Hefei Kejing DZF-6050-220V-MS Programmable Vacuum Drying Oven

Overview

The Hefei Kejing DZF-6050-220V-MS is a benchtop programmable vacuum drying oven engineered for precise thermal processing under reduced-pressure conditions. It operates on the fundamental principle of lowering the boiling point of volatile components—such as solvents, moisture, or residual monomers—by reducing ambient pressure, thereby enabling gentle, low-temperature drying without thermal degradation. This makes it particularly suitable for heat-sensitive samples in pharmaceutical formulation, polymer research, battery material synthesis, and electronics encapsulation. The unit integrates a microprocessor-based PID temperature controller with 28-segment programmability, allowing users to define complex thermal profiles—including ramp rates, hold durations, cooling stages, and power modulation—while maintaining stable vacuum integrity throughout the cycle. Its 52 L internal volume (715 × 345 × 370 mm) provides scalable capacity for medium-throughput laboratory workflows, balancing spatial efficiency with operational flexibility.

Key Features

• 28-step programmable temperature/vacuum profile with independent ramp rate, soak time, and power control per segment
• PID-controlled heating system with 0.1 °C resolution and ±5 °C uniformity across the chamber (measured per ASTM E2203)
• Vacuum monitoring via analog gauge calibrated to −0.1 MPa (gauge), corresponding to ≤133 Pa absolute pressure
• Double-wall construction with 76 mm thick glass fiber insulation for minimized thermal loss and external surface temperature compliance per IEC 61010-1
• Chamber fabricated from electropolished 304 stainless steel for corrosion resistance and ease of cleaning
• Reinforced tempered glass door with polycarbonate safety barrier and dual-seal silicone gasket ensuring long-term vacuum retention
• Stainless steel vacuum and purge lines (6.35 mm ID) resistant to organic vapors and acidic condensates
• Integrated over-temperature protection and automatic shutdown on sensor failure or door opening during vacuum operation

Sample Compatibility & Compliance

The DZF-6050-220V-MS accommodates a broad range of sample formats including Petri dishes, crucibles, vials, coated wafers, electrode sheets, and small-volume reaction vessels. Its inert 304 stainless steel interior and absence of catalytic surfaces prevent cross-contamination during solvent removal or outgassing procedures. The unit complies with general laboratory safety standards including IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and meets structural requirements for Class II, Division 1 environments when operated within specified temperature and vacuum limits. While not certified for GMP manufacturing use out-of-the-box, its repeatable thermal profiles, traceable temperature calibration points, and stable vacuum performance support GLP-aligned documentation protocols. Users requiring FDA 21 CFR Part 11 compliance may integrate external data loggers with audit-trail functionality.

Software & Data Management

This model features an embedded digital controller with local parameter storage and real-time display of chamber temperature, setpoint, elapsed time, and vacuum status. No proprietary software or USB connectivity is included; however, analog output (0–5 V or 4–20 mA) is available upon request for integration into centralized SCADA or LIMS platforms. Temperature verification can be performed using NIST-traceable thermocouples inserted through the optional side port (not standard). For regulatory traceability, users are advised to maintain manual logs of program IDs, start/end times, peak temperatures, and final vacuum levels—practices aligned with ISO/IEC 17025 clause 7.7 on result reporting.

Applications

• Moisture and solvent removal from hygroscopic powders (e.g., LiCoO₂ cathode materials, MOFs, APIs)
• Thermal curing of epoxy resins and silicone elastomers under inert or vacuum conditions
• Pre-vacuum degassing prior to resin impregnation or vacuum-assisted lamination
• Drying of chromatography columns, desiccants, and calibration standards
• Accelerated aging studies where controlled thermal stress under sub-atmospheric pressure simulates long-term storage conditions
• Removal of entrapped air from thin-film coatings prior to sintering or annealing

FAQ

What vacuum pump is compatible with this oven?
A single-stage rotary vane pump rated for ≥4 L/min free air displacement and ultimate vacuum ≤100 Pa is recommended. Dual-stage pumps are incompatible due to excessive backstreaming risk and potential oil migration into the chamber.
Can the oven operate continuously at 300 °C?
No. Continuous operation is rated to 250 °C. Exposure to 300 °C is limited to ≤8 hours per cycle to preserve heater element longevity and insulation integrity.
Is the chamber pressure reading absolute or gauge?
The analog gauge displays relative (gauge) pressure from 0 to −0.1 MPa. Absolute pressure at full vacuum is ≤133 Pa, verified by third-party calibration.
How is temperature uniformity validated?
Uniformity is measured per ASTM E2203 using nine calibrated thermocouples placed at standardized locations (center, six face centers, two upper corners); deviation is reported as maximum deviation from setpoint.
Are replacement shelves and gaskets available?
Yes. Optional aluminum wire mesh shelves (300 × 300 mm) and high-temperature silicone door gaskets (part no. DZF-GSK-01) are stocked and shipped globally.