Yoyi DZF-6050SC Automatic Nitrogen-Purged Vacuum Drying Oven

Overview

The Yoyi DZF-6050SC Automatic Nitrogen-Purged Vacuum Drying Oven is an engineered solution for controlled thermal processing under inert or oxygen-depleted atmospheres. It integrates vacuum drying, programmable pressure maintenance, and automated nitrogen purging into a single robust platform. Based on the principle of reducing partial pressure of water vapor via vacuum evacuation—thereby lowering boiling points—and suppressing oxidative degradation through nitrogen displacement, this oven enables precise, reproducible dehydration of thermally labile, oxidation-sensitive, or chemically unstable materials. Its design conforms to fundamental requirements for inert-atmosphere thermal treatment in regulated environments, supporting protocols aligned with ISO 554 (standard atmospheres for conditioning and testing), ASTM E145 (specification for gravity-convection and forced-ventilation ovens), and general GLP-compliant laboratory practice.

Key Features

• Microprocessor-based PID temperature control system with real-time monitoring, over-temperature alarm, and auto-recovery after power interruption—retaining all set parameters in non-volatile memory.
• Dual-layer tempered glass observation door with integrated silicone gasket, enabling visual inspection without compromising vacuum integrity or inert gas retention.
• Electropolished stainless steel interior chamber (AISI 304 grade) and cold-rolled steel exterior with electrostatic epoxy coating ensure corrosion resistance and long-term structural stability.
• Ceramic fiber insulation between inner chamber and outer casing minimizes thermal loss and improves energy efficiency—achieving stable chamber temperatures with low power consumption (1200 W rated).
• Aluminum-coated aluminum alloy shelves—formed via precision stamping—exhibit high thermal conductivity, minimal oxidation at elevated temperatures, and uniform heat distribution across the load area.
• Integrated electromagnetic valve-controlled nitrogen inlet (Φ10 mm quick-connect port) supports fully automated purging cycles, including timed fill, pressure-hold, and multi-stage purge sequences.
• LED digital vacuum gauge with 5-segment, 5-step programmable pressure control—each segment adjustable from 0 to 9999 minutes—enables complex drying profiles such as ramp-hold-evacuate-purge-repeat sequences.

Sample Compatibility & Compliance

The DZF-6050SC accommodates a broad range of sample formats: powders, granules, thin films, coated substrates, pharmaceutical intermediates, biological extracts, and polymer precursors. Its chamber volume (53.5 L) and dual-shelf configuration support scalable batch processing while maintaining spatial temperature uniformity per ASTM E2207. The inert gas compatibility meets requirements for handling air-sensitive catalysts (e.g., Pd/C, Raney Ni), lithium-ion battery electrode materials, and moisture-sensitive APIs. While not certified to IEC 61010-1 for hazardous location use, the unit complies with CE-marked electrical safety standards when operated within specified ambient conditions (5–40°C, ≤80% RH non-condensing). Vacuum performance (≤133 Pa) satisfies typical pre-drying and degassing needs referenced in USP (Packaging Integrity Evaluation) and ISO 11607-1 (sterile barrier systems).

Software & Data Management

This model operates via embedded firmware with no external PC dependency. All operational parameters—including target temperature, dwell time, vacuum setpoints, nitrogen purge duration, and pressure-hold intervals—are configured via intuitive menu-driven navigation on the backlit LCD interface. The system logs timestamped event records (e.g., “Vacuum reached 128 Pa at 14:22:05”, “N₂ valve opened at 14:25:18”) in internal memory, accessible for manual review. Though it lacks USB/Ethernet connectivity or 21 CFR Part 11-compliant electronic signatures, its parameter retention and alarm history meet basic audit-trail expectations for non-GMP research labs and QC environments where traceability is documented manually.

Applications

• Drying heat-sensitive pharmaceutical compounds without thermal decomposition or racemization.
• Removing residual solvents from OLED precursor layers prior to vacuum deposition.
• Conditioning hygroscopic reference standards in metrology laboratories per ISO/IEC 17025 guidelines.
• Pre-treating ceramic green bodies and metal-organic frameworks (MOFs) to prevent hydrolysis during sintering.
• Accelerating moisture removal from composite prepregs used in aerospace component manufacturing.
• Stabilizing enzyme preparations and lyophilized biologics intermediates under nitrogen before final packaging.

FAQ

What vacuum level can the DZF-6050SC achieve, and how is it measured?
The chamber achieves a base vacuum of ≤133 Pa (1 Torr), verified using an integrated piezoresistive vacuum transducer with LED digital display. Calibration is factory-set and traceable to national pressure standards.
Can the nitrogen purging sequence be synchronized with vacuum cycles?
Yes—the instrument supports sequential or overlapping operation: vacuum evacuation may be followed by automatic nitrogen backfill to a user-defined pressure, then held for a programmable duration before repeating.
Is the chamber suitable for use with flammable solvents?
No. This unit is not explosion-proof and must not be used with Class I flammable vapors. Solvent removal should only occur after initial air drying or under strictly controlled, low-concentration conditions validated by risk assessment.
How many shelves are included, and are additional ones available?
Two aluminum-coated stainless steel shelves are supplied standard. Optional third shelves (part #DZF-SH-03) and shelf supports are available upon request.
Does the oven include a vacuum pump?
Yes—a dedicated oil-lubricated rotary vane vacuum pump is mounted in the lower cabinet, pre-connected and tested prior to shipment. Pump oil replacement intervals and maintenance procedures are detailed in the technical manual.