LabCompanion PH20 Benchtop Temperature and Humidity Controlled Environmental Chamber

Overview

The LabCompanion PH20 is a compact, benchtop environmental test chamber engineered for precise and reproducible temperature and humidity conditioning of materials, components, and small-scale electronic assemblies. It operates on the principle of forced-air convection with dual independent control loops—one for refrigeration-based cooling and electric heating, and another for steam-based humidification and desiccant-assisted dehumidification—enabling stable maintenance of defined climatic profiles per IEC 60068-2, ISO 16750-4, and MIL-STD-810G methodologies. Designed specifically for laboratories with space constraints, the PH20 supports accelerated aging, thermal shock screening (via sequential cycling), and long-term stability assessment under controlled ambient stressors. Its architecture integrates an air-cooled hermetic refrigeration system with high-efficiency copper-aluminum finned evaporators and a PID-controlled resistive heater array, ensuring consistent thermal response across the full operating envelope without reliance on external chillers or compressed air.

Key Features

• Benchtop footprint (520 × 480 × 620 mm external) optimized for integration into QA/QC labs, R&D workstations, and university teaching facilities
• Independent dual-loop climate control: microprocessor-regulated refrigeration circuit (R134a) paired with a stainless-steel steam generator and rotary desiccant wheel for active humidity modulation
• High-fidelity air distribution via asymmetric tangential fan assembly and perforated baffle plates—achieving ≤ ±2 °C temperature uniformity and ≤ ±3% RH uniformity at steady state (per GB/T 5170.2–2008 and GB/T 5170.5–2017)
• Integrated LED-lit observation window with anti-fog coating and silicone-sealed double-glazed borosilicate glass for real-time visual monitoring without thermal leakage
• Multi-layer safety architecture including compressor high-pressure cut-off, overtemperature limiter, phase failure protection, and door interlock switch compliant with EN 61000-6-2/6-4 EMC standards
• Front-panel 7-inch TFT LCD touchscreen with intuitive icon-driven navigation, user-level password protection, and configurable alarm thresholds

Sample Compatibility & Compliance

The PH20 accommodates specimens up to 300 × 300 × 200 mm in volume and weighing ≤ 15 kg, making it suitable for PCBs, polymer films, battery cells, optical lenses, pharmaceutical packaging, and miniature mechanical subassemblies. Chamber interior is constructed from 304 stainless steel with rounded corners and removable stainless trays to support cleaning validation under ISO 14644-1 Class 8 cleanroom protocols. All operational parameters—including setpoint logging, deviation alerts, and cycle completion timestamps—are timestamped and stored locally with optional USB export. The system meets functional requirements for ASTM D4332 (conditioning of plastics), ISO 4892-2 (plastics exposure to fluorescent UV), and IEC 60068-2-1/2/14 (cold/dry heat/rapid temperature change). While not certified to FDA 21 CFR Part 11 out-of-the-box, audit trails and electronic signature capability can be enabled via optional software module for GLP/GMP-aligned environments.

Software & Data Management

The embedded controller supports up to 100 programmable test profiles, each comprising up to 99 segments with ramp/soak logic, conditional branching, and event-triggered data capture. Real-time graphs of chamber temperature/humidity vs. time are displayed during operation and archived automatically in CSV format. Optional PC-based LabCompanion ClimateLink™ software (v3.2+) enables remote monitoring via Ethernet, automated report generation (PDF/Excel), trend analysis with statistical process control (SPC) overlays, and compliance-ready documentation including calibration history, deviation logs, and UCL/LCL annotations. Data integrity safeguards include write-protected storage partitions, SHA-256 file hashing, and configurable retention policies aligned with ISO/IEC 17025 clause 7.5.2.

Applications

• Thermal expansion coefficient (CTE) estimation of composite substrates via dimensional metrology before/after controlled cycling
• Moisture absorption kinetics testing of hygroscopic polymers (e.g., PA6, PBT) per ISO 62 methodology
• Pre-conditioning of lithium-ion pouch cells prior to electrochemical impedance spectroscopy (EIS)
• Stability assessment of adhesive bonds under combined thermal-hygric stress (e.g., automotive trim adhesion per SAE J2527)
• Accelerated shelf-life evaluation of moisture-sensitive medical device packaging (ISO 11607-1 Annex B)
• Qualification of printed circuit board conformal coatings under cyclic damp heat (IEC 60068-2-30)

FAQ

What is the maximum sample weight the PH20 can accommodate without compromising thermal uniformity?
The chamber is validated for loads up to 15 kg placed centrally on the standard tray. Exceeding this mass or introducing dense thermal mass near chamber walls may degrade uniformity beyond specification; load distribution guidelines are provided in the Installation & Operation Manual.
Does the PH20 support programmable ramp-and-soak profiles with humidity coupling?
Yes—humidity setpoints can be synchronized to temperature ramps with independent rate limits (e.g., hold at 25 °C/40% RH for 2 h, then ramp to 60 °C/90% RH at 1.5 °C/min and 2% RH/min simultaneously).
Is third-party calibration certification included with purchase?
A factory-as-built calibration certificate (traceable to NIM China) is supplied. UKAS or A2LA-accredited field calibration services are available upon request at additional cost.
Can the PH20 be integrated into a central lab monitoring network?
Yes—Ethernet port supports Modbus TCP and HTTP API interfaces for integration with LIMS, SCADA, or building management systems (BMS); detailed protocol documentation is provided with software license.
What maintenance intervals are recommended for optimal performance?
Refrigerant pressure verification and condensate drain inspection every 6 months; steam generator descaling and filter replacement every 12 months; full preventive maintenance (including sensor recalibration) every 24 months—per ISO/IEC 17025 maintenance schedule templates.