OK-TH Series Compact Temperature and Humidity Controlled Environmental Test Chamber

Overview

The OK-TH Series Compact Temperature and Humidity Controlled Environmental Test Chamber is an engineered solution for precise, repeatable simulation of climatic stress conditions in R&D laboratories, quality assurance departments, and electronics manufacturing facilities. Based on forced-air convection and dual-stage refrigeration architecture, the chamber maintains stable thermal and hygrometric profiles across its working volume using a combination of PID-controlled heating elements, high-efficiency evaporator coils, and steam-based humidification with dehumidification via refrigerant cooling. Designed for compliance-driven environments, it supports validation protocols required by ISO/IEC 17025-accredited testing labs and fulfills essential environmental stress screening (ESS) criteria for component-level qualification per MIL-STD-810 and IEC 60068 standards.

Key Features

• Modular internal dimensions (from 80 L to 1000 L) with customizable chamber geometry to accommodate prototype assemblies, PCBs, medical devices, or polymer samples
• Configurable temperature range spanning -70 °C to +150 °C and humidity control from 20–98 %RH (with optional extended ranges down to 5 %RH)
• SUS#304 stainless steel interior and exterior construction ensures corrosion resistance, cleanroom compatibility, and long-term dimensional stability
• Intelligent touchscreen controller with real-time graphing, programmable ramp-soak cycles, data logging (≥10,000 points), and USB export capability
• Integrated mechanical safety systems including over-temperature cutoff, refrigerant pressure monitoring, door interlock, and dry-run protection for humidifier
• Standard accessories include two adjustable stainless steel shelves, one 50 mm diameter cable port, four casters with leveling feet, and 2.5 m power cord with industrial-grade 3P+PE connector

Sample Compatibility & Compliance

The OK-TH chamber accommodates diverse sample types—including lithium-ion battery cells, optical sensors, pharmaceutical packaging, elastomeric seals, and automotive ECUs—without compromising thermal homogeneity or humidity fidelity. Internal airflow design minimizes stratification, achieving ±0.5 °C temperature uniformity and ±2.5 %RH humidity uniformity at setpoint (per IEC 60068-3-5). All models are factory-calibrated traceable to NIST-certified reference instruments and support IQ/OQ documentation packages. The system meets electromagnetic compatibility (EMC) requirements per EN 61326-1 and is suitable for use in GLP-compliant laboratories conducting stability studies under ICH Q1 guidelines. Optional audit trail and user access control modules enable alignment with FDA 21 CFR Part 11 for electronic records and signatures.

Software & Data Management

The embedded controller firmware supports up to 100 multi-step test programs with conditional branching (e.g., trigger humidity change upon reaching target temperature). Logged data includes timestamped temperature, relative humidity, setpoint deviation, compressor status, and alarm history—all stored in CSV format for post-processing in MATLAB, Python, or LIMS platforms. Remote monitoring is enabled via Ethernet (TCP/IP) or RS485 Modbus RTU protocol, allowing integration into centralized facility management systems. Optional PC-based software provides advanced visualization tools, statistical process control (SPC) charts, and automated report generation compliant with ISO/IEC 17025 clause 7.8.2.

Applications

• Accelerated aging tests for polymer degradation and adhesive bond integrity
• Temperature-humidity bias testing of semiconductor devices and MEMS sensors
• Stability chamber qualification for pharmaceutical packaging per USP
• Environmental stress screening (ESS) of avionics subassemblies prior to HALT/HASS
• Validation of moisture barrier performance in flexible electronics encapsulation
• Material coefficient of thermal expansion (CTE) characterization under controlled RH

FAQ

What is the standard calibration certificate included with delivery?

Each unit ships with a factory calibration report covering temperature and humidity performance at three points (low/mid/high) across the operating range, traceable to national metrology institutes.

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

Yes—via Modbus RTU (RS485) or optional Ethernet/IP gateway; digital I/O signals for alarm, run status, and door open/closed are provided.

Is GMP-compliant validation support available?

We supply IQ/OQ templates, URS guidance documents, and on-site SAT execution services through certified third-party partners.

What maintenance intervals are recommended?

Compressor oil inspection every 24 months; humidifier tank cleaning weekly; air filter replacement quarterly; full system verification annually.

Are custom insulation thicknesses or explosion-proof configurations offered?

Yes—specialized variants including ATEX-certified versions (II 2G Ex db IIB T4 Gb) and vacuum-compatible designs are available under OEM engineering collaboration.