Yamato DNF Series Ovens are the industry’s first 2-in-1 energy-saving ovens combining both forced and natural convection in a single unit (models 301–611). These programmable constant temperature ovens feature adjustable air velocity and exhaust dampers, ideal for high-precision and eco-friendly lab heating applications.
With advanced PID Z control, flexible air circulation, and up to 99-step programmable operation, the DNF Series balances performance, usability, and sustainability in a compact, dust-resistant design.
Key Features:
- Dual convection system: Forced & Natural Convection in one unit (models 301–611)
- 10-stage digital air velocity control (600–1500 rpm)
- Eco-designed with adjustable front damper to reduce power usage
- Superior chamber insulation and dust-tight design for sample protection
- 99-step programmable operation with repeat function
- Fluorescent display with intuitive ▲/▼ control interface
- CO₂ and power monitoring, calibration offset, recovery mode
Specifications
Performance
- Temp. Set Range: 0–130°C (Natural), 0–270°C (Forced)
- Temp. Control Range: RT+25~120°C (Natural), RT+15~260°C (Forced)
- Accuracy: ±0.3°C (Forced), ±0.5°C (Natural)
- Distribution Accuracy: ±2.5°C (Forced), ±5°C (Natural)
- Temp. Rise Time: 20–105 min depending on model/mode
Airflow & Chamber Design
- Air Velocity Control: 10-step digital (0–1500 rpm)
- Damper: Adjustable intake/exhaust system (complete exhaust possible)
- Chamber Material: Stainless steel interior
- Exterior: Cold-rolled steel, chemical-resistant finish
- Insulation: Glass wool
- Cable & Exhaust Ports: 33mm cable port (right), 50mm exhaust (rear)
Control & Interface
- Controller: V-type PID Z control
- Display: 4-digit green LED (measured), 5-digit orange LED (set)
- Functions: Fixed temp, program start, auto start/stop, quick stop
- Additional: CO₂ and power monitoring, air velocity variable function, recovery mode, data backup
- Timer: 1 min to 99 hr 59 min or 24 hr operation
Safety
- Sensor: K-type dual thermocouple
- Heater Control: Triac with zero-cross
- Diagnostics: Sensor failure, heater disconnection, SSR short, fan motor failure, overheat prevention
- Breaker: Earth leakage + overcurrent (30mA sensitivity)
- Door Interlock: Fan and heater shut off when door opens
Models & Capacities
| Model | Capacity | Internal Dimensions (mm) | External Dimensions (mm) | Power Supply | Weight |
|---|---|---|---|---|---|
| DNF301-115V / 220V | 27L | 300×300×300 | 430×495×740 | AC115V 7.5A / AC220V | ~50kg |
| DNF401 / 411 | 90L | 450×450×450 | 580×645×890 | AC115V 11A / AC220V 6A | ~75kg |
| DNF601 / 611 | 150L | 600×500×500 | 730×695×940 | AC115V 15A / AC220V 8A | ~90kg |
| DNF811 | 300L | 600×500×1000 | 730×695×1685 | AC220V 15.5A | ~135kg |
| DNF911 | 540L | 1090×500×1000 | 1220×695×1685 | AC220V 18.5A | ~210kg |
Included Accessories
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Shelves & Brackets:
- DNF301: 2 shelves / 4 brackets
- DNF401/411: 2 shelves / 4 brackets
- DNF601/611: 4 shelves / 8 brackets
- DNF811: 8 shelves / 16 brackets
- DNF911: 8 shelves / 16 brackets
- Operator’s Manual & Documentation
- 1-Year Manufacturer’s Warranty