Memmert Model UNB 500.
30 °C to 220 °C.
w x h x d: 710 x 760 x 550 mm For standard temperature control applications with insensitive load, the Basic class is recommended. An electronic PID controller with an integrated self-diagnosis system ensures reliable and exact temperature control. - Temperature range: 30 °C (at least 5°C or 10°C above ambient) to 220 °C
- Temperature variation (time): < ±0.5 °C at 150 °C
- Double overtemperature protection: If the electronic heating control should fail, heating is switched off at a fixed level of 10 °C above the setpoint. In addition a mechanical temperature limiter, TB, switches off heating permanently if the maximum permitted oven temperature is exceeded by approx. 10 °C.
- A high-quality platinum temperature sensor Pt100 (DIN class A) in a 4-wire circuit (for stable long-term transmission of measurement signals)
- Programmable digital timer (1 min. to 99 hrs 59 min.)
Manually adjustable air flap for fresh air intake - Visual alarm if temperature is exceeded
- Function signals for stand-by, operating mode, heating and overtemperature
Standard equipment - Ventilation and Control
- natural convection
- continuous adjustment of pre-heated fresh air admixture
- vent connection with restrictor flap
- microprocessor PID-temperature controller with integrated autodiagnostic system with fault indicator
- one Pt100 sensor class A in 4-wire-circuit
- integrated digital timer (1 min. up to 99 h 59 min) to switch off heating to stand-by mode
- digital LED- display of set and actual temperature as well as remaining process time
- resolution of display for set value and actual value 0,5 °C
Overtemperature protection (double) - in case of total breakdown of sensor, the heating is switched off at approx. 10 °C above set value
- in case of failure of the switching element, the heating will be controlled by an additional relay approx. 10 °C above the set temperature
- in case of a faulty sensor (incorrect measuring values) or the total breakdown of the controller the heating is switched off at approx. 10 °C above the max. oven temperature by the mechanical temperature limiter TB protection class 1
- for very sensitive and/or valuable load in terms of being non-reproducable, we recommend ovens of our E- and P-class guaranteeing an even higher safety standard
Textured Stainless Steel Casing - w x h x d: 710 x 760 x 550 mm
- fully insulated stainless steel door with double locking and 4-point adjustment
- rear zinc-plated steel
Interior - Heating Concept - w x h x d: 560 x 480 x 400 mm, 108 l
- easy-to-clean interior, made of stainless steel, reinforced by deep drawn ribbing with integrated and protected large-area heating on four sides
- 2 perforated stainless steel shelves, non-tipping
Temperature Range - from +30 °C (however, at least 5 °C above ambient) up to +220 °C
Voltage / Power Rating - 230 V (+/- 10%), 50/60 Hz
- ca. 2.000 W (during heating)
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