LabCompanion PU-225 High-Low Temperature Environmental Test Chamber

Overview

The LabCompanion PU-225 High-Low Temperature Environmental Test Chamber is an engineered solution for controlled thermal stress evaluation of materials, components, and finished products under reproducible laboratory or industrial QA/QC conditions. Designed in accordance with fundamental principles of thermodynamic chamber control—featuring dual-stage refrigeration, PID-controlled forced-air convection, and insulated double-wall construction—the system maintains stable and uniform temperature profiles across its 225-liter working volume. Its operational range spans from –40 °C to +150 °C, enabling simulation of extreme ambient conditions encountered during storage, transportation, or field deployment. The chamber complies with core thermal testing requirements outlined in IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), and MIL-STD-810G Method 502.6, supporting standardized environmental qualification protocols used by electronics, automotive, aerospace, and medical device manufacturers.

Key Features

• Robust stainless-steel interior chamber (SUS304) with seamless welding and rounded corners for corrosion resistance and ease of cleaning
• High-efficiency cascade refrigeration system using environmentally compliant R404A/R23 mixed refrigerant, optimized for rapid cooldown below –20 °C
• PID-based digital temperature controller with real-time monitoring, adjustable ramp/soak profiles, and programmable multi-step cycles
• Forced-air circulation via axial fans with adjustable speed and directional ducting ensures ≤±2 °C temperature uniformity (per IEC 60068-3-5)
• Double-layer vacuum-insulated door with high-visibility tempered glass window and anti-fog heating film for continuous observation without thermal disturbance
• Integrated safety systems including over-temperature cut-off, compressor high-pressure protection, phase failure detection, and door-open alarm

Sample Compatibility & Compliance

The PU-225 accommodates a broad spectrum of test specimens—including PCB assemblies, polymer housings, lithium-ion battery modules, optical sensors, and packaging materials—without requiring custom fixtures. Its 600 × 750 × 500 mm internal cavity allows vertical stacking of standard test trays (e.g., 450 × 450 mm DIN trays) and accommodates samples up to 550 mm in height. All electrical and mechanical interfaces meet CE marking requirements per EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. The chamber’s thermal performance validation report (including uniformity, stability, and recovery tests) supports GLP-compliant documentation workflows and can be supplied upon request for audit readiness.

Software & Data Management

Equipped with RS485 communication interface and Modbus RTU protocol support, the PU-225 integrates seamlessly into centralized lab management systems. Optional PC-based software (LabCompanion EnviroLog v3.2) enables remote monitoring, automated data logging at user-defined intervals (1–600 sec), and export of CSV/Excel-compatible datasets with timestamps, setpoints, and actual chamber readings. Audit trails include operator ID, parameter changes, cycle start/stop events, and alarm history—fully traceable for FDA 21 CFR Part 11 compliance when deployed with electronic signature configuration. Data encryption and role-based access control are configurable per organizational IT security policies.

Applications

• Temperature cycling and thermal shock pre-screening of electronic subassemblies prior to HALT/HASS
• Accelerated aging studies of elastomers, adhesives, and conformal coatings per ASTM D395 and ISO 188
• Stability testing of active pharmaceutical ingredients (APIs) and secondary packaging under ICH Q1A(R2) climatic zone IV conditions
• Validation of cold-chain logistics packaging performance at –40 °C storage simulating polar distribution environments
• Material coefficient of thermal expansion (CTE) correlation studies using integrated thermocouple feedthroughs (optional)

FAQ

What is the recommended calibration interval for the PU-225 chamber?
Annual calibration against NIST-traceable reference sensors is recommended; full verification per ISO/IEC 17025 includes uniformity mapping, stability assessment, and ramp rate validation.
Can the chamber operate continuously at –40 °C?
Yes—the cascade refrigeration architecture and reinforced insulation enable uninterrupted operation at minimum temperature for ≥72 hours, provided ambient room temperature remains ≤30 °C and relative humidity <80% RH.
Is external exhaust ventilation required?
No external venting is necessary for standard operation; however, optional exhaust ducting (DN100) is available for applications involving outgassing solvents or volatile compounds.
Does the system support custom test profiles with hold times and ramp rates?
Yes—up to 99 segments per program, each with independently defined target temperature, dwell time, and linear/non-linear ramp rate, stored in non-volatile memory.
What documentation is provided with shipment?
Factory acceptance test (FAT) report, CE declaration of conformity, electrical safety certificate, and comprehensive English-language operation & maintenance manual.