High-Temperature Vacuum Oven OK-T-72 & OK-T-150 Series

Overview

The OK-T-72 and OK-T-150 High-Temperature Vacuum Ovens are precision-engineered environmental test chambers designed for accelerated thermal aging, moisture removal, stress relief, and material stabilization under controlled elevated temperatures. Unlike standard convection ovens, these units integrate vacuum capability (optional vacuum pump interface) and dual-zone heating architecture to ensure stable, uniform thermal profiles across the entire working volume—critical for reliability testing of electronic components, polymer curing validation, catalyst activation, and pre-conditioning of aerospace composites. The core measurement principle relies on precise regulation of resistive heating output via microprocessor-driven PID algorithms, with real-time feedback from calibrated PT100 platinum resistance sensors mounted at multiple strategic locations within the chamber cavity. Operating in accordance with GB/T 2423.2 (equivalent to IEC 60068-2-2), the system supports standardized high-temperature exposure protocols required by quality assurance departments in electronics manufacturing, automotive Tier-1 suppliers, and R&D laboratories conducting thermal endurance qualification.

Key Features

• Independent dual-heating system with two 2 kW far-infrared Ni-Cr alloy elements, enabling segmented thermal profiling and redundancy for extended operational uptime
• Microprocessor-based touchscreen controller featuring programmable ramp-soak profiles, data logging (via optional USB export), and password-protected parameter locking for GLP-compliant operation
• SUS#304 stainless steel interior chamber (electropolished finish available upon request) ensuring corrosion resistance against outgassing byproducts and repeated thermal cycling
• Forced-air circulation with bottom-mounted axial fan and optimized baffle design to minimize thermal stratification—validated temperature uniformity of ±1.5°C across full load capacity
• Integrated safety architecture: triple-layer thermal protection (PT100 sensor + mechanical over-temp cutout + thermal fuse), earth-leakage circuit interrupter (ELCI), and door-interlocked power cutoff
• Modular chassis design supporting optional vacuum port (KF-25 or ISO-KF40 flange), nitrogen purge inlet, and RS485 Modbus RTU interface for SCADA integration

Sample Compatibility & Compliance

The OK-T series accommodates a broad range of non-volatile, non-explosive solid and semi-solid specimens—including PCB assemblies, ceramic substrates, battery electrode coatings, silicone elastomers, and metal oxide powders. Per IEC 60079-0 and UL 508A guidelines, the chamber is explicitly rated for Class I, Division 2 environments when operated without volatile solvents or flammable vapors. All electrical components meet CE/EMC Directive 2014/30/EU and RoHS 2011/65/EU requirements. The control firmware supports audit trail generation (user login, setpoint changes, alarm events) compliant with FDA 21 CFR Part 11 when paired with validated software configuration. Routine calibration intervals align with ISO/IEC 17025 recommendations for accredited testing laboratories.

Software & Data Management

Standard operation requires no external PC; however, optional PC-based software (OK-Control Suite v3.2) enables remote monitoring, automated report generation (PDF/CSV), and compliance with ISO 17025 clause 7.7 (result reporting). Data points—including chamber temperature, setpoint deviation, elapsed time, and alarm status—are timestamped with millisecond resolution and stored internally for ≥30 days. Export functions support CSV for statistical process control (SPC) analysis in Minitab or JMP. Firmware updates are delivered via encrypted USB key to maintain integrity during field upgrades—fully traceable under GMP Annex 11 documentation requirements.

Applications

• Thermal aging of encapsulated semiconductors per JEDEC JESD22-A108
• Outgassing characterization of space-grade adhesives (per ECSS-Q-ST-70-02C)
• Pre-bake conditioning of optical lens assemblies prior to anti-reflective coating
• Residual solvent removal from lithium-ion battery cathode slurries
• Stress-relief annealing of machined aluminum 6061-T6 components
• Accelerated life testing of conformal coatings under IEC 60068-2-20

FAQ

Does this oven support true vacuum operation?
Yes—the chamber body includes a standard KF-25 vacuum port; a compatible two-stage rotary vane pump (e.g., Edwards RV8) is required separately to achieve ≤10⁻² mbar base pressure.
Can temperature uniformity be verified per ASTM E2203?
Absolutely—nine-point mapping per ASTM E2203 is supported using optional calibrated thermocouple probes and OK-MapLog software module.
Is the controller compliant with FDA 21 CFR Part 11?
The embedded controller meets electronic record/electronic signature (ER/ES) requirements when configured with user role management, audit trail enablement, and secure password policies.
What is the maximum continuous operating temperature for OK-T-150?
Rated for continuous operation at 300°C; custom configurations with upgraded insulation and Inconel heating elements support 500°C for short-duration qualification cycles only.
Are calibration certificates included with shipment?
A factory-as-received calibration certificate (traceable to NIM China) is provided; UKAS-accredited certificates are available as an add-on service.