ALISN PNC 150 Forced-Air Circulating Drying Oven

Overview

The ALISN PNC 150 Forced-Air Circulating Drying Oven is an industrial-grade laboratory oven engineered for precision thermal processing across research, quality control, and production environments. Utilizing horizontal forced-air convection with a rear-mounted centrifugal blower, the PNC 150 ensures uniform heat distribution throughout its 150 L stainless-steel chamber—critical for applications demanding consistent thermal exposure, such as moisture content determination (per ASTM D2231, ISO 787-2), residual solvent removal, pre-conditioning of polymer samples, and thermal stability testing of pharmaceutical excipients. Its operating range—from ambient +5°C up to 250°C—supports both low-temperature drying and high-temperature sterilization protocols, while the ±0.5°C temperature fluctuation and ±1.5°C uniformity (measured at 150°C per IEC 60068-3-5) reflect compliance with fundamental thermal performance benchmarks for Class II laboratory ovens.

Key Features

• Microprocessor-based PID controller with fuzzy logic algorithm for stable setpoint maintenance and rapid recovery from door-opening disturbances
• Dual operational modes: fixed-setpoint control and multi-segment programmable ramp-soak profiles (up to 30 segments)
• Robust SUS304 stainless-steel interior with seamless, radius-cornered construction—resistant to oxidation, corrosion, and thermal warping even under prolonged 250°C operation
• High-efficiency thermal insulation using ≥80 mm thick mineral fiber panels, minimizing surface temperature rise and reducing energy consumption by up to 22% versus standard 50 mm insulated ovens
• Three-tier adjustable stainless-steel shelving system with quick-release mechanism; shelves support ≥15 kg load per level and are fully removable for cleaning or reconfiguration
• Integrated leveling feet with locking casters (two with brakes) enabling stable positioning on uneven laboratory floors and safe mobility during facility reconfiguration
• Active fresh-air intake system with dual bottom inlets and top exhaust port—enabling controlled atmosphere exchange during volatile solvent evaporation or moisture purge cycles

Sample Compatibility & Compliance

The PNC 150 accommodates a wide range of sample formats—including Petri dishes, weighing boats, glass desiccators, aluminum pans, and standard ISO/ASTM-compliant moisture trays—without compromising thermal homogeneity. Its chamber geometry and airflow design meet the spatial requirements defined in USP <1208> for drying validation studies and align with the chamber volume criteria specified in ISO 17025-accredited calibration procedures for thermal equipment. The oven’s over-temperature cutoff, ground-fault circuit interrupter (GFCI), and real-time sensor diagnostics satisfy essential electrical safety provisions outlined in IEC 61010-1. While not certified for Class B autoclave equivalence, its sustained 250°C capability supports dry-heat sterilization validation per ISO 17665-2 Annex C for non-porous instruments and packaging components.

Software & Data Management

The embedded LCD interface provides local real-time monitoring of chamber temperature, elapsed time, remaining program duration, and active alarm status. Though the base model lacks Ethernet or USB data logging, it supports optional RS-485 Modbus RTU communication (via external module) for integration into centralized lab management systems. All temperature setpoints, ramp rates, soak durations, and alarm thresholds are stored in non-volatile memory with power-fail recovery—ensuring uninterrupted execution following grid interruptions. Audit trail functionality is available via third-party compliant data loggers meeting FDA 21 CFR Part 11 requirements when paired with validated timestamped recording software.

Applications

• Moisture loss-on-drying (LOD) analysis for raw materials in food, pharma, and chemical manufacturing (aligned with AOAC 950.46 and USP <731>)
• Pre-baking of PCB substrates and ceramic green bodies prior to sintering
• Accelerated aging studies of elastomers and adhesives per ASTM D573 and ISO 188
• Drying of filter papers, crucibles, and volumetric glassware in analytical laboratories
• Thermal conditioning of reference standards before gravimetric or spectroscopic analysis
• Residual solvent removal from coated films and thin-film battery electrodes

FAQ

Does the PNC 150 support GLP-compliant temperature validation?
Yes—the chamber geometry, sensor placement (dual PT100 probes: one for control, one for monitoring), and thermal stability profile allow full IQ/OQ/PQ execution using standard thermocouple mapping protocols per ISO 17025 and EU GMP Annex 15.
Can the oven be used for ash content determination per AOAC 942.05?
It meets the temperature range requirement (525–550°C is outside its specification); however, the PNC 150 is not rated for muffle furnace applications. For ashing, ALISN recommends the dedicated PFM series muffle furnaces.
Is the stainless-steel interior electropolished?
No—the SUS304 chamber features a #4 brushed finish, optimized for mechanical durability and cleanability under repeated thermal cycling; electropolishing is available as a custom option (lead time +4 weeks).
What is the maximum recommended load volume for optimal uniformity?
For guaranteed ±1.5°C uniformity at 150°C, total loaded volume should not exceed 60% of chamber capacity (i.e., ≤90 L of solid material or stacked trays).
Are replacement shelves and gaskets available as spare parts?
Yes—SUS304 shelves (P/N: PNC-SH-3), silicone door gaskets (P/N: PNC-GSK-150), and calibrated PT100 sensors (P/N: PNC-SEN-PT100) are stocked and shipped globally within 5 business days.