English Product Name
| Brand | OK Instrumentation (OEM/ODM Manufacturer) |
|---|---|
| Origin | China (Designed for Global Compliance) |
| Manufacturer Type | ISO 9001-Certified OEM Manufacturer |
| Category | Benchtop & Walk-in Environmental Test Chamber |
| 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 |
| Temperature Range | -70 °C to +150 °C (Configurable: A: 0–150 °C |
| B | -20–150 °C |
| C | -40–150 °C |
| D | -70–150 °C) |
| Humidity Range | 20–98 %RH (Optional: 5–98 %RH or 10–98 %RH) |
| Temperature Ramp Rate | Up to 4.0 °C/min (Heating), ~1.0 °C/min (Cooling) |
| Uniformity | ±0.5 °C / ±2.5 %RH |
| Stability (Fluctuation) | ±2.0 °C / +2–3 %RH |
| Resolution | 0.1 °C / 0.1 %RH |
| Refrigeration System | Hermetically Sealed Dual-Stage Compressor with Eco-Friendly Refrigerants (R404A/R23) |
| Controller | Touchscreen LCD with Multi-Language Interface (English/Chinese) |
| Construction | SUS#304 Stainless Steel Interior & Exterior |
| Standard Accessories | One Ø50 mm Cable Port, Two Adjustable SUS#304 Shelves, Four Casters + Four Leveling Feet |
| Power Supply | AC 380 V ±5 %, 50 Hz ±0.5 Hz, 3-Phase 5-Wire, 2.5 m Cord |
| Standards Compliance | MIL-STD-810G (GJB150.3/4), IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), IEC 60068-2-78 (Steady-State Humidity), IEC 60068-2-30 (Cyclic Humidity), GB/T 2423.1–2001, GB/T 2423.2–2001, GB/T 2423.4–1993 |
Overview
The OK-TH Series Temperature and Humidity Controlled Environmental Test Chamber is an engineered solution for precise, repeatable simulation of climatic conditions in laboratory and industrial quality assurance environments. Based on the principle of forced-air convection combined with dual-stage refrigeration and PID-controlled steam humidification, this chamber delivers stable thermal-hygrometric profiles across a wide operational envelope—from deep-freeze (-70 °C) to high-temperature bake (+150 °C) and from low-humidity desiccation (5 %RH) to saturated condensation (98 %RH). Its architecture adheres to fundamental thermodynamic design criteria for environmental testing: uniform airflow distribution via centrifugal fans, insulated double-wall construction with polyurethane foam (≥100 mm thickness), and calibrated sensor placement per IEC 60068-3-5 requirements. The chamber is not a generic “climate cabinet” but a purpose-built test system validated for use in accelerated aging, reliability screening, and qualification testing under MIL-STD-810, IEC, and GB/T standards.
Key Features
- Modular chamber sizing: Six standard internal volumes (80 L to 1000 L), all scalable for custom dimensions per client sample footprint and throughput requirements.
- Dual-stage refrigeration system using R404A (high-temp stage) and R23 (low-temp stage), enabling rapid cooldown to -70 °C without cryogenic consumables.
- PID-driven steam humidification with stainless-steel boiler and deionized water feed—ensuring traceable humidity control without mineral deposits or nozzle clogging.
- Touchscreen controller with real-time trend logging, programmable ramp-soak cycles, alarm history, and user-level access control (Operator/Engineer/Admin).
- SUS#304 stainless steel interior and exterior surfaces—electropolished where specified—meeting cleanroom-compatible corrosion resistance per ASTM A967.
- Integrated validation-ready features: Sensor calibration ports, NIST-traceable RTD and capacitive RH sensor inputs, and optional 21 CFR Part 11-compliant audit trail module.
Sample Compatibility & Compliance
The OK-TH chamber accommodates diverse sample geometries—from PCB assemblies and automotive ECUs to pharmaceutical packaging and polymer specimens—via configurable shelf spacing and optional internal lighting or data acquisition ports. All models are pre-qualified against key international test standards: MIL-STD-810G Method 502.5 (Temperature), Method 501.5 (High Temperature), and Method 507.5 (Humidity); IEC 60068-2-78 (Steady-State Humid Heat); and GB/T 2423.4 (Cyclic Damp Heat). Structural integrity and thermal performance are verified per ISO 17025-accredited third-party reports. Optional IQ/OQ documentation packages support GLP and GMP-regulated laboratories requiring full traceability from installation to routine operation.
Software & Data Management
The embedded controller supports local data storage (≥10,000 hours of 1-second interval logging) and USB export in CSV format. For enterprise integration, optional Ethernet/Wi-Fi connectivity enables remote monitoring via OK-CloudLink™ platform—compatible with LabVIEW, MATLAB, and SCADA systems. Full data integrity compliance is available through an add-on software module supporting electronic signatures, change control logs, and FDA 21 CFR Part 11 audit trails—including user action timestamps, parameter modification records, and report generation history.
Applications
- Electronics reliability: Thermal cycling of semiconductors, solder joint fatigue analysis, and moisture sensitivity level (MSL) testing per J-STD-020.
- Automotive component validation: Climate endurance of infotainment modules, battery management systems, and ADAS sensors under combined temperature/humidity stress.
- Pharmaceutical stability: ICH Q1A(R3)-aligned long-term and accelerated stability studies (e.g., 40 °C/75 %RH for 6 months).
- Materials science: Hygrothermal aging of composites, adhesives, and coatings per ASTM D1761 and ISO 4892-2.
- Quality assurance labs: In-house verification of supplier environmental test reports prior to incoming inspection.
FAQ
Is the OK-TH chamber certified for use in regulated industries such as pharmaceuticals or aerospace?
Yes—when equipped with the optional Validation Support Package (VSP), the chamber meets IQ/OQ protocol requirements and supports 21 CFR Part 11 and Annex 11 compliance through documented sensor calibration, alarm response verification, and electronic audit trail functionality.
Can the chamber be integrated into an existing facility monitoring system?
All models include Modbus TCP and RS-485 interfaces; optional OPC UA and MQTT gateways enable seamless integration with DeltaV, Siemens Desigo, or custom MES platforms.
What is the typical lead time for custom configurations?
Standard models ship within 4–6 weeks; custom internal dimensions, extended temperature/humidity ranges, or special material finishes require 10–14 weeks from PO confirmation and final drawing sign-off.
Are calibration certificates included with shipment?
A factory calibration certificate (traceable to NIM, China) is provided with each unit; optional UKAS or DAkkS-accredited certificates are available upon request.
Does the chamber support automated test sequencing across multiple environmental profiles?
Yes—the controller supports up to 99 programmable steps per profile, including conditional branching (e.g., “if RH > 90%, hold for 2 h; else proceed”), multi-segment ramps, and external trigger inputs for synchronized stimulus application.
