DNF Series – Energy Saving & Air Velocity Controllable Oven

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DNF301 / DNF411 / DNF611 / DNF811 / DNF911

Laboratory Oven is essential for general heating routines from drying food samples to curing microchips.  Lab Oven is one of the fundamental instruments every laboratory should have.

DNF Series is a High-performance,  energy-saving,  programmable constant temperature, forced convection oven with air velocity control and exhaust dampers.  The first 2 in 1 system in the industry!

Two types of circulation, forced and natural convection, in one unit (compatible with model 300/400/600).
Eco-oven with improved air velocity control system and adjustable damper.
Program featured to reduce power consumption significantly.
Superior heat tightness and insulation of chamber.
Excellent dust tightness, dust can hardly enter the chamber.
Air velocity changeable in 10 stages using digital setting of controller.
Standard with 99 step program operation with repeat operation, auto start, auto stop and quick auto stop functions.
Adjustable damper position at chamber front to optimize operation.
Fluorescent display, interactive input method, calibration off-set function.

  • - Pharmaceutical Industry
  • - Microbiological Culture Research
  • - Cell Culture Research
  • - Industrial Products
Technical specifications
Forced convection + Natural convection
Forced convection
External temp. range
Temperature set range
0~130°C (Wind velocity: 0), 0~270°C (Wind velocity: 1~10)
0~270°C (Wind velocity: 1~10)
Temperature control range
Room t. +25~120°C (Wind velocity: 0), Room t. +15~260°C (Wind velocity: 1~10)
Room t. +15~260°C (Wind velocity: 1~10)
Temp. control accuracy *¹
Forced con.
±0.3°C (at 260°C)
Natural con.
±0.5°C (at 120°C)
±0.3°C (at 120°C)
Not applicable
Temp. fluctuation *¹
Forced con.
±0.5°C (at 260°C)
Natural con.
±1.0°C (at 120°C)
±0.8°C (at 120°C)
±0.6°C (at 120°C)
Not applicable
Temp. distribution precision *¹
Forced con.
±2.5°C (at 260°C)
Natural con.
±5°C (at 120°C)
±3°C (at 120°C)
Not applicable
Temp. gradient *¹
Forced con.
5°C (at 260°C)
7°C (at 260°C)
8°C (at 260°C)
12°C (at 260°C)
6°C (at 260°C)
Natural con.
15°C (at 120°C)
13°C (at 120°C)
Not applicable
Temp. rise time *¹
Forced con.
Natural con.
Not applicable
Temperature distribution accuracy
±2.5°C (at 210°C)
Maximum temperature reaching time
~90 min.
~90 min.
~90 min.
~60 min.
~60 min.
Stainless steel
Cold rolled steel plate with melamine resin baking finish
Exhaust port
Outer diameter: 50mm×1 (back side)
50mm×2 (back side)
Inlet port
Inner diameter: 33mm×1  (right side)
33mm×2 (both side)
Cable hole
Inner diameter: 33mm×1  (right side)
Steinless steel 0.8kW
Steinless steel 0.6kWx2
Steinless steel 0.83kWx2
Steinless steel 1.35kWx2
Steinless steel 1.65kWx2
Heat insulation material
Glass wool
Heater Circuit Control
Triac with Zero-cross Control
Fan Type / Fan Motor
Scirocco fan, Condenser type motor 10W
Wind velocity adjusting system
10 steps (600~1500rpm) + Wind velocity (0)
10 steps (600~1500rpm)
Circulation-Ventilation   Manual switching: Interlocked intake and  exhaust system (Complete exhaust applicable / Unable to reach 260°C with  damper fully open)
K type Thermocouple double sensor (for temperature control and independent overheat prevention device)
Model V type
Temperature control
PID Z control
Temperature setting
Digital setting with ▲▼ keys
Temperature display
Temperature reading display: green 4-digit digital LED/Temperature setting display: orange 5-digit digital LED
Other indications
LED indicates temperature patterns for heating/stabilizing/cooling
Operation function
Fixed temperature operation, Program operation (maximum 99 steps or 99  patterns, with repeat operation function), Timer or clock operation  function (Fixed temperature operation w/ auto start/auto stop/quick auto  stop, program operation auto start)
Additional functions
Variable Air Flow Function, Power-on Time and Operation Time  Accumulation Monitor (up to 65,535 hours); Calibration Offset;  Monitoring Display for Accumulated Power Consumption, Total CO 2   Emissions, and Heater Operation Output; Power Recovery Mode; Setting  Data Backup and Recovery
Control board
Self-diagnostic Functions (Detection for Temp. Sensor Failure, TRIAC  Short Circuit, Automatic overheating prevention, Heater Line Disconnect,  Main Relay Contact Damage ), Earth leakage breaker, Fan Motor Failure,  Key Lock Function, Independent overheating prevention device
Earth leakage breaker
Leak Current/Short Circuit/Over-current Protection, Rated Current Sensitivity 30mA
Single swing (left side)
Double doors (opening from center)
Door switch
Door open: fan motor and heater circuit OFF, Door close: fan motor and heater circuit ON
Internal dimensions WxDxH
300×300×300 mm
450×450×450 mm
600×500×500 mm
600×500×1000 mm
1090×500×1000 mm
External dimensions WxDxH
430×495×740 mm
580×645×890 mm
730×695×940 mm
730×695×1685 mm
1220×695×1685 mm
Internal capacity
Shelf load capacity
~15 kg/pc.
Shelf rest step number / pitch
6 steps / 30mm
11 steps / 30mm
13 steps / 30mm
29 steps / 30mm
Power supply (50/60 Hz)
4,5A (no plug, round terminal)
6A (no plug, round terminal)
8A (no plug, round terminal)
15,5A (no plug, round terminal)
18,5A (no plug, round terminal)
Shelfs and Brackets (stainless)
2 pcs. / 4 pcs.
4 pcs. / 8 pcs.
8 pcs. / 16 pcs.

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