Memmert, UN450, Laboratory and Industrial Oven, Natural Convection, 449L

The Memmert UN450 is a high-capacity universal oven with natural convection, engineered for precise drying, heating, ageing, burn-in, and sterilisation processes in laboratories and industry. Featuring Memmert’s advanced TwinDISPLAY ControlCOCKPIT, robust stainless steel construction, and exceptional temperature uniformity, this 449-liter model provides gentle, fan-free airflow for temperature-sensitive materials up to +300°C.

• Product Type: Universal laboratory and industrial oven with natural convection
• Volume: 449 liters
• Temperature Range: +5°C above ambient to +300°C
• Setting Accuracy: 0.1°C up to 99.9°C, 0.5°C from 100°C
• Convection Type: Natural convection (fan-free)
• Display/Controller: TwinDISPLAY adaptive touchscreen
• Uniformity: Extremely low spatial temperature deviation

General Specifications

• Product Type: Universal laboratory and industrial oven with natural convection
• Model: UN450 (TwinDISPLAY)
• Working Temperature Range: At least 5°C above ambient to +300°C
• Setting Temperature Range: +20°C to +300°C
• Setting Accuracy: 0.1°C up to 99.9°C / 0.5°C from 100°C
• Volume: 449 liters

Dimensions and Weight

• Interior Dimensions (W x H x D): 1040 mm x 720 mm x 600 mm
• Exterior Dimensions (W x H x D): 1224 mm x 1247 mm x 784 mm (plus door handle and connections)
• Net Weight: Approx. 161 kg
• Max. Loading per Shelf: 30 kg
• Max. Loading of Chamber: 300 kg
• Max. Number of Shelves: 8

Materials and Construction

• Interior Material: Stainless steel, material 1.4301 (ASTM 304), with integrated large-area heating on four sides
• Housing Material: Textured stainless steel, rear zinc-plated steel
• Door: Fully insulated stainless steel door with 2-point locking and inner glass door

Temperature Control and Monitoring

• Temperature Sensors: 2 Pt100 sensors DIN class A in 4-wire-circuit for mutual monitoring
• Control Technology: TwinDISPLAY adaptive multifunctional digital PID-microprocessor controller
• Display: High-definition TFT-color touchscreen with graphical interface
• Functions: SetpointWAIT, adjustable parameters, AtmoCONTROL software support
• Timer: Digital backwards counter with target time setting (1 min to 99 days)

Ventilation and Airflow

• Convection Type: Natural convection (no fan)
• Fresh Air: Electronically adjustable air flap
• Exhaust: Ø 50 mm exhaust duct with restrictor flap

Safety Features

• Overtemperature Protection: Adjustable electronic overtemperature monitor (TWW) and mechanical temperature limiter (TWB Class 2)
• Auto-Safety: Integrated automatic safety functions
• Alarm: Visual and acoustic alarms for temperature deviations and door open

Electrical Data

• Voltage Options: 400 V and 3x 230 V w/o neutral, 50/60 Hz (approx. 5800 W)
• Standards Compliance: CE, EAC Eurasian Conformity

Applications

• Primary Uses: Drying, sterilisation, ageing, burn-in tests, materials testing, pharmaceutics, quality assurance, electronics, food technology