelerated aging studies (e.g., IPC-9701 for solder joint reliability), storage condition verification (ICH Q1A–Q1E stability protocols), material hygroscopicity assessment (ASTM D5229), and qualification of conformal coatings under thermal cycling with humidity bias. In R&D settings, it supports failure mode identification in MEMS devices exposed to dew-point cycling, evaluation of adhesive bond strength degradation at elevated RH, and validation of moisture barrier efficacy in flexible OLED encapsulation. Its modular design allows seamless integration into automated test cells using PLC-triggered start/stop signals and digital I/O feedback.

FAQ

Is the chamber compatible with regulatory-compliant validation protocols?
Yes—factory-installed sensors are calibrated per ISO/IEC 17025 requirements, and optional validation kits include mapping probes, uncertainty budgets, and protocol templates aligned with ASTM E2297 and EU GMP Annex 15.

Can the controller be configured for fully automated test sequences?
Yes—the touch interface supports up to 100 programmable steps per profile, including ramp/soak transitions, humidity modulation during temperature holds, and conditional branching based on real-time sensor feedback.

What maintenance intervals are recommended for long-term reliability?
Compressor oil inspection every 2,000 operating hours; condenser coil cleaning quarterly; humidity sensor recalibration annually or after 500 cycles—documented in the included Maintenance Logbook.

Does the system support third-party software integration?
Yes—Modbus RTU (RS485) and TCP/IP protocols are natively supported; API documentation and driver libraries (LabVIEW, Python, .NET) are provided with enterprise licensing.

Are custom internal configurations available for non-standard test specimens?
Yes—custom shelf layouts, reinforced load-bearing trays, inert gas purge ports (N₂/Ar), and additional test ports can be engineered per customer mechanical drawings and approved per ASME BPE or ISO 15190 specifications.