Yiheng DZF-6092 Desktop Vacuum Drying Oven with Microprocessor Temperature Control and Timer Function
| Brand | Yiheng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DZF-6092 |
| Instrument Type | Vacuum Oven |
| Temperature Range | RT+10 to 200 °C |
| Temperature Uniformity | ±1 °C |
| External Dimensions (W×D×H) | 740 × 610 × 591 mm |
| Internal Chamber Dimensions (W×D×H) | 450 × 450 × 450 mm |
| Temperature Resolution | 0.1 °C |
| Operating Ambient Temperature | +5 to 40 °C |
| Chamber Material | Stainless Steel (AISI 304) |
| Heating Method | Forced Air Circulation |
| Ultimate Vacuum Level | ≤133 Pa |
| Control System | Microprocessor-based PID Controller with Programmable Timer |
Overview
The Yiheng DZF-6092 Desktop Vacuum Drying Oven is an engineered solution for precise thermal processing under reduced-pressure environments. It operates on the fundamental principle of lowering the boiling point of solvents and moisture through vacuum application—enabling gentle, uniform drying of thermally labile compounds without thermal degradation. Unlike conventional convection ovens, this unit integrates a robust vacuum system with microprocessor-driven PID temperature regulation, ensuring stable setpoint maintenance across the full operating range (RT+10 °C to 200 °C). Its compact desktop footprint and sealed stainless-steel chamber make it suitable for routine quality control labs, R&D facilities, and academic institutions where space efficiency, repeatability, and inert-atmosphere capability are critical.
Key Features
- Forced-air circulation heating system ensures rapid heat transfer and high spatial temperature uniformity (±1 °C) within the 450 mm³ stainless-steel chamber.
- Microprocessor-based PID controller with 0.1 °C resolution and programmable timer supports unattended operation and protocol reproducibility.
- Double-layer tempered glass door with silicone gasket seal enables real-time visual monitoring while maintaining vacuum integrity down to ≤133 Pa.
- Adjustable door latch mechanism and integrally molded silicone door seal minimize leakage and extend vacuum hold time between cycles.
- Chamber constructed from AISI 304 stainless steel—resistant to corrosion, compatible with cleaning agents, and compliant with GLP laboratory hygiene standards.
- Vacuum port with standard KF-16 flange allows connection to external vacuum pumps and optional inert gas (N₂ or Ar) purging systems for oxygen-sensitive applications.
Sample Compatibility & Compliance
The DZF-6092 accommodates a broad spectrum of sample types—including pharmaceutical intermediates, polymer films, biological tissues, ceramic precursors, and hygroscopic powders—without risk of oxidation or decomposition. Its ability to operate under inert gas overlay satisfies requirements for ASTM E145-22 (Standard Practice for Gravity-Convection and Forced-Ventilation Ovens) and ISO 5725 (accuracy and precision of measurement methods) when configured with calibrated pressure and temperature sensors. While not intrinsically certified for hazardous location use, the unit complies with IEC 61010-1 safety standards for laboratory electrical equipment and supports audit-ready documentation practices required under FDA 21 CFR Part 11 when paired with validated data logging software.
Software & Data Management
The integrated microprocessor controller stores up to 10 user-defined drying programs, each with independent ramp/soak profiles and timer settings. Optional RS485 communication interface (available upon request) enables integration with LabView, SCADA, or LIMS platforms for centralized parameter logging and remote status monitoring. All temperature setpoints, actual chamber readings, vacuum status, and elapsed time are timestamped internally; manual export via USB is supported in CSV format for traceability in GMP-compliant workflows. Audit trail functionality—including operator ID, parameter changes, and alarm events—is configurable to align with ALCOA+ data integrity principles.
Applications
- Drying heat-sensitive APIs and excipients in pharmaceutical formulation development.
- Removing residual solvents from thin-film coatings prior to SEM or XRD analysis.
- Dehydrating botanical extracts and enzyme preparations without denaturation.
- Conditioning reference standards and calibration weights per ISO/IEC 17025 environmental conditioning guidelines.
- Pre-treating composite substrates before adhesive bonding or metallization processes.
- Stabilizing moisture content in geological samples for gravimetric water-loss determination (ASTM D2216).
FAQ
What vacuum pump is recommended for optimal performance?
A two-stage rotary vane pump with ultimate vacuum ≤5 Pa is advised to achieve and sustain ≤133 Pa within the chamber; oil-free diaphragm pumps may be used for low-contamination applications but require longer evacuation times.
Can the chamber be purged with nitrogen during drying?
Yes—the rear-mounted KF-16 vacuum port supports optional inert gas inlet kits; flow rate should be regulated to maintain slight positive pressure during venting to prevent air ingress.
Is the temperature sensor calibrated traceable to NIST standards?
The built-in PT100 sensor is factory-calibrated; users may perform field verification using a NIST-traceable reference thermometer per ISO/IEC 17025 clause 6.5.
Does the unit support validation protocols such as IQ/OQ/PQ?
Yes—documentation packages including URS templates, test protocols, and blank validation records are available upon request for installation qualification (IQ), operational qualification (OQ), and performance qualification (PQ) execution.
What maintenance intervals are recommended for long-term reliability?
Silicone door gasket inspection every 6 months; vacuum gauge calibration annually; chamber interior cleaning after each use with non-chlorinated alcohol to prevent stainless-steel passivation layer damage.
