Other Brands OK-TH Series Temperature and Humidity Controlled Environmental Test Chamber
| Brand | Other Brands |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Price | USD 2,650 (FOB) |
| Temperature Range | -70 °C to +150 °C (configurable models) |
| Humidity Range | 20–98 %RH (optional 5–98 %RH) |
| Temperature Uniformity | ±0.5 °C |
| Humidity Uniformity | ±2.5 %RH |
| Temperature Fluctuation | ±2 °C |
| Humidity Fluctuation | +2–3 %RH |
| Resolution | 0.1 °C / 0.1 %RH |
| Ramp Rate | Heating ~4.0 °C/min |
| Internal Dimensions (W×H×D, cm) | 40×50×40 to 100×100×100 |
| External Dimensions (W×H×D, cm) | 100×165×100 to 180×200×180 |
| Viewing Window | Multi-layer laminated tempered glass with conductive ITO film |
| Port | One Ø50 mm test port (left side) |
| Construction | Interior & exterior SUS#304 stainless steel |
| Refrigeration | Hermetic low-noise dual-stage compressor system with R404A/R23 eco-friendly refrigerants |
| Power Supply | AC 380 V ±5 %, 50 Hz ±0.5 Hz, 3-phase 5-wire |
Overview
The OK-TH Series Temperature and Humidity Controlled Environmental Test Chamber is an engineered solution for precise, repeatable simulation of climatic stress conditions in laboratory and industrial quality assurance environments. Designed according to the fundamental principles of thermodynamic equilibrium and psychrometric control, this chamber employs a dual-stage refrigeration circuit combined with PID-controlled steam humidification and electric heating to maintain stable setpoints across wide operational ranges. Its architecture supports both steady-state (constant temperature/humidity) and dynamic (ramp-and-soak, cycling) test profiles—critical for validating product reliability under real-world environmental exposure. The chamber meets the physical and procedural requirements of multiple international standards including MIL-STD-810G (Method 501.6, 502.6), IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), IEC 60068-2-78 (Steady-State Damp Heat), and IEC 60068-2-30 (Cyclic Damp Heat), as well as corresponding national equivalents such as GB/T 2423.1–2001, GB/T 2423.2–2001, and GB/T 2423.4–1993.
Key Features
- Microprocessor-based touch-screen controller with intuitive GUI, supporting seamless switching between English and Chinese language interfaces for global lab personnel;
- Double-sealed door assembly using high-tensile, heat-resistant silicone gaskets ensures long-term integrity and minimizes thermal leakage;
- Multi-layer insulated observation window fabricated from laminated tempered glass with integrated indium tin oxide (ITO) conductive film—enabling clear visual monitoring without condensation or electrostatic interference;
- Full internal and external construction from SUS#304 stainless steel—resistant to corrosion, non-outgassing, and compliant with cleanroom-compatible material specifications;
- Dual-stage hermetic refrigeration system utilizing environmentally certified refrigerants (R404A for primary stage, R23 for sub-zero operation), optimized for low acoustic emission (<65 dB(A)) and extended compressor service life;
- Integrated safety architecture including over-temperature, over-humidity, compressor high-pressure, phase-failure, and door-open interlocks—all triggering immediate power cutoff and on-screen fault diagnostics;
- Standard Ø50 mm cable/port access on left sidewall, pre-installed with stainless steel gland fitting for secure feedthrough of power or signal lines under test conditions.
Sample Compatibility & Compliance
The OK-TH chamber accommodates diverse sample geometries—from compact electronic modules to large automotive components—via customizable interior dimensions (40 L to 1000 L working volume). Removable SUS#304 shelves (two standard tiers), adjustable leveling feet, and optional casters support flexible loading and ergonomic operation. All models are supplied with full traceable calibration documentation aligned to ISO/IEC 17025-accredited practices. The system architecture inherently supports GLP and GMP workflows: audit trails, user-level access control, and parameter-lock functions are available via optional firmware upgrades compliant with FDA 21 CFR Part 11 requirements. Validation packages—including IQ/OQ protocols and uncertainty budgets per ISO/IEC 17025 Annex A.4—are available upon request for regulated industries (medical devices, aerospace, automotive electronics).
Software & Data Management
Equipped with embedded Ethernet and RS-485 interfaces, the chamber integrates natively into centralized laboratory information management systems (LIMS) and SCADA platforms. Real-time data logging (at user-defined intervals down to 1 second) is stored internally (≥30 days at 1-min intervals) and exportable via USB or network transfer in CSV format. Optional PC-based software provides remote monitoring, multi-chamber synchronization, automated report generation (PDF/Excel), and statistical process control (SPC) charting—including Cp/Cpk calculation against user-defined tolerance bands. All logged parameters (chamber setpoint, actual temperature/humidity, ramp rate, alarm history) are time-stamped with NTP-synchronized UTC clocks and retain immutable timestamps even during power interruption.
Applications
- Accelerated aging studies for polymer encapsulants, conformal coatings, and adhesive bonds;
- Environmental stress screening (ESS) of PCB assemblies prior to HALT/HASS;
- Qualification testing of battery packs under combined thermal and humidity load;
- Validation of packaging integrity for sterile medical devices per ISO 11607;
- Material compatibility assessment of seals, gaskets, and elastomers exposed to cyclic humidity;
- Pre-conditioning of sensors and optical components before metrological calibration;
- Compliance verification for automotive ECUs per ISO 16750-4 and AEC-Q200 stress test schedules.
FAQ
What temperature and humidity ranges are standard across the OK-TH series?
Standard configurations offer -20 °C to +150 °C and 20–98 %RH. Extended low-temperature variants (-40 °C and -70 °C) and ultra-low humidity options (5–98 %RH) are available as factory-configured options.
Is the chamber suitable for continuous 24/7 operation in production QA labs?
Yes. The dual-stage refrigeration system, redundant safety circuits, and industrial-grade controller firmware are rated for uninterrupted operation under Class II environmental conditions per IEC 60721-3-2.
Can the chamber be validated for ISO/IEC 17025-compliant calibration?
All units ship with as-delivered calibration certificates (NIST-traceable reference sensors). Full validation support—including uncertainty analysis, mapping reports, and IQ/OQ documentation—is provided by authorized service partners.
What electrical infrastructure is required for installation?
A dedicated 3-phase 5-wire AC 380 V ±5 %, 50 Hz ±0.5 Hz supply with minimum 32 A circuit protection is required. Voltage stability and grounding resistance (<4 Ω) must comply with IEC 61000-4-30 Class A requirements.
Are custom internal configurations (e.g., additional ports, specialized shelving) supported?
Yes. Mechanical and electrical modifications—including multi-port arrays, reinforced floor plates, and inert gas purge interfaces—are available through engineering consultation and formal change control documentation.
