For sterilisation procedures that have to meet high standards of thermal safety, the Excellent class is recommended, extensively equipped for programming and documentation. A multifunctional, fuzzy-supported PID process controller, with permanent performance adjustments and integrated self-diagnosis system, ensures absolutely reliable temperature control and the highest process safety.  The setpoint-dependent sterilisation function Setpoint Wait absolutely guarantees precise and exactly timed sterilisation procedures (see graphic).

• 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 adjusted at 10% intervals
• 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