Other Brands OK-TH Series Temperature and Humidity Controlled Environmental Test Chamber

Overview

The OK-TH Series Temperature and Humidity Controlled Environmental Test Chamber is an engineered solution for accelerated environmental stress testing of electronic components, automotive modules, aerospace hardware, and medical devices under precisely regulated thermal and hygrothermal conditions. Based on forced-air convection and dual-stage refrigeration architecture, the chamber delivers stable, repeatable control across wide operational envelopes—from extreme cold (-70 °C) to high-temperature bake (+150 °C), coupled with programmable humidity levels (20–98 %RH). Its design adheres to fundamental thermodynamic principles governing heat transfer, moisture diffusion, and condensation dynamics in enclosed volumes, enabling validation of product reliability per internationally recognized environmental simulation standards.

Key Features

• High-fidelity color TFT touchscreen controller with real-time graphing, data logging, and bilingual interface (English/Chinese) for global lab integration
• Dual-stage hermetic compressors using environmentally compliant R404A/R23 refrigerant blends—optimized for low acoustic emission (<65 dB(A)) and extended service life under continuous cycling duty
• Full SUS#304 stainless steel construction (interior and exterior) ensuring corrosion resistance, cleanroom compatibility, and long-term dimensional stability
• Multi-layer insulated observation window with integrated ITO (indium tin oxide) conductive film—enabling unobstructed visual monitoring without thermal distortion or fogging
• Double-lip high-tensile silicone gasket seal between door and chamber body, tested to maintain integrity at ≤1×10⁻⁵ mbar·L/s helium leak rate
• Standard Ø50 mm feedthrough port (left-side mounted) for external power, signal, or sensor cabling—equipped with removable rubber grommet and grounding lug
• Integrated safety architecture including over-temperature cutoff, compressor high-pressure shutdown, humidity sensor fault detection, and emergency power disconnect with LED fault-code display

Sample Compatibility & Compliance

The OK-TH chamber accommodates samples up to 1000 L internal volume (OK-TH-1000 model), supporting both benchtop and rack-mount configurations. Its uniformity performance (±0.5 °C / ±2.5 %RH) and stability metrics meet the spatial and temporal requirements defined in MIL-STD-810G Method 502.5 (Temperature Shock), Method 501.6 (High Temperature), Method 502.6 (Low Temperature), and IEC 60068-2-30 (Damp Heat, Cycling). It is routinely deployed in GLP-compliant QA labs for qualification per ISO/IEC 17025, and supports FDA 21 CFR Part 11 audit trails when paired with validated data acquisition software. Optional calibration certificates traceable to NIST or PTB standards are available upon request.

Software & Data Management

The embedded controller records temperature and humidity values at user-selectable intervals (1 s to 60 min), storing up to 10,000 data points internally. Export is supported via USB 2.0 to CSV or Excel-compatible formats. For enterprise integration, optional Ethernet-enabled remote monitoring allows secure HTTP/HTTPS access, SNMP trap alerts, and OPC UA server connectivity. All logged data includes timestamp, setpoint deviation, alarm status, and system diagnostics—satisfying documentation requirements under ISO 9001 Clause 8.5.2 and ICH Q5C stability protocol frameworks.

Applications

• Accelerated aging studies of polymer encapsulants, conformal coatings, and adhesive bonds under combined thermal-hygrometric stress
• Pre-conditioning of PCB assemblies prior to solderability or functional testing per IPC-J-STD-006
• Environmental screening of lithium-ion battery cells and BMS units per UL 1642 and UN 38.3 Section 4.4
• Validation of packaging integrity for sterile medical devices under ISO 11607-1 accelerated shelf-life protocols
• Thermal mapping and chamber qualification (IQ/OQ) using calibrated reference sensors per ASTM E2297

FAQ

What temperature and humidity ranges are standard across all OK-TH models?

Standard configuration covers −20 °C to +150 °C and 20–98 %RH; extended low-temperature options (−40 °C, −70 °C) and expanded humidity ranges (5–98 %RH) are available as factory-installed options.

Is the chamber suitable for use in ISO Class 5 cleanrooms?

Yes—the SUS#304 interior, zero-outgassing gaskets, and absence of painted surfaces or organic insulation materials comply with ISO 14644-1 particulate limits when operated with HEPA-filtered air supply.

Can the controller be configured for automated test profiles with ramp/soak segments?

Yes—up to 100 programmable steps with independent ramp rates, dwell times, and humidity setpoints; profiles can be duplicated, scheduled, and password-protected.

Does the unit include validation documentation for GxP environments?

Factory-supplied IQ/OQ templates and calibration reports (traceable to national metrology institutes) are provided; full 21 CFR Part 11 compliance requires optional software license and network authentication setup.

What maintenance intervals are recommended for optimal performance?

Compressor oil and refrigerant analysis every 24 months; condenser coil cleaning every 6 months; door gasket inspection and torque verification of hinge bolts quarterly.