CatalogueHeating and cooling technologyHeatingOvens, FurnacesMuffle furnaces series L 3/11 - L 40/11 series, max. 1100 °C, with flap door
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Muffle furnaces series L 3/11 - L 40/11 series, max. 1100 °C, with flap door


Muffle furnaces series L 3/11 - L 40/11 series, max. 1100 °C, with flap door

Muffle furnaces series L 3/11 - L 40/11 series, max. 1100 °C, with flap door

For daily laboratory use. Models with flap door or lift door available, for temperatures from 1100 °C to 1400 °C.
  • Dual shell housing made of textured stainless steel sheets for low external temperatures and high stability
  • Adjustable air inlet integrated in door
  • Exhaust air outlet in rear wall of furnace
  • Solid state relays provide low-noise operation
  • Optionally available with flap door (L models) that can be used as work platform or with lift door (LT models) with hot surface facing away from the operator
  • Equipped with the programmable controller B 410/510 (5 programmes with 4 segments each), optionally with the controller C 450 (10 programmes with 20 segments each), L 1/12 with controller R 7 (continuous operation)
  • All insulation materials used are classified as non-carcinogenic according to TRGS 905, Class 1 or 2
  • Standard connection 220-240 V 1/N/PE 50/60 Hz

1100 °C and 1200 °C models
  • Ceramic heating plates with integrated heating wire, splash and exhaust protected, easy to replace
  • heating from two sides (heating from three sides for muffle furnaces with interior volumes of 24 litres and 40 litres)


1300 °C and 1400 °C models
  • Heating elements on support tubes for free heat radiation, short heating times and long service life
  • Heating from two sides


Optional
  • Chimney, chimney with fan or catalytic converter
  • Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
  • Protective gas connection to purge with non-flammable protective or reaction gases (not available in combination with chimney, chimney with fan or catalytic converter)
  • Manual or automatic gas supply system
  • Process control and documentation via VCD software package for monitoring, documentation and control
Max. temperature 1100 °C. Flap door can be used as work platform.
 
 TypeFootnote reference markNominal
capacity
l
Internal
dimens­ions
(W x D x H)
mm
External
dimens­ions
(W x D x H)
mm
Rating
W
PKCat. No.
 L 3/11/B510 3160 x 140 x 100385 x 330 x 405120016.321 436
 L 3/11/C450 3160 x 140 x 100385 x 330 x 405120019.764 503
L 5/11/B410 5200 x 170 x 130385 x 390 x 460240016.092 769
 L 5/11/B410 (CH) 5200 x 170 x 130385 x 390 x 460240016.283 661
 L 5/11/C450 5200 x 170 x 130385 x 390 x 460240019.764 505
 L 9/11/B410 9230 x 240 x 170415 x 455 x 515300016.302 391
 L 9/11/B410 (CH) 9230 x 240 x 170415 x 455 x 515300016.284 803
 L 9/11/C450 9230 x 240 x 170415 x 455 x 515300019.764 509
 L 15/11/B410 15230 x 340 x 170415 x 555 x 515350016.056 446
 L 15/11/C450 15230 x 340 x 170415 x 555 x 515350019.764 507
 L 24/11/B410*24280 x 340 x 250490 x 555 x 580450016.206 861
 L 24/11/C450*24280 x 340 x 250490 x 555 x 580450019.764 504
 L 40/11/B410*40320 x 490 x 250530 x 705 x 580600017.660 691
 L 40/11/C450*40320 x 490 x 250530 x 705 x 580600019.764 506
* 400 V 3/N/PE 50/60 Hz connector as standard
External dimensions vary for versions with additional equipment. Dimensions on request.

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