YAMATO DP-4/6 Programmable Vacuum Drying Oven

Overview

The YAMATO DP-4/6 Programmable Vacuum Drying Oven is an engineered solution for controlled thermal processing under reduced pressure—designed specifically for applications requiring solvent removal, moisture elimination, heat-sensitive sample stabilization, and inert atmosphere drying. Operating on the principle of vacuum-assisted evaporation, the unit reduces ambient pressure within the chamber to lower the boiling point of volatile components, enabling drying at significantly lower temperatures than conventional convection ovens. This minimizes thermal degradation of polymers, pharmaceutical intermediates, biological specimens, and advanced materials such as battery electrode slurries or ceramic precursors. The dual-chamber configuration (DP-43C and DP-63C) accommodates varying throughput demands while maintaining consistent temperature uniformity and pressure stability across the working volume. All models comply with JIS B 7941 and conform to general safety requirements outlined in IEC 61010-1 for laboratory electrical equipment.

Key Features

• Integrated vacuum pump compartment—optimizes lab floor space and simplifies system integration without external plumbing clutter.
• Quick-connect 25 KF flanged exhaust interface and Rc3/8 intake port—enables rapid, leak-tight assembly and disassembly for routine maintenance or pump replacement.
• Optimized evacuation dynamics—reduced chamber volume-to-pump ratio and low-resistance gas pathways achieve target vacuum levels (<0.1 kPa) up to 40% faster than legacy configurations.
• Dual independent control circuits: primary PID temperature regulation (K-type thermocouple input) and a physically separate over-temperature prevention loop—ensuring fail-safe thermal containment even during controller failure.
• Full digital operation via dedicated function keys and up/down navigation—supports precise setpoint entry, real-time monitoring of measured vs. target temperature (green/red 4-digit LED displays), and timer-based sequencing.
• Programmable multi-segment drying profiles—up to 30 steps per program (configurable as 30×1, 15×2, or 10×3), with automatic transition between ramp, soak, and hold phases—essential for validated processes in GLP and GMP environments.
• Comprehensive self-diagnostic firmware—continuously monitors sensor integrity, heater continuity, SSR output status, and power supply anomalies; alerts operators via display code and halts operation upon critical fault detection.

Sample Compatibility & Compliance

The DP-4/6 series accommodates a broad range of sample formats—including Petri dishes, glass vials, aluminum trays, and custom fixtures—thanks to its stainless steel interior (SUS304), fixed shelf configuration (4-tier, spaced at 105 mm or 140 mm intervals), and unobstructed internal geometry. Its wall-mounted direct heating architecture ensures minimal air turbulence and superior temperature homogeneity (±1.5 °C across load zone per JIS Z 8806). The unit supports compliance workflows aligned with USP , ISO 14644-1 (cleanroom-compatible operation when paired with nitrogen purge option), and ASTM D1654 for coated material drying evaluation. Optional RS485 communication enables integration into centralized lab management systems for audit-ready data logging (21 CFR Part 11–compliant when used with validated software).

Software & Data Management

While the DP-4/6 operates autonomously via its embedded microcontroller, it provides multiple hardware-level interfaces for external data capture and remote supervision. The standard 4–20 mA analog output delivers continuous temperature feedback to PLCs or chart recorders. Optional RS485 serial interface supports Modbus RTU protocol for bidirectional command transmission—including start/stop, setpoint override, program upload/download, and real-time alarm status polling. When connected to YAMATO’s optional data acquisition module or third-party SCADA platforms, the oven generates timestamped event logs covering cycle initiation, vacuum attainment, temperature deviation thresholds, and safety interlock activations—facilitating root-cause analysis and regulatory documentation.

Applications

• Pharmaceutical solid dosage form drying—removal of residual solvents from granules prior to tablet compression, per ICH Q5C stability guidelines.
• Electrode coating drying in lithium-ion battery R&D—preserving binder integrity and minimizing particle agglomeration during NMP solvent evaporation.
• Polymer film annealing under inert gas—controlling crystallinity and residual stress in PET, PI, or PVDF membranes.
• Moisture content validation in reference standards—meeting ISO/IEC 17025 calibration traceability requirements through repeatable, documented vacuum cycles.
• Archival document dehumidification—low-temperature desiccation of water-damaged manuscripts without cellulose hydrolysis.

FAQ

What vacuum level can the DP-4/6 achieve without an external pump?

The unit does not include a vacuum pump—it requires connection to a compatible rotary vane or diaphragm pump (e.g., YAMATO VP-300 series) via the supplied 25 KF flange.
Is nitrogen purging supported as a factory-installed option?

Yes—the N₂ introduction kit (optional part number N2-KIT-DP) integrates seamlessly with the Rc3/8 intake port and includes pressure regulator, flowmeter, and check valve.
Can the oven be operated in a Class II biosafety cabinet?

No—due to heat dissipation (2.25–3.15 kW) and required ventilation clearance (minimum 300 mm rear/side spacing), installation outside containment enclosures is mandatory.
Does the controller support password-protected parameter locking?

Yes—the key-lock function prevents unauthorized modification of setpoints, programs, and calibration offsets; access requires numeric code entry.
How is power loss handled during a multi-hour program?

The built-in power-fail recovery retains all active program steps and elapsed time; upon restoration, the unit resumes from the last executed segment unless manual abort is triggered.