KJ GROUP DZF-6050-HT High-Temperature Vacuum Oven with Rotameter (53 L, 500 °C Max)

Overview

The KJ GROUP DZF-6050-HT is a high-temperature vacuum oven engineered for controlled thermal processing under inert or reactive atmospheres. Designed for materials science laboratories, R&D centers, and advanced manufacturing QA/QC environments, it integrates vacuum capability, programmable atmosphere control, and robust high-temperature operation up to 500 °C (rated continuous use at 400 °C). Its core architecture employs a double-walled chamber with high-purity alumina fiber insulation and a mirror-finish 304 stainless steel interior—minimizing thermal mass while ensuring long-term dimensional stability and resistance to oxidation. The system operates on the principle of convective heat transfer in reduced-pressure environments, where gas flow rate (via calibrated rotameter), vacuum level, and temperature profile are independently regulated to enable precise thermal treatment protocols such as degassing, solvent removal, catalyst activation, pre-sintering, and moisture-sensitive annealing.

Key Features

• High-temperature chamber rated to 500 °C, with continuous operational capability up to 400 °C and ±3 °C temperature uniformity across the working volume
• Integrated 50–500 mL/min glass-tube rotameter with stainless steel housing and precision needle valve for real-time gas flow regulation during vacuum or purged operation
• Double-walled construction with high-density alumina fiber insulation (≥99.8% Al₂O₃ purity) and seamless 304 stainless steel inner chamber for optimal thermal retention and corrosion resistance
• Fluorosilicone (fluoroelastomer) door gasket compatible with elevated temperatures and common process gases (N₂, Ar, H₂, forming gas); sealed via dual-point mechanical clamping
• 30-segment PID programmable controller supporting ramp-soak profiles, automatic cooling sequences, and over-temperature cutoff (hardware-independent safety thermostat)
• KF-25 vacuum flange compliant with ISO-K standard; compatible with dual-stage rotary vane pumps (133 Pa base pressure) or optional high-vacuum turbomolecular pumping systems
• Water-cooled door seal interface with standardized 6.35 mm OD quick-connect fittings for integration with external chillers or tap-water circulation units

Sample Compatibility & Compliance

The DZF-6050-HT accommodates a wide range of sample forms—including powders, pellets, thin films, coated substrates, and ceramic green bodies—within its 53 L chamber. Two removable 304 stainless steel tray supports allow flexible vertical staging and ensure unobstructed gas circulation. All wetted surfaces are electropolished or passivated to prevent catalytic side reactions. The unit conforms to CE marking requirements under the EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. While not intrinsically rated for hazardous area use, its gas-handling configuration complies with general laboratory ventilation best practices per ANSI Z9.5 and ISO 14644-1 Class 8 cleanroom-compatible installation guidelines. For GLP/GMP-regulated workflows, optional data logging modules support 21 CFR Part 11-compliant audit trails when paired with validated software platforms.

Software & Data Management

The embedded 7-inch color touchscreen interface provides local parameter entry, real-time trend visualization (temperature, setpoint, elapsed time), and event logging (e.g., door open/close, alarm triggers, program completion). USB export enables CSV-formatted session records for traceability. Optional Ethernet-enabled controllers support Modbus TCP integration into centralized SCADA or MES systems. When used with KJ GROUP’s KJ-DataLink software suite (v3.2+), users gain remote monitoring, multi-unit synchronization, and automated report generation aligned with ISO/IEC 17025 documentation standards.

Applications

• Thermal desorption of volatile organics from nanocomposites and MOFs prior to BET surface area analysis
• Controlled atmosphere annealing of battery electrode coatings (LiCoO₂, NMC, Si-anodes) under nitrogen or argon
• Pre-oxidation of metal foams and porous sintered components to stabilize microstructure before HIP processing
• Residual solvent removal from pharmaceutical granules under vacuum-nitrogen purge, supporting ICH Q5C stability protocol adherence
• Outgassing of optical components and vacuum chamber subassemblies prior to UHV integration
• Heat treatment of piezoelectric ceramics (PZT, BaTiO₃) with programmable dwell cycles to optimize domain alignment

FAQ

What is the maximum recommended continuous operating temperature?
The DZF-6050-HT is rated for continuous operation at 400 °C. Short-term excursions to 500 °C are permitted for calibration or process qualification, but extended exposure above 400 °C may accelerate insulation aging.
Can the rotameter be recalibrated in-house?
Yes—the glass tube rotameter is field-serviceable using certified reference gases and traceable flow standards per ISO 6706. KJ GROUP provides calibration certificates and adjustment tools upon request.
Is the chamber vacuum-tight at elevated temperatures?
Yes. The fluorosilicone gasket maintains sealing integrity up to 300 °C; for sustained >300 °C operation, optional high-temp metal-CIP gaskets are available.
Does the system support inert gas purging during cool-down?
Yes. The integrated rotameter and inlet valve allow continuous low-flow inert gas introduction throughout the cooling phase to prevent oxidation of sensitive samples.
What vacuum pump compatibility is verified?
The KF-25 port has been tested with Edwards RV8, Leybold TRIVAC D16B, and Agilent DS-202 dual-stage rotary vane pumps. Molecular pump compatibility requires an intermediate cold trap and vacuum interlock module (sold separately).