OK-HH- High-Low Temperature Environmental Test Chamber

Overview

The OK-HH- High-Low Temperature Environmental Test Chamber is an engineered precision system designed for controlled thermal stress evaluation of materials and components under defined climatic conditions. It operates on a dual-refrigeration cascade system with forced-air convection circulation, enabling stable and reproducible temperature profiles across wide operational ranges—from deep cryogenic (-70°C) to elevated thermal exposure (+150°C). Integrated humidity control (20–98% RH, optionally extended to 5–98% RH) allows combined temperature-humidity testing in accordance with international environmental simulation standards. The chamber’s thermodynamic architecture—including high-efficiency compressors, PID-controlled heating/cooling loops, and insulated double-wall construction—ensures minimal thermal inertia and high spatial uniformity (±0.5°C, ±2.5% RH) within the working volume. This makes it suitable for qualification testing in R&D, quality assurance, and regulatory compliance workflows across electronics, aerospace, automotive, and industrial coating sectors.

Key Features

• Robust dual-stage refrigeration system supporting operation down to -70°C without liquid nitrogen assistance
• High-accuracy Pt100 temperature sensors and capacitive humidity transducers calibrated per ISO/IEC 17025 traceable protocols
• Digital touch-panel controller with real-time graphing, multi-step program capability (up to 99 cycles, 999 segments), and password-protected parameter locking
• Stainless steel SUS304 interior chamber and door gasket, corrosion-resistant exterior finish, and reinforced structural frame
• Standard 50 mm diameter test port with silicone plug, facilitating external signal routing or sensor integration during active testing
• Two-tier adjustable stainless steel shelving system with load capacity ≥15 kg per shelf
• Compliance-ready design: supports audit trails, user-level access control, and data export (CSV/Excel) for GLP/GMP-aligned documentation

Sample Compatibility & Compliance

The OK-HH- accommodates samples up to 60 × 85 × 80 cm (W×D×H) in its standard configuration, with optional larger variants (OK-TH-1000: 100 × 100 × 100 cm internal) available upon request. Its uniform airflow distribution and low-vibration blower assembly ensure consistent thermal exposure across heterogeneous sample geometries—including PCB assemblies, battery modules, polymer housings, and coated metal substrates. The chamber meets core requirements of IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-14 (thermal shock), and ASTM D4332 (conditioning of plastics). Optional humidity functionality aligns with IEC 60068-2-78 (damp heat, steady state) and MIL-STD-810G Method 507.5. All firmware and calibration records are maintained per ISO/IEC 17025 guidelines, and the controller supports 21 CFR Part 11-compliant electronic signatures when integrated with validated laboratory information management systems (LIMS).

Software & Data Management

The embedded controller features built-in data logging at user-selectable intervals (1 s to 60 min), storing up to 10,000 hours of timestamped temperature/humidity values internally. USB export enables direct transfer to Windows-based analysis tools. Optional PC software (OK-EnviroLink™) provides remote monitoring, alarm escalation via email/SMS, automated report generation (PDF/CSV), and comparative trend analysis across multiple test runs. Audit trail functionality logs all operator actions—including setpoint changes, program starts/stops, and calibration events—with immutable timestamps and user IDs. Data integrity safeguards include write-protection modes, cyclic redundancy checks (CRC), and encrypted backup archives compatible with network-attached storage (NAS) environments.

Applications

• Thermal cycling validation of automotive ECUs and powertrain sensors per AEC-Q200
• Pre-conditioning of lithium-ion cells prior to electrochemical performance testing
• Accelerated aging studies of conformal coatings and encapsulants used in avionics
• Environmental stress screening (ESS) of printed circuit board assemblies (PCBAs)
• Material compatibility testing for packaging films under tropical/humid storage conditions
• Stability assessment of pharmaceutical excipients and medical device polymers per ICH Q1A(R2)
• Qualification of industrial adhesives and sealants per ASTM D1002 and ISO 4587

FAQ

What is the standard warranty coverage for the OK-HH- chamber?
The unit carries a 24-month parts-and-labor warranty from date of shipment, covering defects in materials and workmanship under normal use and maintenance conditions.
Can the chamber be validated for GxP environments?
Yes—full IQ/OQ documentation packages are available upon request, including factory acceptance testing (FAT), sensor calibration certificates (NIST-traceable), and protocol templates compliant with FDA 21 CFR Part 11 and EU Annex 11.
Is remote monitoring supported out-of-the-box?
Basic Ethernet connectivity is standard; full remote supervision requires optional OK-EnviroLink™ license and IT infrastructure alignment (firewall configuration, static IP assignment).
What maintenance intervals are recommended?
Compressor oil inspection every 12 months; condenser coil cleaning quarterly; full system performance verification annually per ISO 17025-accredited service provider.
Are custom interior configurations available?
Yes—custom shelving layouts, additional test ports, non-standard insulation thicknesses, and explosion-proof variants (ATEX/IECEx) can be engineered upon technical review and formal quotation.