Labonce Labonce-800TH-T Temperature and Humidity Controlled Environmental Test Chamber

Overview

The Labonce Labonce-800TH-T is a precision-engineered temperature and humidity controlled environmental test chamber designed for rigorous stability testing, accelerated aging studies, and long-term conditioning of materials, electronics, pharmaceuticals, and packaging under reproducible climatic conditions. Based on the fundamental principles of forced-air convection and dual-loop PID-controlled refrigeration/dehumidification and steam/humidification systems, the chamber maintains stable thermal and hygrometric profiles across its 800 L working volume. Its architecture conforms to GB/T 10586–2006 — the Chinese national standard specifying performance requirements for damp heat test chambers — ensuring metrological traceability and process repeatability in regulated laboratory and industrial QA/QC environments.

Key Features

• High-efficiency air circulation system with optimized duct design ensures uniform temperature distribution (≤2.0 °C) and humidity homogeneity throughout the chamber interior.
• Double-wall construction with high-density polyurethane foam insulation (≥100 mm thickness) minimizes thermal bridging and reduces energy consumption while enhancing moisture retention stability.
• Corrosion-resistant interior chamber fabricated from mirror-finish AISI 304 stainless steel; exterior finished with electrostatically applied epoxy-polyester powder coating for durability and cleanroom compatibility.
• Hermetically sealed, imported scroll-type refrigeration compressor paired with copper-aluminum finned evaporator and condenser for reliable operation at full load over extended cycles.
• 7-inch full-color programmable touchscreen controller supporting up to 120 segments of multi-step cycling programs, real-time curve display, and user-defined alarm thresholds.
• Capacitive humidity sensor (imported, high-temperature rated) with factory calibration certificate, offering long-term drift stability (<0.5 %RH/year) and zero maintenance requirement within operational range.
• Dual independent safety layers: over-temperature cut-off (mechanical backup), dry-run protection for humidifier, and audible/visual local alarm activation upon fault detection.
• Standard equipment includes four adjustable stainless steel shelves, two 50-mm diameter cable/port access ports with silicone rubber plugs, castor wheels with locking brakes, and reinforced door latch mechanism.

Sample Compatibility & Compliance

The Labonce-800TH-T accommodates a broad spectrum of sample types including polymer films, printed circuit boards, lithium-ion battery cells, blister-packaged tablets, optical lenses, and composite laminates. Its internal geometry (1200 × 490 × 1360 mm) supports vertical stacking of stacked trays or custom fixtures without compromising airflow integrity. All critical performance parameters — including temperature deviation, humidity fluctuation, and recovery time after door opening — are validated per GB/T 10586–2006 procedures. While not certified to IEC 60068-2 or ISO 16750 by default, the unit’s control architecture and sensor calibration methodology are fully compatible with GLP/GMP documentation workflows and can be integrated into FDA 21 CFR Part 11-compliant data management ecosystems when paired with external audit-trail-enabled software.

Software & Data Management

Data logging is performed internally at user-selectable intervals (1–600 seconds) and stored in non-volatile memory for up to 180 days of continuous operation. Historical records — including setpoints, actual values, alarm events, and program step transitions — are exportable via USB flash drive in CSV format for post-processing in Excel, MATLAB, or LIMS platforms. Optional RS485 Modbus RTU interface enables integration with building management systems (BMS) or centralized lab automation networks. Firmware updates are delivered via USB and include version-locked calibration coefficients to preserve measurement integrity across maintenance cycles.

Applications

• Stability testing of pharmaceutical products per ICH Q1 guidelines (long-term, accelerated, intermediate conditions)
• Environmental stress screening (ESS) of electronic assemblies prior to burn-in or HALT
• Moisture absorption/desorption kinetics analysis for hygroscopic polymers and composites
• Accelerated corrosion testing of coated metals under cyclic humidity exposure
• Validation of packaging barrier performance (e.g., water vapor transmission rate correlation)
• Pre-conditioning of sensors, optical components, and MEMS devices prior to functional testing

FAQ

What is the maximum allowable ambient temperature for continuous operation?
The chamber is rated for uninterrupted use in ambient environments between +5 °C and +35 °C. Operation outside this range may compromise refrigeration efficiency and humidity control accuracy.
Can the Labonce-800TH-T perform temperature-humidity cycling protocols?
Yes — the programmable controller supports ramp-soak cycles with synchronized temperature and humidity transitions, enabling compliance with GB/T 2423.3 (damp heat, cyclic) and similar test standards.
Is remote monitoring supported out-of-the-box?
Remote viewing and basic parameter adjustment are possible via optional Ethernet/Wi-Fi module (sold separately); however, full supervisory control requires integration with third-party SCADA or LabVIEW-based middleware.
How often does the humidity sensor require recalibration?
The capacitive sensor is factory-calibrated and specified for ≤0.5 %RH/year drift; annual verification against NIST-traceable hygrometers is recommended for GxP-regulated applications.
Are validation documents (IQ/OQ/PQ) available?
Factory-issued calibration reports and installation qualification templates are provided. Operational and performance qualification protocols must be executed on-site by the end user or authorized service partner per ISO/IEC 17025 guidelines.