OK OK-STH-12.000m² Custom Walk-in Environmental Test Chamber

Overview

The OK OK-STH-12.000m² Custom Walk-in Environmental Test Chamber is an engineered thermal stability platform designed for large-scale, application-specific environmental simulation in industrial R&D, quality assurance, and regulatory validation settings. Unlike off-the-shelf chambers, this system is fully bespoke—configured from the ground up to meet exact spatial, thermal, operational, and compliance requirements. Its core architecture employs forced-air convection with dual-duct airflow distribution, high-efficiency refrigeration circuits (cascade or single-stage depending on low-temperature option), and precision PID-controlled heating/cooling modulation. The chamber operates on fundamental thermodynamic principles of heat transfer balance, where thermal load—including internal sample dissipation, door infiltration, and wall conduction—is quantitatively modeled during design to ensure stable, repeatable performance across the full specified temperature range. It is intended for long-duration static or dynamic environmental exposure testing per ISO 16750-4, IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), and MIL-STD-810H Method 502.7, supporting both product qualification and process validation workflows.

Key Features

• Modular insulated panel construction with polyurethane core (150 mm thickness standard; optional 200 mm for ultra-low-temp variants), sealed via continuous tongue-and-groove joints and stainless-steel corner reinforcements.
• Double-skin insulated door with electrothermal anti-fog glass viewing window (optional size/position), magnetic gasket sealing, and pneumatic or manual heavy-duty hinges rated for ≥100,000 cycles.
• Intelligent dual-zone air handling unit (AHU) with variable-frequency-driven centrifugal fans, independent supply/exhaust ducts, and adjustable diffuser nozzles to optimize vertical/horizontal airflow uniformity.
• Industrial-grade programmable logic controller (PLC)-based control system with 10.4″ color touchscreen HMI, real-time trend logging, alarm history with timestamped event codes, and configurable user access levels (operator, engineer, administrator).
• Comprehensive safety architecture: over-temperature cut-off (mechanical backup), refrigerant high-pressure/low-pressure switches, fan failure detection, phase loss monitoring, and optional SMS/email alert integration via Modbus TCP or Ethernet/IP.
• Standard provision for up to six 50-mm diameter test ports (EPDM-sealed, brass-threaded), internal GFCI-protected 220 VAC/16 A outlets, and adjustable stainless-steel shelving (load capacity: 80 kg per shelf, max 6 tiers).

Sample Compatibility & Compliance

The OK-STH-12.000m² accommodates heterogeneous thermal loads—from passive components to active electronic assemblies generating up to 15 kW total internal heat output (configurable cooling capacity up to 45 kW refrigeration). Sample compatibility extends to automotive ECUs, battery modules (Li-ion, LFP), aerospace avionics enclosures, and medical device sterilization trays. Structural clearances support personnel entry for manual loading/unloading or in-chamber operation (optional ergonomic lighting and CO₂ monitoring available). All configurations comply with CE marking requirements (2014/30/EU EMC Directive, 2014/35/EU Low Voltage Directive) and are designed to facilitate GLP/GMP audit readiness—data integrity features include password-protected parameter changes, electronic signature-capable operation logs, and optional 21 CFR Part 11-compliant software add-ons for regulated pharmaceutical or biotech applications.

Software & Data Management

The embedded OK-EnviroControl™ firmware supports multi-segment ramp-soak profiles (up to 99 segments), real-time deviation alarms with configurable thresholds, and automatic generation of CSV-formatted test reports compliant with ISO/IEC 17025 documentation standards. Local data storage retains ≥12 months of 1-second-interval sensor readings (temperature at 9 standardized locations + dew point if humidity option added). Remote monitoring is enabled via secure HTTPS web interface or OPC UA server integration, allowing third-party SCADA or MES systems to subscribe to live process variables. Optional cloud gateway module provides encrypted TLS 1.2 transmission to private AWS S3 buckets or customer-hosted time-series databases, with configurable retention policies and automated daily backups.

Applications

This chamber serves critical functions across multiple sectors: accelerated life testing of EV battery packs under −40°C to +85°C thermal cycling; thermal soak validation of military-grade radar housings prior to vibration testing; shelf-life studies of temperature-sensitive biologics in controlled cold-chain environments; pre-conditioning of composite aerospace structures before non-destructive evaluation; and calibration lab support for reference instrument stabilization. Its walk-in format enables simultaneous conditioning of multiple SKUs, full-system functional testing with peripheral instrumentation, and human-factor ergonomics assessment under extreme ambient conditions—capabilities not feasible in benchtop units.

FAQ

What documentation is provided for validation and qualification?

Factory Acceptance Test (FAT) report, Installation Qualification (IQ) protocol, Operational Qualification (OQ) protocol with pre-executed test points, and calibration certificates for all Class A PT100 sensors traceable to NIM (China National Institute of Metrology).

Can the chamber be integrated into an existing building management system (BMS)?

Yes—standard BACnet MS/TP or Modbus RTU interfaces are included; BACnet IP and MQTT adapters available as optional field upgrades.

Is humidity control available as an add-on?

Yes—integrated steam humidification and dehumidification (refrigerant-based or desiccant) can be specified, extending capability to IEC 60068-2-78 (damp heat, cyclic) and MIL-STD-810H Method 507.6.

What is the typical lead time for a custom configuration?

14–18 weeks from signed technical agreement and down payment, inclusive of thermal load calculation review, 3D layout approval, FAT, and on-site commissioning support.

Does OK Instruments provide on-site training and after-sales service?

Yes—two-day operator and maintenance training is included; extended warranty packages and annual preventive maintenance contracts with certified field engineers are available.