OKE High-Low Temperature Environmental Test Chamber

Overview

The OKE High-Low Temperature Environmental Test Chamber is a precision-engineered climatic simulation system designed for rigorous thermal stress testing of electronic components, automotive parts, aerospace materials, and industrial assemblies. It operates on the principle of forced-air convection with dual-stage refrigeration and PID-controlled electric heating, enabling stable and reproducible temperature profiles across a wide operational range (typically –70 °C to +180 °C, configurable per model). The chamber’s thermally insulated double-wall construction—featuring high-density polyurethane foam and vacuum-sealed stainless-steel inner chamber—minimizes thermal leakage and ensures uniform temperature distribution (±0.5 °C at setpoint, per IEC 60068-3-5). Its architecture conforms to fundamental metrological traceability requirements defined in ISO/IEC 17025-accredited calibration practices and supports validation protocols required for GLP, GMP, and ISO 9001-compliant laboratories.

Key Features

• Smooth, arc-shaped exterior with matte-finish stainless steel cladding and ergonomic, non-spring flat-handle door mechanism for safe, low-effort access
• Hermetically sealed chamber design integrated with high-torque, low-noise centrifugal circulation motor and optimized air baffle geometry for ≤2 dB(A) acoustic emission during operation
• Integrated anti-vibration base pad compliant with ISO 10816-1 vibration severity thresholds, ensuring mechanical stability under dynamic thermal cycling
• Load-testing capability: built-in 4–6 terminal feedthroughs (IP65-rated) supporting powered device-under-test (DUT) operation during thermal exposure
• Observation window with Philips LED lighting (6500 K color temperature) and embedded resistive heating film to prevent condensation and maintain optical clarity at extreme humidity transitions
• Comprehensive safety architecture including over-temperature cut-off, compressor high-pressure shutdown, phase-loss protection, and door-open interlock circuitry

Sample Compatibility & Compliance

The chamber accommodates test specimens up to 600 mm × 600 mm × 600 mm (W×D×H), with optional internal shelves fabricated from perforated 304 stainless steel to maximize airflow penetration. It meets or exceeds core national and international environmental test standards, including GB/T 5170.2–2017 (Temperature Testing Equipment), GB/T 10592–2021 (Technical Specifications for High/Low-Temperature Chambers), IEC 60068-2-1 (Cold Tests), IEC 60068-2-2 (Dry Heat), MIL-STD-810G Method 501.6 & 502.6, and GJB 150.3A–2009 / GJB 150.4A–2009. All units undergo factory verification against ASTM E74 and ISO 17025 traceable reference sensors prior to shipment, and documentation includes as-built calibration certificates compliant with ISO/IEC 17025 Clause 6.5.

Software & Data Management

Equipped with an embedded 7-inch capacitive touchscreen HMI running real-time Linux OS, the system supports programmable multi-step thermal profiles (up to 99 segments, 999 cycles), ramp rate control (0.1–10 °C/min), and hold time definition. Data logging occurs at 1-second intervals to internal 16 GB flash storage, with export options via USB 2.0 or Ethernet (Modbus TCP/IP). Optional PC-based software (OKE TestSuite v4.2) provides FDA 21 CFR Part 11-compliant audit trail generation, electronic signature support, alarm history archiving, and automated report generation (PDF/CSV) aligned with ISO/IEC 17025 reporting requirements.

Applications

This test chamber serves critical roles in product qualification, reliability screening, and failure mode analysis across regulated industries. Typical use cases include: accelerated life testing of PCBAs per IPC-9701; thermal shock evaluation of battery modules (UN 38.3 Section 38.3.4); pre-conditioning of optical sensors prior to MIL-PRF-32270 acceptance; validation of medical device sterilization packaging integrity (ISO 11607); and environmental stress screening (ESS) of avionics hardware per DO-160 Section 4. It is routinely deployed in R&D labs, QA/QC departments, and third-party certification bodies accredited to ISO/IEC 17025.

FAQ

Does this chamber support humidity control?

No—this is a dry-thermal-only model. Humidity-capable variants (e.g., OKE TH-400 Series) are available upon request.

Can the chamber be validated for IQ/OQ/PQ protocols?

Yes—full validation documentation packages, including protocol templates and executed reports, are offered as an add-on service.

What is the standard warranty coverage?

Standard coverage is 24 months parts and labor, extendable to 36 months with annual preventive maintenance agreement.

Is remote monitoring supported?

Yes—via optional Ethernet gateway module with TLS 1.2-secured web interface and SNMPv3 alerting.

Are custom interior dimensions or feedthrough configurations possible?

Yes—OKE offers engineering consultation and mechanical customization under NDA, subject to minimum order quantity and lead time assessment.