LabCompanion P-Series-2 Thermal Shock and Humidity Cycling Chamber

Overview

The LabCompanion P-Series-2 Thermal Shock and Humidity Cycling Chamber is an engineered environmental test system designed for rigorous evaluation of material and component reliability under dynamically alternating temperature and humidity conditions. Based on the principle of controlled thermodynamic cycling—combining precise refrigeration, resistive heating, and vapor-phase humidification—the chamber replicates real-world stress profiles encountered during transportation, storage, and operational life cycles. Its dual-axis control architecture enables synchronized ramp-and-soak profiles across temperature (0°C to 100°C) and relative humidity (30–98% RH), supporting both steady-state conditioning and accelerated degradation testing per international environmental stress screening (ESS) protocols. The unit is constructed to meet structural and thermal integrity requirements for long-term repeatability in QC labs, R&D facilities, and third-party certification laboratories.

Key Features

• Hermetically sealed French Tecumseh refrigeration compressor, integrated with high-efficiency air-cooled single- or two-stage cascade cooling circuits for stable low-temperature performance down to 0°C.
• External stainless steel shallow-surface evaporative humidifier with automatic water recovery and flow regulation—reducing water consumption by up to 70% versus conventional steam-generation systems.
• Dual-layer insulation combining rigid polyurethane foam (≥80 mm thickness) and ultra-fine glass fiber at critical thermal bridges, minimizing heat transfer and improving energy efficiency.
• Japanese-origin digital touch PID controller with SSR output and real-time self-tuning algorithm; delivers setpoint accuracy of ±0.1°C (temperature) and ±1% RH (humidity), with display resolution to 0.01°C/0.1% RH.
• High-uniformity airflow system featuring low-noise, high-torque centrifugal blower and multi-wing impeller design—ensuring ≤±2°C temperature uniformity and ≤±3% RH variation across the working volume.
• Robust mechanical construction: inner chamber fabricated from electropolished SUS304 stainless steel mirror finish; outer shell from A3 cold-rolled steel with phosphate coating and electrostatic powder coating.
• Integrated safety architecture including independent over-temperature cutoff, phase-loss protection, compressor high-pressure cutout, motor thermal overload relay, and leak-current detection.

Sample Compatibility & Compliance

The P-Series-2 accommodates a broad spectrum of physical samples—including PCB assemblies, automotive electronics, polymer housings, medical device enclosures, and aerospace composites—without requiring sample-specific fixtures. Its standard 50 mm diameter test port (optional 25/100 mm variants) supports sensor feedthroughs, power leads, and data cables while maintaining chamber integrity. The chamber conforms to key national standards for environmental testing: GB/T 2423.1–2001 (cold testing), GB/T 2423.2–2001 (dry heat), and GB/T 2423.3–1993 (damp heat, cyclic). While not certified to IEC 60068 or MIL-STD-810 by default, its control fidelity and thermal/hygrometric repeatability enable traceable correlation to those frameworks when operated within validated parameter envelopes and calibrated per ISO/IEC 17025-compliant procedures.

Software & Data Management

The embedded controller supports analog output (4–20 mA) for external data acquisition systems and optional RS485/Modbus RTU interface for integration into centralized lab management platforms. An optional thermal printer or strip-chart recorder can be configured to generate time-stamped hardcopy logs of setpoints and actual values, including ramp rates, dwell durations, and deviation alarms. All recorded data include timestamp, operator ID (if enabled), and system status flags—supporting basic GLP documentation needs. Though native software does not implement FDA 21 CFR Part 11 electronic signature or audit trail functionality, the controller’s non-volatile memory retains last 30 days of operational history, including power interruption events and manual override entries—facilitating root-cause analysis during internal quality audits.

Applications

• Accelerated life testing of consumer electronics subjected to seasonal humidity variations and thermal cycling during global distribution.
• Evaluation of conformal coating adhesion and solder joint integrity in printed circuit boards under combined thermal-hygric stress.
• Validation of packaging barrier performance (e.g., blister packs, foil laminates) against moisture ingress at elevated temperatures.
• Material compatibility screening for elastomers, adhesives, and sealants used in automotive HVAC modules.
• Pre-compliance screening for IEC 60068-2-30 (cyclic damp heat) and JEDEC JESD22-A101 (steady-state damp heat) prior to formal certification.
• Stability studies of pharmaceutical primary packaging under ICH Q1A(R2)-recommended storage conditions (e.g., 40°C/75% RH).

FAQ

What is the difference between this chamber and a standard constant-climate chamber?
This model implements programmable thermal-humidity cycling with defined ramp rates, dwell times, and transition logic—whereas constant-climate chambers maintain fixed setpoints without dynamic profile execution.
Can the chamber operate continuously at 100°C and 98% RH?
Yes, it is rated for continuous operation across the full specified range; however, sustained high-humidity operation above 85% RH at elevated temperatures may require periodic maintenance of the humidifier reservoir and sensor calibration.
Is remote monitoring supported via Ethernet or Wi-Fi?
No native Ethernet or Wi-Fi module is included; communication is limited to 4–20 mA analog output and RS485 Modbus RTU. Third-party gateways may be deployed externally.
Does the unit comply with UL or CE safety standards?
It meets GB 4793.1 (Chinese safety standard for laboratory equipment) and includes all required protective earth bonding and insulation resistance verification. CE marking requires additional EU-type examination and technical file compilation by the end user or authorized representative.
What calibration documentation is provided upon delivery?
A factory calibration report is supplied, covering temperature and humidity sensor verification at three points (low/mid/high) using NIST-traceable reference instruments. Full ISO/IEC 17025 calibration must be arranged separately through an accredited provider.