Vertical Temperature and Humidity Controlled Chamber – OK-TH Series

Overview

The OK-TH Series Vertical Temperature and Humidity Controlled Chambers are precision-engineered environmental test systems designed for rigorous reliability validation, accelerated aging studies, and long-term stability testing of electronic components, automotive modules, pharmaceutical packaging, and polymer-based materials. Operating on the principle of forced-air convection combined with dual-stage refrigeration and PID-controlled steam humidification, these chambers deliver stable, repeatable thermal and hygrothermal profiles across wide operational envelopes. The vertical architecture optimizes floor space utilization while enabling uniform airflow distribution—critical for minimizing stratification effects in larger test volumes. All models comply with fundamental requirements of MIL-STD-810G, IEC 60068-2 series, and China’s GB/T 2423 standards, making them suitable for pre-compliance screening in R&D labs and quality assurance environments governed by ISO/IEC 17025 or GMP-aligned protocols.

Key Features

• Configurable temperature range from −70 °C to +150 °C, with four standard variants (Models A–D) supporting application-specific cold-start, high-temperature bake, or ultra-low dew-point testing.
• Humidity control spanning 5–98 %RH (optional low-humidity configuration); achieved via stainless-steel steam generator and precision dry-air purge system for rapid dehumidification.
• High-fidelity climate stability: ±0.5 °C temperature uniformity and ±2.5 %RH humidity uniformity across full working volume, verified per IEC 60068-3-5.
• Dual-stage hermetic refrigeration using environmentally compliant R404A/R23 mixed-refrigerant circuitry—enabling consistent cooling performance even under high-load, high-humidity conditions.
• Intuitive 7-inch LCD touch controller with real-time graphing, programmable multi-step profiles (up to 99 segments), data logging (internal SD card + USB export), and audit-trail-enabled user authentication (supporting GLP/GMP traceability requirements).
• SUS#304 stainless steel construction throughout chamber body, door gasket, and internal shelving ensures corrosion resistance, cleanroom compatibility, and long-term dimensional stability under cyclic thermal stress.

Sample Compatibility & Compliance

The OK-TH chambers accommodate diverse sample geometries through customizable internal dimensions—from compact 80 L (OK-TH-80) to large-volume 1000 L (OK-TH-1000) configurations. Standard features include a φ50 mm unsealed cable port, two load-rated stainless-steel shelves, and caster-mounted base with locking leveling feet for vibration-sensitive installations. All units meet electromagnetic compatibility (EMC) Class B limits per EN 61326-1 and safety requirements per IEC 61010-1. Test method validation documentation—including uncertainty budgets for temperature/humidity sensors, calibration certificates traceable to NIST-equivalent national metrology institutes, and chamber mapping reports—is available upon request to support ISO 17025 accreditation or FDA 21 CFR Part 11-compliant workflows.

Software & Data Management

The embedded controller firmware supports seamless integration into enterprise lab networks via Ethernet (TCP/IP) or optional RS-485 Modbus RTU. Logged data—including setpoints, chamber readings, alarm history, and runtime statistics—is timestamped and stored with 0.1 s resolution. Export formats include CSV and Excel-compatible .xls files. For centralized fleet management, optional PC-based software enables remote monitoring, multi-chamber synchronization, automated report generation (PDF/HTML), and electronic signature functionality aligned with 21 CFR Part 11 Annex 11 expectations. Audit trails record all user actions (login/logout, parameter changes, profile uploads, manual overrides) with immutable timestamps and operator IDs.

Applications

• Environmental stress screening (ESS) of PCB assemblies and semiconductor packages per JEDEC JESD22-A104.
• Accelerated corrosion testing of coated metals and fasteners under cyclic salt-spray/humidity regimes.
• Stability testing of active pharmaceutical ingredients (APIs) and primary packaging per ICH Q1A(R2) guidelines.
• Validation of battery thermal runaway behavior at sub-zero temperatures and elevated humidity levels.
• Material coefficient-of-thermal-expansion (CTE) characterization via dimensional metrology under controlled hygrothermal loads.
• Qualification of aerospace avionics enclosures per DO-160 Section 4 (Temperature) and Section 5 (Humidity).

FAQ

Is this chamber suitable for continuous operation under GMP conditions?
Yes—the OK-TH series is engineered for 24/7 operation with redundant safety interlocks, self-diagnostics, and configurable alarm escalation (email/SMS via optional gateway). Full validation documentation packages (IQ/OQ/PQ templates) are provided.

Can the controller be configured for English-only operation?
Yes—the bilingual UI defaults to English and can be locked to English mode during setup to prevent accidental language switching in shared-lab environments.

What is the typical lead time for custom internal dimensions or special sensor ports?
Standard models ship within 4–6 weeks. Custom modifications (e.g., additional ports, extended temperature ranges, or non-standard shelf layouts) require 8–10 weeks and are subject to engineering review.

Does the unit include factory calibration certification?
Each chamber ships with a NIST-traceable calibration certificate covering temperature (−70 °C to +150 °C) and humidity (20–98 %RH) sensors, performed at three points across the operating range.

Are spare parts and service support available outside mainland China?
Global technical support is provided via regional partners in North America, EMEA, and APAC. Critical spares—including controllers, compressors, and humidifiers—are stocked in EU and US distribution hubs.