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Memmert Universal Oven UN750plus, 749 l, +20 to +300 °C, TwinDISPLAY

Product information "Memmert Universal Oven UN750plus, 749 l, +20 to +300 °C, TwinDISPLAY"

With 749 litres of interior and up to 14 shelves, the Memmert UN750plus universal oven is the largest model of the UN-plus series. The unit stands on castors that can be moved and locked and is connected with 400 V and 3 x 230 V at approx. 7,000 W. The net weight is around 217 kg.

Interior for extensive batches

The interior measures 1,040 x 1,200 x 600 mm, and the housing measures 1,224 x 1,720 x 784 mm externally plus 56 mm for the door handle. The fully insulated stainless steel doors close via 2-point locking with a compression door seal, and two stainless steel grid shelves are included in the scope of delivery. A total load of up to 300 kg is permitted in all, with a maximum of 30 kg per shelf.

ControlCOCKPIT and documentation

Two DIN class A Pt100 sensors monitor each other in 4-wire measurement and automatically take over the function of the other in the event of a fault. The setting accuracy of the TwinDISPLAY is 0.1 °C up to a setpoint temperature of 99.9 °C and 0.5 °C above that. SetpointWAIT lets the process time start only after the setpoint temperature has been reached, and a digital countdown timer covers target times from 1 minute to 99 days. AtmoCONTROL manages the programmes via Ethernet or USB, and the sequence is retained in the event of a power failure.

Safety technology with high loads

A mechanical temperature limiter of protection class 1 according to DIN 12880 switches off the heating approx. 20 °C above the maximum oven temperature, and an adjustable temperature monitor of protection class 3.1 or an adjustable temperature limiter of protection class 2 can additionally be selected on the display. AutoSAFETY automatically follows the setpoint at a freely selectable distance and reports deviations visually and audibly, and HeatBALANCE redistributes the heating power between the upper and lower heating group by -50 to +50 per cent.

Guide to choosing the right size

If the interior of 1,040 x 1,200 x 600 mm is not fully utilised or eight instead of 14 shelves are sufficient, the UN450plus with 449 litres offers the same control technology in a more compact housing, see the size table below. For the largest batches and the most shelves within the series, the UN750plus remains the choice.

Typical applications

The UN750plus is suitable for drying, heating, tempering, ageing, baking, testing and curing in research, science, industry and quality assurance.

  • Drying and tempering large series with up to 14 shelves at the same time
  • Baking and curing in industry and quality assurance
  • Testing and ageing extensive batches in research and quality assurance

Technical details

Setting temperature range+20 to +300 °C
Working temperature rangemin. 5 °C above room temperature to +300 °C
Temperature setting accuracyup to 99.9 °C: 0.1 °C, from 100 °C: 0.5 °C
Temperature sensor2x Pt100, DIN class A, 4-wire measurement, redundant
Internal volume749 l
Internal dimensions (W x H x D)1,040 x 1,200 x 600 mm
External dimensions of housing (W x H x D)1,224 x 1,720 x 784 mm (plus 56 mm door handle)
Net weightapprox. 217 kg
Connection400 V and 3 x 230 V without neutral conductor (o.N.), 50/60 Hz, approx. 7,000 W
Shelves max.14
Shelves included in scope of delivery2
Max. load of unit300 kg
Max. load per shelf30 kg
Installation of housingmobile and lockable, on castors
Interiordeep-drawn ribbed, 4-sided all-round heating
ControlControlCOCKPIT TwinDISPLAY, PID microprocessor controller, 2x TFT colour graphic display
Additional functionsHeatBALANCE, AutoSAFETY, visual and audible alarm
Permissible ambient temperature+5 °C to +40 °C
Permissible humiditymax. 80 % rel., non-condensing
Max. installation altitude2,000 m
MarkingsCE, VDE GS, UL, EAC

Other sizes in the series

Eight sizes from 32 to 749 litres make up the UN-plus series with natural convection, listed below by internal volume:

ModelInternal volumeSetting temperatureDisplay
UN30plus32 l+20 to +300 °CTwinDISPLAY
UN55plus53 l+20 to +300 °CTwinDISPLAY
UN75plus74 l+20 to +300 °CTwinDISPLAY
UN110plus108 l+20 to +300 °CTwinDISPLAY
UN160plus161 l+20 to +300 °CTwinDISPLAY
UN260plus256 l+20 to +300 °CTwinDISPLAY
UN450plus449 l+20 to +300 °CTwinDISPLAY
UN750plus (this page)749 l+20 to +300 °CTwinDISPLAY

With SingleDISPLAY, the same volume is available in the UN series: UN750.

Scope of delivery

  • 1x Memmert universal oven UN750plus
  • Factory calibration certificate (calibration at +160 °C)
  • Fully insulated stainless steel doors with 2-point locking (compression door seal)
  • 2x stainless steel grid shelf, electropolished

Regulatory information

The device is an electrical device within the meaning of the German Electrical and Electronic Equipment Act (ElektroG). The WEEE registration number of the manufacturer Memmert GmbH + Co. KG is DE 66812464. Information on returning old devices is available on our page Environment and disposal.

Individual requirements and procurement service

For the UN750plus, a nearly gas-tight interior, interior lighting with socket and MobileALERT for alerting by SMS in the event of fault and alarm messages, among other things, can be ordered from the factory, as well as a full-view glass door and side or rear feed-throughs. Additional and reinforced grid shelves, perforated trays, drip trays and an installation frame are available as accessories. We arrange factory and DAkkS calibration, IQ/OQ documentation according to DIN 12880:2007-05 and on-site maintenance contracts on request. For individual requirements, we will advise you personally.

Volume: 749 l