English Product Name

Overview

The OK-TH Series Temperature and Humidity Controlled Environmental Test Chamber is a precision-engineered environmental simulation system designed for rigorous reliability validation across aerospace, automotive electronics, consumer appliances, defense systems, and materials science laboratories. It operates on the principle of forced-air convection combined with dual-stage refrigeration and steam-based humidification to deliver stable, repeatable thermal-hygrometric profiles. Unlike basic thermal chambers, this series integrates ISO/IEC 17025-aligned control architecture—capable of executing standardized temperature cycling, steady-state humidity exposure, and combined temperature-humidity stress sequences per MIL-STD-810, IEC 60068-2, and GB/T 2423 test protocols. Its robust thermal insulation (high-density polyurethane foam, ≥100 mm thickness), hermetic sealing, and low-noise compressor system ensure minimal energy drift and long-term operational stability under continuous duty cycles.

Key Features

• Microprocessor-based 7-inch color touch-screen controller with intuitive menu navigation, real-time data logging, and seamless English/Chinese language switching.
• Double-layer high-tension silicone gasket seal between door and chamber body ensures leak-tight integrity and sustained humidity retention over extended test durations.
• Multi-layer laminated observation window with integrated indium tin oxide (ITO) conductive film prevents condensation while enabling unobstructed, glare-free visual monitoring of specimen behavior.
• Full SUS#304 stainless steel construction (interior and exterior) guarantees corrosion resistance, ease of decontamination, and compliance with cleanroom-grade maintenance requirements.
• Dual-stage refrigeration circuit utilizing environmentally approved R404A/R23 mixed refrigerant enables rapid ramping across extreme low-temperature ranges (down to −70 °C) without performance degradation.
• Integrated safety architecture includes over-temperature, over-humidity, compressor overload, and sensor failure detection—all triggering immediate audible/visual alerts and hardware-level power disconnection.

Sample Compatibility & Compliance

The OK-TH chamber accommodates a broad range of physical sample types—from printed circuit boards (PCBs) and lithium-ion battery modules to polymer composites and coated metallic substrates—without requiring internal modification. Standardized 50 mm diameter test port allows external signal or power feedthrough for in-situ electrical parameter monitoring (e.g., impedance spectroscopy, leakage current). The system meets structural and procedural requirements of multiple international standards, including: IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-78 (steady-state damp heat), IEC 60068-2-30 (cyclic damp heat), MIL-STD-810G Method 502.6 (low temperature), Method 501.6 (high temperature), and GJB 150.3–150.4 (Chinese military environmental testing). Optional calibration certificates traceable to NIST or CNAS are available upon request.

Software & Data Management

The embedded controller supports USB export of time-stamped temperature/humidity logs (CSV format) with configurable sampling intervals (1–60 seconds). For enterprise integration, optional RS485/Modbus RTU or Ethernet TCP/IP communication enables remote supervision via SCADA or LIMS platforms. Audit trail functionality records all operator actions—including setpoint changes, mode transitions, and manual overrides—with timestamp and user ID. While not FDA 21 CFR Part 11-compliant out-of-the-box, the system can be validated for GLP/GMP environments through documented IQ/OQ/PQ protocols and third-party software add-ons supporting electronic signatures and data integrity controls.

Applications

This chamber serves as a foundational tool in quality assurance workflows for accelerated aging studies, solder joint reliability assessment, moisture sensitivity level (MSL) classification per J-STD-020, conformal coating adhesion evaluation, and packaging permeability testing. In R&D labs, it supports formulation optimization of hygroscopic polymers and validation of thermal management strategies for EV power electronics. Its programmable multi-step profiles enable complex test sequences such as “soak at 85 °C/85 %RH for 96 h → ramp to −40 °C at 1 °C/min → hold for 2 h,” replicating real-world environmental stress histories experienced by field-deployed equipment.

FAQ

What temperature and humidity accuracy specifications does the OK-TH chamber achieve under steady-state conditions?

Steady-state temperature uniformity is maintained within ±0.5 °C; humidity uniformity is ±2.5 %RH across the working volume, verified per IEC 60068-3-5.

Can the chamber be customized for non-standard internal dimensions or special mounting configurations?

Yes—OK offers OEM engineering support for bespoke chamber geometries, reinforced floor plates, additional test ports, or integrated vibration isolation mounts.

Is remote monitoring and control supported via network protocols?

Standard configuration includes RS485 Modbus RTU; optional Ethernet module enables TCP/IP connectivity and integration with centralized lab automation systems.

What documentation is provided for regulatory audits?

Factory calibration report, CE declaration of conformity, RoHS compliance statement, and full mechanical/electrical schematics are included. IQ/OQ documentation templates are available upon order.

How is humidity generated and controlled during extended high-RH tests?

Steam humidification via stainless steel immersion heater ensures rapid RH response and eliminates water droplet carryover; PID-controlled ultrasonic humidifier is available as an alternative for ultra-low particulate applications.