Memmert VO49, Laboratory and Industrial Vacuum Oven, 49L

The Memmert VO49 is a high-precision vacuum drying oven engineered for gentle, residue-free drying of heat-sensitive and oxygen-sensitive materials in laboratories and industry. With programmable vacuum cycles, direct-contact shelf heating, and advanced TwinDISPLAY technology, this 49-liter model guarantees rapid, oxidation-free drying up to +200 °C at pressures down to 5 mbar (with suitable pump), making it the preferred choice for pharmaceuticals, electronics, aerospace, and advanced materials research.

• Product Type: Laboratory and industrial vacuum drying oven
• Volume: 49 liters
• Temperature Range: +5 °C above ambient to +200 °C
• Vacuum Range: 5 – 1100 mbar (digital pressure control)
• Display/Controller: TwinDISPLAY adaptive touchscreen
• Drying Method: Direct thermal transfer via heated shelves

General Specifications

• Product Type: Laboratory and industrial vacuum drying oven
• Model: VO49 (TwinDISPLAY)
• Working Temperature Range: At least 5 °C above ambient to +200 °C
• Setting Temperature Range: +20 °C to +200 °C
• Setting Accuracy: 0.5 °C
• Volume: 49 liters

Dimensions and Weight

• Interior Dimensions (W × H × D): 385 mm × 385 mm × 330 mm
• Exterior Dimensions (W × H × D): 550 mm × 687 mm × 480 mm (body only)
• Overall Height when fully assembled (incl. control unit & vacuum connection): 1650 mm
• Net Weight: Approx. 83 kg
• Max. Loading per Shelf: 20 kg
• Max. Loading of Chamber: 60 kg
• Max no . Thermo-Shelves: 2 (1 Included)

Materials and Construction

• Interior Material: Stainless steel 1.4404 (AISI 316L) – highly corrosion resistant
• Thermo-Shelves: Anodised aluminium with direct-contact heating
• Housing Material: Textured stainless steel
• Door: Tempered safety glass inner door + outer stainless-steel door with vacuum-tight silicone seal

Pressure / Vacuum Attributes

• Achievable Vacuum: 5 – 1100 mbar (with suitable vacuum pump)
• Pressure Control: Digital, electronically controlled via solenoid valve
• Pressure Setting Accuracy: 1 mbar
• Pressure Display: Real-time on TwinDISPLAY (mbar or hPa)
• Vacuum Programming: Multi-stage ramp & dwell programmes (up to 40 ramps)
• Inert Gas Inlet: DN16 flange with automatic valve (optional)
• Vacuum Connection: DN16 small flange on rear panel
• Recommended Pumps: Memmert chemical-resistant pumps or standard rotary vane pumps

Temperature Control and Monitoring

• Temperature Sensors: 2 × Pt100 DIN class A in 4-wire-circuit (mutual monitoring)
• Control Technology: TwinDISPLAY PID-microprocessor with graphical interface
• Functions: SetpointWAIT, AtmoCONTROL software, USB/Ethernet logging
• Timer: 1 min to 99 days 23 h, weekly programmer

Safety Features

• Overtemperature: Adjustable electronic monitor + mechanical limiter (TWB Class 2)
• Vacuum Safety: Door lock interlock, overpressure safety valve
• Alarm: Visual + acoustic for temperature, vacuum, and door status

Electrical Data

• Voltage: Electrical load (maximally equipped) at 230 V, 50/60 Hz
• Power Consumption: 2000 W
• Standards Compliance: CE, DIN 12880 Part 2 (vacuum ovens)

Applications

• Primary Uses: Pharmaceutical granulate drying, battery electrode drying, solvent removal, aerospace composites, electronics drying, oxidation-free heat treatment