Muffle Furnaces with Embedded Heating Elements in the Ceramic Muffle up to 1100 °C

Furnace chamber with embedded ceramic muffle, high resistance to aggressive gasses and vapours.

Process Control

Function and equipment

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We particularly recommend the muffle furnace L 9/11/SKM for heat treatment of aggressive substances. The furnace has a ceramic muffle with embedded heating from four sides. The muffle furnace thus combines a very good temperature uniformity with excellent protection of the heating elements from aggressive atmospheres. Another aspect is the smooth, nearly particle free muffle (furnace door made of fiber insulation), an important quality feature.

Standard Equipment

  • Tmax 1100 °C
  • Muffle heated from four sides
  • Furnace chamber with embedded ceramic muffle, high resistance to aggressive gasses and vapours
  • Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
  • Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
  • Optional flap door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
  • Adjustable working air inlet in the door
  • Exhaust air outlet in rear wall of furnace
  • Controller with touch operation B510 (5 programs with each 4 segments)
  • Solid state relays provide for lownoise operation
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

Additional Equipment

  • Chimney, chimney with fan or catalytic converter
  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
  • Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
  • Manual or automation gas supply system
  • Port for thermocouple in the rear wall or in the furnace door
  • Process control and documentation via VCD software package for monitoring, documentation and control

Technical specifications

Modell

Tmax

Inner dimensions in mm

Volume

Outer dimensions2 in mm

Max. connected

Electrical

Weight

Heating time

 

in °C1

w

d

h

in l

W

D

H

load in kW

connection

in kg

in min4

L 9/11/SKM

1100

230

240

170

9

490

505

580

3.7

1-phase

50

75

LT 9/11/SKM

1100

230

240

170

9

490

505

580+3203

3.7

1-phase

50

75

1Recommended working temperature for processes with longer dwell times is 1000 °C
2External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
3Including opened lift door
4Heating time of the empty and closed furnace up to Tmax −100 K (connected to 230 V 1/N/PE)


 

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