The Yamato DE-411 is the 91 L member of the DE/DT high-temperature clean-oven series (brochure model DE410) — a forced-convection clean oven that maintains Class 100 cleanliness during temperature stability via a heat-resistant HEPA filter, rated to 260 °C with microprocessor PID control and program operation. It is the entry-capacity clean oven in the series, designed for particle-sensitive drying, curing, and baking where cleanliness of the process air is as important as temperature control.
Key Specifications
| SKU | DE-411 |
| Brochure model | DE410 (91 L) |
| Type | High-temperature forced-convection clean oven (Class 100 during stability) |
| Operating temperature | Room temp. +30 °C to 260 °C |
| Temperature stability | ±0.3 °C (at 260 °C) |
| Temperature uniformity | ±2.5 °C (at 260 °C) |
| Cleanliness | Class 100 during temperature stability |
| Time to reach max. temp. | About 70 min (to 260 °C) |
| Capacity | 91 L |
| Internal dimensions (W×D×H) | 450 × 450 × 450 mm |
| External dimensions (W×D×H) | 700 × 1000 × 1765 mm |
| Heater | Stainless pipe heater, 2.5 kW nominal |
| Fan motor | Sirocco fan, condenser-type motor, 400 W |
| Filter | Heat-resistant HEPA (>99.97% for 0.3 µm particles) |
| Insulation | Glass wool |
| Power supply | AC200V three-phase, 8.3A, 50/60 Hz (US nominal 220V) |
| Weight | Approx. 220 kg |
| Shelves | 2 stainless-wire shelf boards (load endurance approx. 30 kg/piece); 12 shelf-holder steps at 30 mm |
| Controller | PID by microprocessor; K-thermocouple double sensor; green LED display |
Application Profile
The 91 L DE-411 targets particle-sensitive dry-heat processing to 260 °C. It handles clean drying and baking of electronic, optical, and precision components that require a low-particle environment, and clean curing of coatings and adhesives on parts where airborne contamination must be minimized. In semiconductor and device processing it performs dehydration bakes and post-process drying under Class 100 conditions, and more broadly serves contamination-controlled conditioning of materials that need both a defined thermal soak and clean process air — with up to 16-segment programmed thermal profiles (slope and repeat) governing the cycle.
The heat-resistant HEPA filter delivers Class 100 cleanliness during temperature stability — the defining reason to select a clean oven over a standard forced-convection oven for particle-sensitive work. (See laboratory-oven-selection.)
Design Architecture
The DE-411 uses forced convection driven by a 400 W sirocco fan through a heat-resistant HEPA filter (>99.97% at 0.3 µm), with a 2.5 kW stainless pipe heater and glass-wool insulation. Temperature is governed by microprocessor PID control reading a K-thermocouple double sensor, with a green LED display, 16-segment program operation (slope/repeat), calendar timer, integrating-hours counter (to 49,999 h), and calibration offset. A front analog differential-pressure gauge (0–500 Pa) monitors filter loading, and a manual exhaust damper controls venting; a 32.9 mm cable port is provided at the upper right.
Safety includes an earth-leakage breaker with over-current protection, an independent temperature overheat-prevention device, a door switch, a key-lock function, and self-diagnostics for sensor abnormality, heater disconnection, triac short circuit, and automatic over-rise prevention. This model runs on AC200V three-phase, 8.3 A service (US nominal 220 V); the three-phase 200 V connection must be made to a suitable outlet or distribution board.
Frequently Asked Questions
What temperature does the DE-411 reach? The DE-411 operates from room temperature +30 °C to 260 °C, reaching maximum temperature in about 70 minutes, with ±0.3 °C stability and ±2.5 °C uniformity at 260 °C.
What makes the DE-411 a "clean" oven? A heat-resistant HEPA filter (>99.97% for 0.3 µm particles) maintains Class 100 cleanliness during temperature stability — the defining reason to choose it over a standard forced-convection oven for particle-sensitive work.
What power supply does the DE-411 require? It runs on AC200V three-phase, 8.3A, 50/60 Hz service (US nominal 220V); the three-phase connection must be made to a suitable outlet or distribution board.
How large is the DE-411 and its chamber? Chamber capacity is 91 L (450 × 450 × 450 mm interior); external dimensions are 700 × 1000 × 1765 mm and it weighs approximately 220 kg. It ships with 2 stainless-wire shelf boards.
Can the DE-411 run programmed temperature profiles? Yes. Microprocessor PID control supports up to 16-segment program operation with slope and repeat, plus a calendar timer and integrating-hours counter.
Ordering & Configuration
Standard delivery includes the oven, 2 stainless-wire shelf boards (approx. 30 kg/piece load endurance), and the instruction manual. A broad options list is available: temperature-output / time-up / external-alarm terminals, auto-damper, digital printer, analog recorder, external communication adapter, additional (triple) sensor, N2 induction device, abnormal-alarm lamp display, emergency-stop switch, extra shelf boards, and restart-mode select.
Options (printers, recorders, terminals, auto-damper, extra sensors, and shelving) are selected per workflow, and lead time and warranty follow Yamato standard capital-equipment terms. Confirm at quote:
- Voltage and connection — AC200V three-phase, 8.3 A; confirm your three-phase service and distribution board.
- Cleanliness and application — confirm the Class 100 requirement and process (drying, curing, baking) and target ≤ 260 °C profile.
- Floor footprint and access — 700 × 1000 × 1765 mm external, ~220 kg; confirm floor space, door swing, and rigging.
Request a quote to configure the DE-411 clean oven for your particle-sensitive thermal process.
DE/DT clean-oven series: DE410 (91 L, 260 °C, this unit) → DE610 (216 L, 260 °C) → DT410 (91 L, 360 °C) → DT610 (216 L, 360 °C). DE models use glass-wool insulation to 260 °C; DT models use ceramic-fiber insulation to 360 °C. All are AC200V three-phase Class 100 clean ovens.
