The DKV-400 is the 90-liter, 115V entry point of Yamato's programmable DKV forced-convection oven family — the premium tier above the economical DKL line, adding a VSD-1 controller with a highly visible 3.5-inch color LCD, multi-step program operation, and full communication/output terminals. A forced-convection airflow delivers tight ±0.6°C temperature fluctuation and a 9°C temperature gradient (per brochure test conditions), the uniformity that separates forced from natural/gravity convection for demanding, repeatable thermal processing. This is the 115V half of the 90L 400/410 pair.
Key Specifications
| SKU | DKV-400 |
| Circulation | Forced convection |
| Operating temp. range | Room temp. +10°C to 260°C *(brochure header/test reference cites 270°C — see notes)* |
| Temp. fluctuation | ±0.6°C (at 270°C, per brochure) |
| Temp. gradient | 9°C (at 270°C, per brochure) |
| Temp. rise rate / time | 3.3°C/min / ~75 min |
| Internal capacity | 90 L |
| Internal dimensions (W×D×H) | 450 × 450 × 450 mm |
| External dimensions (W×D×H) | 580 × 635 × 830 mm |
| Heater | SUS tube heater, 1.5 kW |
| Voltage / current | 115V, 13.5A, 50/60Hz (with plug) |
| Weight | ~60 kg |
| Shelves / pitch | 11 steps / 30 mm; 1 shelf plate + 2 brackets included |
| Chamber load | ~15 kg/shelf; ~30 kg total |
| Controller | VSD-1, 3.5-inch color LCD |
Application Profile
The DKV-400 suits method-driven thermal processing where a fixed setpoint isn't enough: multi-step drying and curing profiles, timed ramp-and-hold cycles, overnight/timed auto-start runs, and processes needing data output or alarm supervision. Typical uses include coating and adhesive cure schedules, controlled drying, annealing of samples, and reproducible protocol execution up to 260°C. The 90L chamber fits general single-instrument benches. Forced convection with programmable control is the right choice when both uniformity and process repeatability are required.
Design Architecture
Air is driven through a stainless-steel chamber inside a chromium-free electrogalvanized steel, baked-on-finish exterior. A 1.5 kW SUS tube heater is governed by PID control from a microcomputer via the VSD-1 controller with a 3.5-inch color LCD, reading a K-thermocouple. Operation modes: Fixed temperature, Quick Auto-Stop, Auto-Stop, Auto-Start, Programmed Auto-Start, and Program operation, with a timer spanning 1 minute to 99 h 59 min. Additional functions include calibration offset, power-failure return mode, timer-wait, security management, upper/lower temperature-limit alarms, fan-OFF delay, program preview, and operation-trend display. Output/communication terminals: RS-485 (external comm), 4–20 mA temperature output, time-up output, error output, and recorder terminal. Door hinges click at 30° and 120° for safe sample handling. One 33 mm I.D. cable port (right) and two 33 mm I.D. exhaust ports (top) are standard.
Safety: extensive self-diagnostics (automatic over-temperature protection, sensor error, SSR short, heater disconnection, fan error, clock/relay/memory/comm errors), an independent overheat-prevention device, door switch/door alarm, and an overcurrent leakage breaker. Never use in flammable/explosive atmospheres or with flammable materials.
Frequently Asked Questions
What temperature range and uniformity does the DKV-400 deliver? Room temperature +10°C to 260°C, with ±0.6°C temperature fluctuation and a 9°C gradient (per brochure test conditions), reaching setpoint at about 3.3°C/min (~75 min).
Is the DKV-400 programmable? Yes. It uses the premium VSD-1 controller with a 3.5-inch color LCD, offering Fixed temperature, Quick Auto-Stop, Auto-Stop, Auto-Start, Programmed Auto-Start, and full Program (ramp/soak) operation.
What voltage is it and how much current does it draw? The DKV-400 is 115V, 13.5A, 50/60Hz and ships with a plug. The 220V sister is the DKV-410 (no plug, round terminal).
How large is it and how much can it hold? 90 L internal (450 × 450 × 450 mm), with 11 shelf steps at 30 mm pitch; each shelf carries ~15 kg, up to ~30 kg total. One shelf plate and two brackets are included.
How does the DKV differ from the DKL series? The DKV is the programmable premium family with the VSD-1 color-LCD controller, ramp/soak profiles, and communication/output terminals. For a lower-cost fixed-temperature oven without programming, choose the DKL series.
Ordering & Configuration
Ships with the chassis, 1 stainless-steel perforated shelf plate + 2 brackets, and standard cable/exhaust ports. Optional items (ordered separately): stand OA117/281355 (no casters), stacking kit OA196/281598, extra shelf-and-bracket set 212246, sheath sensor ODT48/212946, silicone stopper ODT52/212947, rubber feet OA198/281634, alternate cable ports (25 mm/281454, 50 mm/281455), and seismic isolation mat 296902.
Confirm at quote: this is the 115V, with-plug unit (choose DKV-410 for 220V); confirm capacity fit (90L vs 150L/600 vs 300L/810 vs 535L/910), stand/stacking configuration, communication/recorder needs, cable-port spec, and lead time. Warranty per Yamato standard capital-equipment terms.
DKV programmable forced-convection family (VSD-1 color LCD, ramp/soak):
- DKV-400 / -410 — 90L (this product is the 115V 400)
- DKV-600 / -610 — 150L
- DKV-810 — 300L (single-phase 220V)
- DKV-910 — 535L (single-phase 220V, 220°C max)
For a lower-cost fixed-temperature oven without programming, see the DKL series.
