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Universal Convection Oven

Memmert UNB 500

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

Features: 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