The Yamato DNE-401 is the 90 L, 115V-nominal member of the DNE energy-saving programmable oven family (brochure model DNE400), a forced-circulation constant-temperature oven rated to 210 °C with microcomputer PID control and 32-step program operation. It is the entry-capacity 100V-service unit in a family that scales to 540 L, delivering uniform, energy-efficient dry heat for general laboratory processing.
Key Specifications
| SKU | DNE-401 |
| Brochure model | DNE400 (90 L, 100V) |
| Type | Forced-circulation, energy-saving programmable oven |
| Temperature control range | Room temp. +10 °C to 210 °C (ambient 23 °C, no load, damper full opened) |
| Temperature adjustment accuracy | ±0.5 °C (at 210 °C) |
| Temperature distribution accuracy | ±2.0 °C (at 210 °C) |
| Time to reach max. temp. | Approx. 60 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, 1.1 kW |
| Blower | Sirocco fan / condenser motor, 10 W |
| Power supply | 100V AC, 12A, 50/60 Hz (US nominal 115V) |
| Weight | Approx. 60 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 DNE-401 suits general laboratory dry-heat processing where energy efficiency and program control matter. It covers general drying and dehydration of glassware, samples, and prepared materials at uniform temperature, plus curing and heat conditioning of coatings and components on defined ramp/soak profiles below 210 °C. Extended constant-temperature soaks use the 49,999-hour operating-hours counter and program repeat, moisture and gravimetric workflows benefit from forced-air uniformity for dry-to-constant-weight determinations, and up to 32 program steps with auto-start / auto-stop scheduling support multi-stage method development.
Forced circulation with an adjustable damper yields tight uniformity (±2.0 °C at 210 °C); the "energy-saving" design targets efficient operation for facilities running ovens continuously. (See gravity-vs-forced-convection-oven.)
Design Architecture
The DNE-401 uses forced circulation via a sirocco fan / condenser motor (10 W) with a 1.1 kW stainless pipe heater, governed by a microcomputer PID controller (VI CR3 type) reading a K-thermocouple. The SUS304 stainless interior and glass-wool insulation support uniform, efficient heating. Operation modes include fixed temperature, auto-start, auto-stop, and 32-step program operation (with repeat), plus timer, clock, total-operating-hours counter, fan control, and calibration offset. Cable, exhaust, and intake ports (30 mm inner diameter) are provided; the exhaust opening is on the top surface for this model.
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 100V AC single-phase, 12 A service (US nominal 115 V).
Frequently Asked Questions
What temperature range and uniformity does the DNE-401 deliver? Room temperature +10 °C to 210 °C, with ±0.5 °C adjustment accuracy and ±2.0 °C distribution accuracy at 210 °C, reaching maximum temperature in about 60 minutes.
How large is it and how many shelves does it hold? 90 L internal (450 × 450 × 450 mm), with 2 stainless shelves (15 kg/shelf) across 11 shelf-bracket steps.
What voltage does the DNE-401 use, and is there a 220V version? It maps to the brochure's 100V AC, 12A rating (US nominal 115V). The 220V sister is the DNE-411.
Is the DNE-401 programmable? Yes. It offers fixed temperature, auto-start, and auto-stop modes plus 32-step program operation with repeat, timer, clock, and a total-operating-hours counter.
Why is it called "energy-saving"? Forced circulation with an adjustable damper yields tight uniformity (±2.0 °C at 210 °C), and the design targets efficient operation for facilities running ovens continuously.
Ordering & Configuration
Standard delivery includes the oven, 2 stainless punching-metal shelves (15 kg/shelf), 4 shelf brackets, and the instruction manual. Optional stands (ON62, OT42), stacking fittings, extra shelves, larger cable ports, and a right-hinged door are available.
Confirm at quote:
- Voltage and plug. 115V-nominal variant maps to the brochure's 100V AC / 12 A rating; the 220V sister is the DNE-411.
- Temperature and program profile. Target ≤ 210 °C, ramp/soak steps.
- Footprint, shelving, and accessories. 580 × 646 × 860 mm external; confirm bench clearance, exhaust routing, and any additional shelves, stand, or stacking fittings.
- Lead time and warranty. Per Yamato standard capital-equipment terms.
Request a quote to configure the DNE-401 for your drying and conditioning workflow.
DNE energy-saving oven family (capacity ladder): DNE400/410 (90 L, this unit) → DNE600/610 (150 L) → DNE810 (300 L) → DNE910 (540 L). The 90 L and 150 L sizes offer both 100V (400/600) and 200V (410/610) variants; 300 L and 540 L are 200 V single-phase.
