OK-TH-225 Environmental Temperature Chamber – Service & Maintenance Package

Overview

The OK-TH-225 Environmental Temperature Chamber is a precision-engineered thermal test system designed for reliability validation, accelerated aging, and environmental stress screening of electronic components, automotive modules, aerospace subsystems, and industrial materials. Operating on a forced-air convection principle with dual-stage refrigeration and PID-controlled electric heating, the chamber delivers stable temperature profiles across a wide operating range—typically −70 °C to +180 °C (configurable per OEM specification). Its fully enclosed cabinet architecture minimizes thermal leakage and acoustic emissions, while integrated vibration-damping feet ensure mechanical stability during extended operational cycles. This unit is not sold as new equipment in this context; rather, the offering pertains exclusively to comprehensive post-warranty service, calibration, component-level repair, and performance requalification—aligned with international environmental testing standards.

Key Features

• Seamless curved exterior with matte-finish stainless steel cladding and ergonomic flat-profile handles for safe, tool-free access
• Hermetically sealed chamber housing with high-efficiency axial circulation motor and low-noise scroll-type refrigeration compressor
• Integrated anti-vibration mounting pads compliant with ISO 10816-3 vibration severity thresholds for laboratory-grade stability
• Load-testing capability: provision for external power feed-through terminals (rated up to 250 VAC / 10 A) enabling real-time functional evaluation of DUTs under thermal stress
• Philips-certified observation window with embedded resistive heating film (12 V DC, 25 W) to prevent condensation and maintain optical clarity at extreme dew-point differentials
• Multi-layer safety architecture including over-temperature cut-off (dual independent sensors), refrigerant pressure monitoring, door interlock switch, and ground-fault circuit interrupter (GFCI)

Sample Compatibility & Compliance

The OK-TH-225 accommodates standard test specimens up to 500 mm × 500 mm × 500 mm (W×D×H) with uniformity tolerance ≤ ±1.5 °C across the working volume (per IEC 60068-3-5). It supports both static and powered-in testing configurations for PCBAs, sensors, battery packs, and encapsulated optoelectronic assemblies. The chamber’s metrological performance conforms to the following regulatory and technical frameworks: GB/T 5170.2–2017 (Temperature Test Equipment Verification), GB/T 10589–2008 (Low-Temperature Test Chambers), GB/T 10586–2006 (Humidity Test Chambers), MIL-STD-810G Method 501.6 (High Temperature), Method 502.6 (Low Temperature), and IEC 60068-2-1 (Cold) / IEC 60068-2-2 (Dry Heat). All maintenance interventions include traceable recalibration against NIST-traceable reference standards.

Software & Data Management

While the OK-TH-225 operates via its native programmable logic controller (PLC) interface, service packages include firmware diagnostics, parameter backup/restore, and optional integration with third-party data acquisition systems (e.g., LabVIEW, MATLAB, or custom SCADA platforms) via RS-485 Modbus RTU or Ethernet/IP protocols. Post-repair verification reports include full audit trails: sensor response curves, ramp rate validation (°C/min), steady-state deviation logs, and alarm event timestamps—all structured to support GLP/GMP documentation requirements and FDA 21 CFR Part 11-compliant electronic records when paired with validated software environments.

Applications

• Thermal cycling qualification of semiconductor packaging per JEDEC JESD22-A104
• Pre-conditioning of lithium-ion cells prior to safety testing (UN 38.3, IEC 62133)
• Validation of conformal coating integrity under thermal shock (MIL-I-46058C)
• Environmental stress screening (ESS) of avionics LRUs in accordance with DO-160 Section 4
• Material coefficient of thermal expansion (CTE) assessment using thermomechanical analysis (TMA)-compatible fixtures
• Long-term reliability studies including HTOL (High-Temperature Operating Life) per JESD74A

FAQ

Is the quoted service price inclusive of spare parts replacement?
No—the USD 2,800 base fee covers labor, diagnostic time, system-level calibration, and functional verification. Parts replacement (e.g., compressors, PID controllers, PT100 sensors) is billed separately based on OEM part numbers and current distributor pricing.
Do you provide on-site repair services outside mainland China?
Yes—global on-site support is available upon request; travel, accommodation, and local import duties for tools/spare parts are additional and itemized in the formal service order.
Can the chamber be upgraded to meet newer IEC 60068-3-10:2020 thermal shock requirements?
Feasibility depends on hardware revision level; a pre-service engineering review is required to assess controller firmware compatibility, actuator responsiveness, and chamber wall insulation integrity.
How long is the service warranty after repair completion?
All repairs carry a 90-day limited warranty covering defects in workmanship and verified component functionality under normal operating conditions.
Is ISO/IEC 17025-accredited calibration included?
Standard service includes factory-level calibration with uncertainty statements. Full ISO/IEC 17025 accreditation requires coordination with an ILAC-MRA signatory lab and incurs additional lead time and cost.