Oko Environmental Test Chamber – Low-Temperature Constant Temperature & Humidity Chamber
| Brand | Oko Instruments |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Price | USD 3,100 (Reference Only |
Overview
The Oko Environmental Test Chamber is an engineered precision system designed for controlled low-temperature, constant temperature, and humidity conditioning of materials and electronic components under standardized environmental stress conditions. It operates on the principle of dual-refrigeration circuit modulation combined with PID-controlled steam humidification and forced-air convection, enabling stable thermal-hygrometric profiles across a defined operational envelope. This chamber is purpose-built for laboratory-based reliability validation, accelerated aging studies, and pre-compliance screening in accordance with international environmental testing standards—including IEC 60068-2 series, MIL-STD-810G, and ISO 16750-4—making it suitable for R&D labs, QC departments, and third-party certification facilities engaged in electronics, automotive, aerospace, and medical device qualification protocols.
Key Features
- Robust all-steel welded enclosure with matte-finish arc-shaped corners and anti-reflective surface treatment for enhanced durability and aesthetic integration into modern lab environments.
- Front-access planar handle design with zero-backlash mechanical linkage—ensuring smooth, vibration-free door operation and long-term sealing integrity.
- Hermetically sealed chamber architecture incorporating high-efficiency axial-flow circulation motors and low-noise scroll compressors, achieving acoustic performance ≤62 dB(A) at 1 m distance during continuous operation.
- Integrated anti-vibration mounting pads compliant with ISO 10816-1 Class A criteria, minimizing transmission of mechanical resonance to sensitive test specimens or adjacent instrumentation.
- Electrical feedthrough capability (up to 30 A @ 250 VAC) supporting powered-in-situ testing of active devices—enabling real-time functional monitoring during thermal-humidity cycling without interruption.
- Philips LED observation window lighting coupled with embedded resistive anti-fog heater elements, maintaining optical clarity across the full operating RH range (10–98% RH) and temperature span (–40°C to +150°C).
- Multi-layer safety architecture including over-temperature cutoff, compressor high-pressure lockout, humidity sensor failure detection, and door-open interlock—certified per IEC 61000-6-2/6-4 for EMC immunity and emissions compliance.
Sample Compatibility & Compliance
The chamber accommodates standard test specimens up to 500 mm × 500 mm × 500 mm (W×D×H), with optional internal shelf configurations supporting stacked or suspended mounting. Its control stability meets ±0.5°C temperature uniformity (per GB/T 5170.2–2017 Clause 5.3) and ±3% RH uniformity (per GB/T 5170.5–2017) at steady state. Validation documentation supports traceable calibration against NIST-traceable reference sensors. The system conforms to national and international regulatory frameworks including GB/T 2423.1–2022 (cold testing), GB/T 2423.2–2022 (dry heat), GJB 150.3A–2009 (high-temperature), GJB 150.4A–2009 (low-temperature), and ISO 16750-4:2015 (road vehicles—environmental conditions). Optional IQ/OQ documentation packages are available for GLP/GMP-aligned installations.
Software & Data Management
Equipped with Oko’s proprietary ETS-Link™ controller firmware (v4.2+), the chamber provides real-time data logging at 1-second intervals, configurable alarm thresholds, and event-triggered data capture. USB and RS485 interfaces enable direct integration with LIMS or MES platforms. Audit trail functionality complies with FDA 21 CFR Part 11 requirements when paired with validated user authentication and electronic signature modules. Export formats include CSV, PDF test reports, and XML metadata files compatible with LabWare and STARLIMS systems.
Applications
- Accelerated life testing of PCB assemblies under combined thermal-humidity stress (e.g., IPC-J-STD-020D moisture sensitivity level assessment).
- Material compatibility evaluation for polymer seals, adhesives, and encapsulants exposed to sub-zero storage conditions.
- Pre-screening of battery cells (Li-ion, solid-state) for cold-start performance degradation and electrolyte phase separation behavior.
- Validation of packaging integrity for sterile medical devices subjected to warehouse transit simulations (ASTM D4332, ISTA 3A).
- Environmental stress screening (ESS) of avionics modules per DO-160 Section 4 and RTCA/DO-160G Amendment 4.
FAQ
What is the standard temperature and humidity range for this chamber?
The base configuration operates from –40°C to +150°C at 10–98% RH. Extended low-temperature options down to –70°C are available upon request with upgraded refrigerant circuitry.
Does the chamber support programmable ramp-and-soak profiles?
Yes—up to 99 segments per profile, with ramp rates adjustable from 0.1°C/min to 10°C/min and dwell times configurable from 1 minute to 999 hours.
Is remote monitoring possible via Ethernet or cloud interface?
Standard Ethernet (TCP/IP) connectivity is included; optional MQTT/OPC UA gateway modules enable secure integration into Industry 4.0 infrastructure.
Can calibration certificates be provided with NIST traceability?
Yes—factory calibration includes dual-point verification (–20°C/+60°C, 30%/70% RH) with full uncertainty budgeting per ISO/IEC 17025:2017 guidelines.
What maintenance intervals are recommended for long-term reliability?
Compressor oil analysis and refrigerant leak check every 12 months; humidity sensor recalibration every 6 months; full preventive maintenance service per ISO 13374-1 Level II protocol annually.
