The Yamato DNF-611 is the 150 L, 220V-nominal member of the DNF energy-saving convection-oven family (brochure model DNF610) — a wind-velocity-adjustable forced-circulation oven rated to 260 °C with a 10-step blower, exhaust damper, microcomputer PID control, and 32-step program operation. It is the 200 V single-phase sister of the 100V DNF-601, priced identically, for 220 V laboratories needing 150 L of adjustable-airflow dry heat to 260 °C.
Key Specifications
| SKU | DNF-611 |
| Brochure model | DNF610 (150 L, 200V) |
| Type | Wind-velocity-adjustable, forced-circulation oven (with exhaust damper) |
| Temperature control range | Room temp. +5 °C to 260 °C |
| Temperature adjustment accuracy | ±0.5 °C (at 260 °C) |
| Temperature distribution accuracy | ±2.5 °C (at 260 °C) |
| Time to reach max. temp. | Approx. 75 min |
| Capacity | 150 L |
| Internal dimensions (W×D×H) | 600 × 500 × 500 mm |
| External dimensions (W×D×H) | 730 × 696 × 910 mm |
| Heater | Stainless pipe heater, 1.5 kW |
| Blower | Sirocco fan / DC brushless motor, 10 W, 10-step wind-velocity control |
| Power supply | 200V AC single-phase, 8A, 50/60 Hz (US nominal 220V) |
| Weight | Approx. 77 kg |
| Shelves | 2 stainless punching-metal shelves (15 kg/shelf); 13 shelf-bracket steps at 30 mm |
| Controller | PID by microcomputer (VI CR3 type), K-thermocouple |
Application Profile
The 150 L DNF-611 suits mid-volume dry-heat processing to 260 °C on 220 V service:
- General and high-temperature drying — larger sample sets and materials to 260 °C.
- Curing and heat conditioning — coatings, adhesives, and components on defined ramp/soak profiles.
- Airflow-sensitive drying — light or powdered samples where the 10-step fan can be dialed down.
- Moisture, gravimetric and method-development work — dry-to-constant-weight determinations plus up to 32 program steps with auto-start / auto-stop scheduling.
The 10-step wind-velocity control plus front exhaust damper let the operator trade airflow uniformity against sample disturbance and moisture venting across the 150 L chamber. (See gravity-vs-forced-convection-oven.)
Design Architecture
The DNF-611 uses wind-velocity-adjustable forced circulation via a sirocco fan on a DC brushless motor (10 W, 10 steps) with a 1.5 kW stainless pipe heater, governed by a microcomputer PID controller (VI CR3 type) reading a K-thermocouple. A sliding-knob exhaust damper on the front controls venting. The SUS304 stainless interior and glass-wool insulation support uniform heating to 260 °C. Operation modes include fixed temperature, auto-start, auto-stop, and 32-step program operation, plus timer, clock, total-operating-hours counter, fan control, and calibration offset. A 50 mm exhaust opening is on the back surface; cable and intake ports (30 mm) are on the right surface.
Safety includes an earth-leakage breaker, an independent overheating-prevention device, a key-lock function, and self-diagnostics for sensor error, heater disconnection, triac short circuit, and automatic overheating prevention. This model is specified for 200V AC single-phase, 8 A service (US nominal 220 V) — the single-phase 200 V connection should be made by a licensed contractor per the brochure.
Frequently Asked Questions
What is the DNF-611's chamber capacity? 150 L (brochure model DNF610), the 200V-nominal member of the DNF wind-velocity-adjustable convection-oven family.
What temperature range and uniformity does it deliver? Room temperature +5 °C to 260 °C, with ±0.5 °C adjustment accuracy and ±2.5 °C distribution at 260 °C.
What does "wind-velocity-adjustable" mean here? A 10-step blower plus a front sliding exhaust damper let the operator trade airflow uniformity against sample disturbance and moisture venting — useful for light or powdered samples.
How many program steps does it support? Up to 32 program steps with auto-start / auto-stop scheduling, plus fixed-temperature, auto-start and auto-stop modes.
What electrical service does it require? 200V AC single-phase, 8A, 50/60 Hz (US nominal 220V); the 100V sister is the DNF-601.
Ordering & Configuration
Standard delivery includes the oven, 2 stainless punching-metal shelves (15 kg/shelf), 4 shelf brackets, and the instruction manual. Optional stand (ON62, OT62), stacking fittings, extra shelves, and door options are available.
Confirm at quote: voltage and plug (the 220V-nominal variant maps to the brochure's 200V AC single-phase / 8 A rating, with the 100V sister being the DNF-601 — confirm your 200 V single-phase service); the temperature and program profile (target ≤ 260 °C, ramp/soak steps, and airflow fan-step preference); shelving and accessories (additional shelves, stand, or stacking fittings); the 730 × 696 × 910 mm external footprint (bench/floor clearance and back-surface exhaust routing); and lead time and warranty per Yamato standard capital-equipment terms.
Request a quote to configure the DNF-611 for your 220 V mid-volume drying workflow.
DNF wind-velocity-adjustable oven family (capacity ladder): DNF400/410 (90 L) → DNF600/610 (150 L, this unit) → DNF810 (300 L) → DNF910 (540 L). The 300 L and 540 L sizes are 200 V single-phase only.
