Direct heating of the thermoshelves
Heating concept in the Memmert vacuum oven: Good heat transfer, very short heating-up times and very high control accuracy.
Documentation
Quality included: Long-term log memory, Celsius remote control and logging software, interfaces for programming, storage and printout, as well as a MEMory Card for programming and documentation.
The control technology for the Memmert vacuum drying oven VO is based on the Perfect class, but adjusted to the particular conditions in the vacuum: Multi-level controlling (MLC) and multi-level sensing (MLS) guarantee precision and safety on all levels, for heat treatment and drying of PCBs, food or cosmetics. A multifunctional fuzzy controller (P class), with permanent performance adjustments and integrated self-diagnosis system, as well as separate high-quality platinum temperature sensors Pt100 for each thermoshelf, ensure absolutely reliable temperature control and the highest process safety and control accuracy.
- Temperature range: 20 °C to 200 °C with a display accuracy of 0.1 °C
- MLC: Separate temperature control for each thermoshelf to a shared and predefined set temperature
- MLS: High-quality platinum temperature sensors Pt 100 in a 4-wire circuit (for stable long-term transmission of measurement signals), separate for each thermoshelf
- Vacuum pressure control for digital adjustment through integrated solenoid valves
- Signal for pump purging and switching off external vacuum pump
- Programmable inlet valve for fresh air and inert gas
- Multiple overtemperature protection: An adjustable overtemperature controller TWW protection class 3.1 takes over control at a preset temperature in case of failure. ASF Automatic Safety Function - a unique safety function - for over- and undertemperature automatically following the setpoint in a freely selectable tolerance range. MLOP Multi Level Overtemperature Protection for each thermoshelf individually, switches heating of invididual shelf off at about 3°C above setpoint. In addition a mechanical temperature limiter, TB, switches off heating permanently if the maximum permitted oven temperature is exceeded by approx. 20 °C.
- Adjustable undertemperature alarm
- Digital programme control (programmable to the minute) for temperature and pressure profiles consisting of up to 40 ramps
- Weekly timer programmable to the minute
- Simultaneous display of all parameters, such as temperature, pressure, weekday, time and number of ramps
- Visual and acoustic alarm in case of over-/undertemperature
- Alphanumeric text display in different languages (D/UK/E/F/I)
- Function signals for stand-by, operating mode, heating and over/undertemperature
- Internal log memory with 1024kB to save temperature, pressure and error states, with timestamp to the minute
- Chip card control including 1 MEMoryCard XL with 32 kB memory capacity (max. 40 ramps)
- Serial USB-interface and software Celsius to read out the appliance's internal log memory
- Parallel printer interface for printout of log data via an external PCL3-compatible inkjet printer (USB available via converter)
Climatic test chamber CTC
Fast, precise and energy-saving temperature changes as well as short humidity recovery times for controlled material and function tests, climate tests, temperature tests or ageing tests.
Memmert Universal Oven U
The all-rounder among thermal ovens and drying ovens! With 9 model sizes, 3 controller classes and natural or forced circulation, you can choose from 35 models.
Application PCBs
The German Electrical and Electronic Manufacturers’ Association (ZVEI) recommends: Drying PCBs in a vacuum oven reduces drying times and saves energy.
Environmental technology
Reduced drying time in the vacuum drying oven optimises operating procedures in waste management.
