LabCompanion TH Series High-Low Temperature Environmental Test Chamber

Overview

The LabCompanion TH Series High-Low Temperature Environmental Test Chamber is an engineered precision system designed for rigorous thermal stress testing, reliability validation, and material stability assessment under controlled ambient conditions. Based on the fundamental principles of thermodynamic equilibrium and forced-convection heat transfer, the chamber delivers stable, repeatable, and traceable temperature profiles across a wide operational envelope—from cryogenic −70 °C to elevated +150 °C. Its architecture integrates a dual-stage refrigeration cycle with cascade compression, enabling deep-cold capability without liquid nitrogen dependency. The chamber meets foundational requirements for environmental simulation in accordance with IEC 60068-2, ISO 16750-4, and ASTM D3574 for thermal cycling endurance, while supporting protocol-driven qualification per MIL-STD-810H Method 502.2 (Temperature Variation) and Method 501.7 (High Temperature). It is not rated for hazardous area use and complies with CE marking directives (2014/30/EU EMC & 2014/35/EU LVD), verified through third-party notified body assessment.

Key Features

• Advanced C100 PID-Fuzzy Hybrid Control System: Dual-loop temperature/humidity regulation with auto-tuning, linear calibration compensation, and self-diagnostic fault logging—including real-time Chinese/English bilingual display of error codes and subsystem status.
• Cascade Refrigeration Architecture: Utilizes R404A (high-stage) and R23 (low-stage) refrigerants—fully compliant with Montreal Protocol Annexes and London Amendment restrictions—enabling reliable −70 °C operation without cryogenic assist.
• Optimized Thermal Management: Cold-end modulation control strategy reduces compressor cycling and energy consumption by up to 28% versus conventional on/off or proportional control; certified under CNAS-accredited energy efficiency verification.
• Robust Mechanical Construction: Precision laser-cut stainless steel inner chamber (SUS304), insulated with 120 mm high-density polyurethane foam (λ ≤ 0.022 W/m·K); structural integrity validated via modal analysis and thermal stress simulation using Siemens NX.
• Integrated Safety Redundancy: 14 independent hardware-level protections including high-pressure cut-off, compressor overcurrent/overheat, phase-sequence monitoring, heating element overload, and independent chamber over-temperature limiter (settable up to +200 °C).
• IoT-Ready Expansion Interface: Optional Ethernet module supports Modbus TCP and MQTT protocols; enables remote monitoring, alarm push notifications, and time-synchronized data logging via web-based SCADA interface compatible with Windows/Linux clients and iOS/Android mobile applications.

Sample Compatibility & Compliance

The TH Series accommodates samples up to 1000 L internal volume (1000 × 1000 × 1000 mm), with removable adjustable shelves and standardized 60 mm-diameter cable ports (front/rear/side). It supports both non-powered and powered device-under-test (DUT) configurations, with optional load-power feedthroughs rated up to 3 kW. All units are manufactured under ISO 9001:2015 and ISO 14001:2015 certified quality management systems. Final unit validation includes 72-hour continuous no-fault run testing at extreme setpoints (−70 °C and +150 °C), thermal mapping per ICH Q5C Annex 1 (9-point sensor grid), and full traceability of critical components—including BITZER compressors, Danfoss expansion valves, Siemens PLC controllers, and Schneider electrical distribution modules.

Software & Data Management

The embedded C100 controller provides local data storage of ≥10,000 timestamped records (temperature, humidity, alarms, setpoint changes) with CSV export via USB. Optional PC software (LabCompanion DataView Pro v4.2) enables GLP-compliant audit trail generation, electronic signature support (per FDA 21 CFR Part 11), and automated report generation aligned with ISO/IEC 17025 clause 7.8.2. Historical trend graphs include overlay comparison of multiple test runs, deviation band analysis, and statistical process control (SPC) charts (X̄/R, Cp/Cpk). Network-connected units support centralized fleet monitoring via LabCompanion CloudLink™ platform—deployable on-premise or via AWS-hosted instance—with TLS 1.2 encryption and role-based access control (RBAC).

Applications

• Electronics reliability: PCB solder joint fatigue evaluation, semiconductor package thermal shock screening (JEDEC JESD22-A104), and battery cell thermal runaway propagation studies.
• Automotive component validation: HVAC actuator durability, polymer gasket compression set, and EV battery module thermal cycling per GB/T 31467.3 and UN ECE R100.
• Pharmaceutical stability: ICH Q1A(R2) long-term/accelerated storage condition simulation (25 °C/60% RH, 40 °C/75% RH), container closure integrity testing support.
• Aerospace materials: Composite resin cure profiling, adhesive bond line thermal aging, and elastomer O-ring low-temperature brittleness assessment per ASTM D1329.
• Academic research: Polymer crystallinity kinetics, phase-change material (PCM) hysteresis characterization, and cryo-mechanical property mapping.

FAQ

What is the maximum allowable sample mass for thermal inertia compensation?
The chamber’s control algorithm automatically adjusts ramp rate based on load mass (up to 150 kg) when configured with optional thermal inertia compensation firmware—calibrated per DIN EN 60068-3-5 Annex B.
Does the system support humidity control?
Standard TH models are dry-temperature-only variants. Humidity-capable versions (TH-H series) integrate steam boiler humidification and desiccant dehumidification, achieving 10–98% RH at +20 °C to +85 °C.
Can the chamber operate continuously at −70 °C?
Yes—validated for uninterrupted operation at −70 °C for ≥500 hours, with compressor oil management system and crankcase heater preventing refrigerant migration during extended dwell periods.
Is calibration certificate included with shipment?
Each unit ships with a factory-as-found calibration report (NIST-traceable Pt100 sensors), valid for 12 months; UKAS-accredited calibration services are available as optional add-on.
What maintenance intervals are recommended?
Compressor oil and filter replacement every 6,000 operating hours; refrigerant leak check and system performance verification annually—or per ISO/IEC 17025 accredited laboratory schedule.