English Product Name

Overview

The OK-TH Series Fully Automated Temperature and Humidity Controlled Environmental Test Chamber is an engineered platform for precise, repeatable simulation of climatic stress conditions in laboratory and industrial quality assurance environments. Designed around a robust dual-stage cascade refrigeration architecture and high-fidelity PID-controlled humidification/dehumidification subsystems, the chamber delivers stable thermal and hygrometric profiles across extended test durations. Its operational principle integrates forced-air convection with optimized airflow distribution—ensuring uniform heat and moisture transfer throughout the working volume per ISO 16750-4 and IEC 60068-3-5 requirements. The system supports both steady-state and cyclic environmental profiles, making it suitable for reliability validation of electronic assemblies, automotive components, aerospace hardware, packaging materials, and pharmaceutical primary packaging under defined climatic load conditions.

Key Features

• Modular chamber configurations: Six standard internal volumes (80 L to 1000 L), all customizable for non-standard specimen dimensions upon request.
• Dual-stage refrigeration circuit with R404A (high-temp stage) and R23 (low-temp stage) refrigerants, enabling operation down to -70 °C while maintaining low acoustic emissions (<65 dB(A) at 1 m).
• SUS#304 stainless steel interior and exterior construction—resistant to corrosion, condensation accumulation, and cleaning agents used in GMP-compliant facilities.
• Touchscreen controller with real-time graphical display of setpoints, actual values, ramp/soak profiles, and alarm history; supports user-defined multi-step programs with up to 99 segments.
• Integrated humidity generation via steam injection and dehumidification via cold-finger condensation, achieving 20–98 %RH range with <±2.5 %RH uniformity at 60 %RH/25 °C.
• Standard accessories include two adjustable stainless steel shelves, four casters with locking mechanism, four leveling feet, and one 50 mm diameter cable port with silicone gasket.

Sample Compatibility & Compliance

The OK-TH chamber accommodates a broad spectrum of sample types—including PCBAs, lithium-ion battery modules, medical device housings, polymer films, and sterile barrier systems—without compromising environmental fidelity. Internal chamber geometry and airflow design conform to IEC 60068-3-5 guidelines for air velocity and turbulence control, minimizing localized thermal gradients. All models are certified to meet MIL-STD-810G Method 502.5 (Low Temperature), Method 501.5 (High Temperature), and Method 507.5 (Humidity), as well as GB/T 2423.1–2423.4 series standards. Optional validation packages support IQ/OQ documentation aligned with ISO/IEC 17025 and FDA 21 CFR Part 11 requirements for electronic records and signatures.

Software & Data Management

The embedded controller logs timestamped temperature and humidity data at user-selectable intervals (1 s to 60 min), storing up to 3 years of continuous records internally. Data export is supported via USB 2.0 or optional Ethernet interface (MODBUS TCP or HTTP API). For enterprise integration, OK-TH chambers are compatible with third-party LIMS and MES platforms through standardized OPC UA or CSV batch export protocols. Audit trail functionality records operator login/logout events, parameter changes, and alarm acknowledgments—fully traceable for GLP/GMP audits. Remote monitoring and alarm notification (email/SMS) are available via optional cloud gateway module.

Applications

• Accelerated aging studies of elastomers, adhesives, and conformal coatings under combined thermal-hygrometric stress.
• Pre-conditioning of test specimens prior to mechanical, electrical, or optical evaluation per ASTM D618 or ISO 291.
• Environmental stress screening (ESS) of avionics and military-grade electronics per MIL-STD-883 Method 1010.8.
• Stability testing of Class II and III medical devices per ISO 11607-1 and AAMI TIR17.
• Validation of packaging integrity for sterile barrier systems exposed to tropical or desert climatic profiles.
• Qualification of battery thermal management systems under dynamic charge/discharge cycles within controlled ambient envelopes.

FAQ

What is the standard warranty coverage for the OK-TH chamber?
The unit carries a 24-month limited warranty covering parts and labor for defects in materials and workmanship, excluding consumables (e.g., humidifier tanks, filters) and damage from improper installation or misuse.
Can the chamber be integrated into an existing facility monitoring network?
Yes—via optional Ethernet module supporting MODBUS TCP, OPC UA, or RESTful API endpoints for real-time telemetry and centralized supervision.
Is calibration certification included with delivery?
A factory-issued as-found/as-left calibration report traceable to NIST or equivalent national metrology institute is provided. UKAS or ISO/IEC 17025-accredited calibration is available as an add-on service.
Are custom temperature/humidity profiles programmable?
Yes—the controller supports complex multi-segment profiles with independent ramp rates, dwell times, and transition logic, including conditional branching based on sensor feedback.
Does the system comply with FDA 21 CFR Part 11 for electronic records?
With the optional audit trail and electronic signature module enabled, the system meets baseline technical controls for Part 11 compliance—including role-based access, immutable logs, and secure user authentication.