OKE High-Low Temperature Environmental Test Chamber
| Brand | OKE Instruments |
|---|---|
| Origin | Imported (Manufactured in ISO 9001–certified facility, final assembly and calibration in China) |
| Supplier Type | Authorized Distributor |
| Compliance Standards | GB/T 5170.2–1996, GB/T 10592–2008, GB/T 2423.2–2008 (IEC 60068-2-2), GJB 150.3A–2009, GJB 150.4A–2009, GJB 360B–2009 |
| Price Range | USD 2,800–3,200 (FOB Shanghai |
Overview
The OKE High-Low Temperature Environmental Test Chamber is a precision-engineered climatic simulation system designed for laboratory-grade thermal stress evaluation of electronic components, automotive parts, aerospace materials, and industrial packaging. Based on forced-air convection with dual-stage refrigeration and PID-controlled electric heating, the chamber delivers stable, uniform, and repeatable temperature profiles across programmable ranges—from –70 °C to +150 °C (standard configuration; extended ranges available upon request). Its architecture adheres to fundamental thermodynamic principles of heat transfer and thermal equilibrium, ensuring minimal spatial deviation (<±0.5 °C at 100 mm from reference sensor) and temporal stability (±0.3 °C over 2-hour dwell). The unit operates under closed-loop feedback control using Class A platinum resistance thermometers (Pt100) traceable to NIST standards, enabling compliance with GLP and pre-audit readiness for ISO/IEC 17025-accredited laboratories.
Key Features
- Seamless stainless-steel interior with radius-corner construction for uniform airflow distribution and ease of cleaning
- High-efficiency hermetic compressor system with eco-friendly R404A/R23 cascade refrigeration for rapid cooling ramp rates (≥1.5 °C/min from 25 °C to –40 °C)
- Intelligent microprocessor controller with 128×64 LCD display, real-time graphing, and up to 99 programmable segments per test cycle
- Integrated load-power terminals (max. 250 VAC / 10 A) enabling powered-in situ testing—critical for functional validation of PCBs, sensors, and embedded controllers
- Double-layer insulated observation window with Philips LED illumination and built-in anti-fog heater (operational up to 120 °C ambient internal temperature)
- Multi-level safety architecture: independent over-temperature cut-off, compressor high-pressure switch, door interlock, phase failure protection, and ground fault detection
- Low-noise operation (<62 dB(A) at 1 m) achieved via vibration-dampened mounting, acoustic insulation, and ultra-quiet axial fans
Sample Compatibility & Compliance
The chamber accommodates standard test specimens up to 500 mm × 500 mm × 500 mm (W×D×H); custom interior dimensions and shelf configurations are available. It supports both static and dynamic thermal cycling protocols—including step-stress, ramp-hold, and profile-based sequences—as required by MIL-STD-810G Method 502.6 (Temperature Variation) and IEC 60068-2-14 (Change of Temperature). All units undergo factory verification per GB/T 5170.2–1996 (Verification Procedures for Temperature Testing Equipment) and include a full calibration certificate with uncertainty budget (k=2). Optional traceable calibration services meet ISO/IEC 17025 requirements and support FDA 21 CFR Part 11 audit trails when paired with validated software.
Software & Data Management
OKE’s optional PC-based monitoring suite (OKE-TempView v3.2) provides remote supervision, data logging at 1-second intervals, alarm event timestamping, and export to CSV/PDF formats. The software supports user-defined pass/fail criteria, automated report generation (including test duration, min/max/mean temperatures, and deviation plots), and role-based access control. When configured with Ethernet or RS-485 interfaces, the system enables integration into centralized lab management platforms (LIMS) and satisfies data integrity requirements under GxP environments through electronic signatures, audit trail logging, and password-protected configuration changes.
Applications
This environmental test chamber is routinely deployed in quality assurance labs for accelerated life testing (ALT), qualification of solder joint reliability (per IPC-J-STD-020), validation of battery thermal runaway behavior, screening of conformal coatings, and verification of thermal expansion coefficients in composite substrates. It serves as a primary tool in R&D workflows for automotive ECUs (AEC-Q200), medical device sterilization packaging (ISO 11607), and defense electronics subjected to MIL-HDBK-217F reliability modeling.
FAQ
What temperature uniformity and stability specifications does this chamber meet?
Per GB/T 5170.2–1996, uniformity is ≤±0.5 °C and stability is ≤±0.3 °C under steady-state conditions at any setpoint between –40 °C and +85 °C.
Can the chamber operate continuously at extreme temperatures such as –70 °C?
Yes—when equipped with optional ultra-low-temperature cascade refrigeration, continuous operation at –70 °C is supported with proper ventilation and ambient room temperature maintained below 30 °C.
Is the controller compliant with FDA 21 CFR Part 11 for electronic records?
The base controller is not Part 11–compliant; however, OKE-TempView v3.2 with enabled audit trail, electronic signature, and secure user authentication meets all core requirements for regulated environments.
Does the unit include a calibration certificate upon shipment?
Yes—a factory calibration certificate with measurement uncertainty (k=2) and traceability to national standards is provided with each unit.
What is the warranty coverage and service support structure?
OKE offers a 24-month limited warranty covering parts and labor, plus lifetime technical support via email and remote diagnostics; on-site service is available in major Asian and European metropolitan areas through certified partners.
