The Yamato DNF-411 is the 90 L, 220V-nominal member of the DNF energy-saving convection-oven family (brochure model DNF410), a wind-velocity-adjustable forced-circulation oven rated to 260 °C with a 10-step blower, an exhaust damper, microcomputer PID control, and 32-step program operation. It is the 200 V single-phase sister of the 100V DNF-401, priced identically, for 220 V laboratories needing 90 L of adjustable-airflow dry heat to 260 °C.
Key Specifications
| SKU | DNF-411 |
| Brochure model | DNF410 (90 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 | 90 L |
| Internal dimensions (W×D×H) | 450 × 450 × 450 mm |
| External dimensions (W×D×H) | 580 × 646 × 860 mm |
| Heater | Stainless pipe heater, 1.25 kW |
| Blower | Sirocco fan / DC brushless motor, 10 W, 10-step wind-velocity control |
| Power supply | 200V AC single-phase, 7A, 50/60 Hz (US nominal 220V) |
| Weight | Approx. 61 kg |
| Shelves | 2 stainless punching-metal shelves (15 kg/shelf); 11 shelf-bracket steps at 30 mm |
| Controller | PID by microcomputer (VI CR3 type), K-thermocouple |
Application Profile
The 90 L DNF-411's 260 °C ceiling and adjustable airflow suit a broad range of dry-heat processing on 220 V service. It handles general and high-temperature drying of samples and materials requiring up to 260 °C, and curing and heat conditioning of coatings, adhesives, and components on defined ramp/soak profiles. Airflow-sensitive drying of light or powdered samples is supported by dialing down the 10-step fan, while moisture and gravimetric workflows benefit from dry-to-constant-weight determinations at adjustable uniformity. Multi-stage method development is handled across 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. (See gravity-vs-forced-convection-oven.)
Design Architecture
The DNF-411 uses wind-velocity-adjustable forced circulation via a sirocco fan on a DC brushless motor (10 W, 10 steps) with a 1.25 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, 7 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 temperature does the DNF-411 reach? The DNF-411 has a control range of room temp. +5 °C to 260 °C, with ±0.5 °C adjustment accuracy and ±2.5 °C distribution accuracy at 260 °C.
What is the capacity of the DNF-411? The DNF-411 is a 90 L oven with internal dimensions of 450 × 450 × 450 mm and external dimensions of 580 × 646 × 860 mm.
What voltage does the DNF-411 require? It is specified for 200V AC single-phase, 7 A service (US nominal 220V); the 100V sister model is the DNF-401. The single-phase 200 V connection should be made by a licensed contractor.
Does the DNF-411 have adjustable airflow? Yes. It uses wind-velocity-adjustable forced circulation via a sirocco fan on a DC brushless motor with 10-step wind-velocity control, plus a front sliding-knob exhaust damper to trade airflow uniformity against sample disturbance and moisture venting.
Can the DNF-411 run programmed temperature profiles? Yes. Operation modes include fixed temperature, auto-start, auto-stop and 32-step program operation, plus timer, clock and a total-operating-hours counter under a microcomputer PID controller.
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), stacking fittings, extra shelves, and door options are available.
Confirm at quote:
- Voltage and plug. 220V-nominal variant maps to the brochure's 200V AC single-phase / 7 A rating; the 100V sister is the DNF-401. Confirm your 200 V single-phase service.
- Temperature and program profile. Target ≤ 260 °C, ramp/soak steps, and airflow (fan-step) preference.
- Footprint and accessories. 580 × 646 × 860 mm external (confirm bench clearance and back-surface exhaust routing), plus any additional shelves, stand, or stacking fittings.
- Lead time and warranty. Per Yamato standard capital-equipment terms.
Request a quote to configure the DNF-411 for your 220 V drying and conditioning workflow.
DNF wind-velocity-adjustable oven family (capacity ladder): DNF400/410 (90 L, this unit) → DNF600/610 (150 L) → DNF810 (300 L) → DNF910 (540 L). The 300 L and 540 L sizes are 200 V single-phase only.
