OK Environmental Test Chamber OK-TH-800.00

Overview

The OK Environmental Test Chamber OK-TH-800.00 is a precision-engineered benchtop temperature and humidity controlled chamber designed for reproducible environmental simulation in industrial R&D, quality assurance, and compliance validation laboratories. It operates on a dual-loop control principle: thermal regulation via resistive heating and air-cooled refrigeration, coupled with humidity modulation through water-heated evaporation and condensation-based dehumidification. The chamber maintains stable, programmable conditions across its operational envelope—15–45°C and 30–98% RH—enabling standardized testing per international environmental stress protocols. Its robust architecture supports long-duration cyclic tests, including steady-state wet-heat exposure and stepwise temperature-humidity transitions, making it suitable for accelerated aging, reliability screening, and pre-compliance verification prior to formal qualification per IEC 60068-2, MIL-STD-810, or ISO 16750 series standards.

Key Features

• High-stability microprocessor-based controller with 7-inch full-color TFT touchscreen interface supporting both fixed-value and multi-segment programmable operation (up to 13,450 steps)
• Dual-channel real-time monitoring of temperature and relative humidity via calibrated platinum RTD and capacitive RH sensors
• Stainless steel (SUS304) interior and exterior construction with 100 mm thick high-density glass fiber insulation for thermal integrity and corrosion resistance
• Double-layer high-tension silicone gasket door seal and multi-layer laminated heated observation window with conductive film for anti-fog performance
• Air-circulation system driven by top-mounted axial fan ensuring uniform distribution of conditioned air (≤ ±2°C spatial deviation at working volume center)
• Integrated safety interlocks: overtemperature cut-off, low-water-level shutoff for humidifier, and automatic refrigeration shutdown during abnormal ambient load conditions

Sample Compatibility & Compliance

The OK-TH-800.00 accommodates large-format test specimens—including automotive ECUs, aerospace composite panels, consumer electronics assemblies, and industrial control modules—within its optimized internal volume. Its design conforms to fundamental mechanical and electrical safety requirements outlined in IEC 61010-1. While not certified as Class I medical or explosion-proof equipment, the chamber supports GLP-aligned workflows through traceable calibration records, audit-ready event logging, and optional time-stamped data export (CSV/USB). When integrated into validated laboratory systems, it facilitates testing aligned with ASTM D4332 (conditioning of plastics), ISO 4892-2 (plastics exposure to humid heat), and JIS Z 8701 (environmental testing methods). All firmware and controller logic are designed to support future integration with LIMS or MES platforms via RS485 Modbus RTU or Ethernet TCP/IP protocols.

Software & Data Management

The embedded controller provides native USB mass storage functionality for direct curve recording, parameter history, and alarm logs. Data files are timestamped and structured in industry-standard CSV format for seamless import into statistical analysis tools (e.g., JMP, Minitab) or QA documentation systems. Optional firmware upgrades enable extended data retention (≥30 days at 1-min sampling intervals), password-protected user access levels (Operator, Engineer, Administrator), and electronic signature support for critical test execution. Though not inherently 21 CFR Part 11 compliant out-of-the-box, the system can be configured—through documented SOPs, external audit trail servers, and periodic calibration verification—to meet GMP/GLP data integrity expectations when deployed in regulated manufacturing environments.

Applications

• Accelerated life testing of printed circuit boards under combined thermal and hygroscopic stress
• Pre-conditioning of lithium-ion battery modules prior to cycle-life evaluation
• Stability assessment of polymer-based adhesives and encapsulants used in automotive lighting assemblies
• Environmental screening of optical sensor housings exposed to tropical climatic profiles
• Validation of packaging material barrier performance under high-RH storage scenarios
• Process qualification support for conformal coating curing and post-bake moisture equilibration

FAQ

What is the maximum internal volume supported by the OK-TH-800.00 model?

The OK-TH-800.00 is engineered for benchtop deployment; its nominal internal volume is approximately 800 liters, optimized for medium-to-large industrial components without requiring floor-standing infrastructure.
Does this chamber support sub-zero temperature operation?

No—the OK-TH-800.00 is rated for 15–45°C operation only. For low-temperature capability, OK Instruments offers alternative models (e.g., OK-THF series) with cascade refrigeration and extended ranges down to –70°C.
Can humidity be controlled independently of temperature?

Yes—the controller allows decoupled setpoint definition for temperature and RH within the specified operating envelope, enabling isothermal humidity ramps and constant-RH thermal sweeps.
Is third-party calibration certification included with purchase?

Factory calibration certificates (traceable to NIM or CNAS-accredited labs) are provided standard; full ISO/IEC 17025 calibration reports require optional service engagement at time of order.
What maintenance intervals are recommended for sustained accuracy?

Routine inspection of humidifier water reservoir, condensate drain lines, and air filter is advised every 150 operating hours; annual recalibration of sensors and verification of thermal/humidity uniformity per ISO 17025 procedures is strongly recommended.