Technologies applied

Documentation
Quality included: data logger, Remote control and logging software, interfaces for programming, storage and printing, as well as a MEMory Card for programming and documentation.

All-round surface heating
Optimum temperature distribution is just one of many advantages of the unique Memmert heating concept.

Control Technology Steriliser Excellent

 
Temperature progress and monitoring devices

Temperature control, programming and documentation

If hot air sterilisation in medicine and pharmaceutics has to meet high standards of thermal safety, the Excellent class of the Memmert hot-air steriliser S is recommended, extensively equipped for programming and documentation. The setpoint-dependent sterilisation function Setpoint Wait guarantees precise and exactly timed sterilisation (see graphic). A multifunctional fuzzy controller, with permanent performance adjustments and integrated self-diagnosis system, as well as two high-quality platinum temperature sensors Pt100, ensure absolutely reliable temperature control and the highest process safety and control accuracy.

Technical specifications

  • Temperature range: 30 °C (at least 5 °C or 10 °C above ambient) to 250 °C
  • Temperature variation (time): < ±0.25 °C at 150 °C
  • Triple overtemperature protection: If the electronic heating control should fail, heating is switched off at a fixed level of 10 °C above the setpoint. An adjustable overtemperature controller TWW protection class 3.1 (optional adjustable electronic temperature limiter TWB protection class 2) takes over control at a preset temperature in case of failure. In addition a mechanical temperature limiter, TB, switches off heating permanently if the maximum permitted oven temperature is exceeded by approx. 10 °C.
  • 2 high-grade platinum temperature sensors Pt 100 in a 4-wire circuit (for stable long-term transmission of measurement signals) with mutual sensor monitoring and operation transfer at same working temperature
  • Programmable digital timer (1 min. to 999 hrs) and weekly programmer for temperature control profile with a maximum of 4 segments: Switch on with time delay, heat up, hold set temperature (dependent on setpoint, if required) and defined cooling down
  • Loop (repeat function)
  • Manually adjustable air flap for fresh air intake
  • Speed of fan can be controlled at 10% intervals, or shut down
  • Simultaneous display of all temperature, weekday, time, speed and ramp segment information
  • Visual alarm if temperature is exceeded
  • Function signals for stand-by, operating mode, heating and overtemperature
  • Internal log memory with 1024kB to save temperature and error states, with timestamp to the minute
  • Serial RS-232 communication interface (option: USB) and software Celsius to control the appliance and to read out the appliance's internal log memory