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Memmert - VO Series

Manufactured by  Memmert
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Vacuum drying oven - the gentle giant in the laboratory

With short warming up times, high-precision temperature control and turbo-drying, the vacuum oven VO shows off all its strength – at the same time it can handle heat-sensitive or oxygen-sensitive substances and materials such as cosmetics, food, clocks, books or PCBs and other electronic components with unparalleled gentleness when drying. The direct contact between chamber load and the heatable and removable thermal shelves guarantees in all models a quick and even temperature control without loss of heat.

  1. Temperature range up to +200°C
  2. 3 model sizes (29l, 49l and 1011)
  3. State-of-the-art control technology based on the P performance class for all models
  4. Anti-splinter; VDE-tested door construction for all models

Considerably shorter heating and processing times
Each of the maximum up to four aluminium thermoshelves that can be inserted as required is equipped with a separate shelf heating and its own sensors. The separate control circuits react precisely to different loads and humidities, and maintain all the levels used equally to the setpoint temperature. Because of the direct contact between heating and chamber load, the heating and operating times are reduced by some 75 per cent compared to a conventional drying oven.

To achieve an optimum temperature distribution on all separately heated levels in the chamber, the thermoshelves for our vacuum drying oven are made of anodised and surface-enhanced aluminium as standard. For applications with highly corrosive materials we optionally recommend that you choose stainless steel thermoshelves from our accessories list, because of their resistance to chemicals.

Your advantages with aluminium thermoshelves at a glance

  1. Greater usable surface
  2. Optimised temperature distribution
  3. With no extra charge for standard delivery
  4. Optional: thermoshelves made of stainless steel can be chosen at no extra charge

Stainless steel - a vacuum oven (almost) forever
60 years of permanent development work, as well as numerous amounts of feedback from practical experience, are embodied in each of our appliances:

  1. The modular manufacturing concept in accordance with the principle of equal parts enables a highly varied and cost-effective production
  2. Almost exclusive use of high-quality, corrosion-resistant and easily cleanable stainless steel for the working chamber and housing
  3. Heating concept adapted to the specific product for a precise and homogenous temperature control independent of chamber volume and load
  4. A wide range of options for programming and documentation using interfaces, Celsius software, integrated log memory and chip cards (features dependent on the controller class)
  5. Two-year guarantee for appliances sold outside Germany
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No heating in Mermmert Vac Oven model VO500.

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No heating in Mermmert Vac Oven model VO500.
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Features of VO Series

Control

  • Fuzzy-supported MLC (Multi-Level-Controlling) microprocessor controller adapting its performance to the volume (local temperature sensing) for each thermoshelf
  • Temperature measured through 4-wire Pt100 indFividually for each thermoshelf
  • Autodiagnostic system with fault indication
  • Digital 7-day-programme-timer with real time clock, precise minute setting, for one set value or start of ramp operation
  • Integrated timer for tempering and pressure (vacuum) profiles of up to 40 ramps, each segment adjustable from 1 min up to 999 hours
  • Multifunctional programming via menu on 8-digit alphanumeric digital display (language to be chosen via set-up)
  • Digital display (LED) of all set parameters, such as temperature, weekdays, time, pressure, programme status and set-up values
  • Separate LED symbol for each thermoshelf in operation
  • Actual temperature of each thermoshelf to be made visible separately on digital display
  • Resolution of display for set value 0,1 °C below 99,9 °C, 0,5 °C above 100 °C; for actual value 0,1 °C
  • Long-term logging (ring store) of all relevant data, GLP-conforming as data logger - 1024 kB
  • Parallel printer interface (incl. real-time clock with date function) for printing logging files, suitable all PCL3-compatible ink-jet printers (USB available via converter, see accessories)
  • USB interface including MEMMERT Software "Celsius" for control and documentation of temperature and pressure
  • Chip card control incl. one MEMoryCard XL with 32 kB (up to 40 ramps)

Vacuum control

  • Digital electronic vacuum control through solenoid valves
  • Adjustment range from 10 to 1100 mbar digital (LED)
  • Resolution 1 mbar
  • Digital display of actual pressure from 5 mbar up to 1100 mbar
  • Two programmable, digitally controlled connections for air and inert gas
  • Rapid air intake for door opening (door blocked under vacuum) - programme reactivation at stored values
  • Vacuum drying process (vacuum cycles) is being continued after power failure
  • Signal for Memmert pump module (ON, OFF/purging)
  • Works calibration certificate for +160 °C at 50 mbar pressure for each thermoshelf supplied with vacuum oven

Multiple overtemperature protection

  • With audible and visual alarm
  • Digitally adjustable, electronic microprocessor overtemperature controller TWW maximum value for overtemperature, minimum value for undertemperature
  • Additional integral over- and undertemperature monitor "ASF" (Auto-Safety-Function) automatically following the setpoint value at a preset tolerance range; audible alarm is activated in case of over- or undertemperature, heating of the individual shelf is switched off in case of over- temperature
  • Resolution of display and setting accuracy: 0,5 °C below 99,9 °C, 1 °C above 100 °C
  • Automatic overtemperature protection for each thermoshelf separately (MLOP-Multi-Level-Overtemperature Protection) switching the heating off at approx. 3 °C above set temperature
  • Mechanical temperature limiter TB protection class 1 switching the heating off at approx. 20 °C above max. oven temperature

Textured stainless steel casing

  • Full-sight glass door, on the inside a spring-loaded 15 mm thick glazed panel in safety glass with anti-splitter screen on the outside
  • Rear zinc-plated steel

Interior - heating concept

  • Hermetically welded stainless steel interior of extremely corrosion-resistant, electropolished stainless steel, material no. 1.4404 (ASTM 316 L)
  • Additional interior mountings of stainless steel material no. 1.4404 (ASTM 316 L) removable for cleaning, consisting of mounting at the sides with guide bars for thermoshelves, on top (diffusor) as well as a drip tray
  • All tubings made of stainless steel material no. 1.4571 (ASTM 316 Ti)
  • Plug connections for thermoshelves at the rear
  • Thermoshelves of aluminium material with integrated large-area heating

Temperature range

  • From +20 °C up to +200 °C
  • Temperature variation in time: < +/-0,3 °C (to DIN 12 880: 2007-05)
  • Temperature uniformity (surface) at 160°C / 50 mbar: < +/- 5 °C
General Specifications

There are no General Specifications available.

Additional Specifications

Shelves: 1 thermoshelf of aluminium material no. 3.3547 (ASTM B209)
Temperature variation in time: < +/-0,3 °C (to DIN 12 880: 2007-05)
Temperature uniformity (surface) at 160°C / 50 mbar: < +/- 5 °C
Pump module net weight:
With pump app.: 57.3 lbs
Without pump app.: 88.2 lbs
Pump module gross weight:
With pump app.: 70.5 lbs
Without pump app.: 101.4 lbs

Series Modals

Memmert - VO 200

[+] View Model Specifications

Memmert - VO 400

[+] View Model Specifications

Memmert - VO 500

[+] View Model Specifications

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