Simulate the perfect atmosphere for climate and temperature tests; specifically in accordance with DIN EN 60068-2-1; 2-2 and 2-3. Provide unlimited flexibility for controlled material and function tests as well as ageing tests. Standard Equipment: Ventilation and Control: High-performance air fan in working chamber. Depending on operation status automatically variable fan speed with manual adjustment from 10% to 100%. Adaptive; fuzzy-supported multifunctional digital microprocessor PID-controller. Autodiagnostic system with fault indication on temperature and humidity control. 2 x Class A; 4-wire circuit; Pt100 sensors; mutually monitoring and maintaining performance at the same temperature value. Digital 7-day-programme-timer with real time clock; precise minute setting. Integral timer for heating profiles of up to 40 ramps; each segment adjustable from 1 min. up to 999 hours. Digital display (LED) of all set parameters; such as temperature; weekdays; time; humidity and set-up values - language to be chosen in setup. Digital display of set values (resolution: 0.1°C below 99.9°C; 0.5°C above 100°C) and actual values (resolution: 0.1°C) of temperature (LED). Long-term documenting (ring store) of all relevant data; GLP-conforming as data logger - 1024 kB. Programme stored on power failure. Parallel printer interface (incl. real-time clock with date function) for all PCL3-compatible ink-jet printers for GLP-conforming documentation. USB interface including Memmert Celsius software for programming and documentation. Chip card control incl. one MEMoryCard XL with 32 kB (up to 40 ramps). Incl. works calibration certificate for -20°C and +160°C. Heating concept: High-performance ring heaters with optimised air circulation. Door heating to avoid condensate. Cooling Concept: Twin compressor. Speed adjustable condenser fan. Refrigerant R404A . Multiple Overtemperature Protection: With audible and visual alarm in case of over-/undertemperature and over-/under-humidity; open door and empty water tank. Independently working; digitally adjustable electronic overtemperature controller; TWW protection class 3.3. Additional adjustable Auto-Safety-Function ASF for over- and undertemperature automatically following the set value at a preset tolerance range. Mechanical temperature limiter TB class 1 switching the heating off at approx.10°C above max. oven temperature. Temperature Range: CTC: without humidity control: from -42°C up to +190°C. CTC: with humidity control: from +10°C up to +95°C. Power supply 400 V; 3ph; N; 50 Hz. Electronically controlled active humidification and dehumidification from 10% to 98% rh with digital display of the relative humidity; display resolution 0;5%; setting accuracy 1%. incl. works calibration certificate for +30°C at 60% rh. Humidity supply with distilled water from 2 x 10 l tanks on integrated telescopic slide; with automatic water tank change-over. 2 x 10L tanks acting as condensate collectors; on telescopic slide mounts.