Description

Clarkson L244K2LN2-480
Muffle Furnace L24/12 with B510 Controller 480V
Nabertherm L-244K2LN2-480

Muffle Furnaces up to 1200 °C

The muffle furnaces L 1/12 – LT 40/12 have been proven for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability. The muffle furnaces come equipped with either a flap door or lift door at no extra charge.

Standard Equipment

Tmax 1100 °C or 1200 °C
Heating from two sides by ceramic heating plates (heating from three sides for muffle furnaces L 24/11 – LT 40/12) for an optimal temperature uniformity
Temperature uniformity of +/− 5 K with closed fresh-air inlet in empty work space according to DIN 17052-1 at working temperatures above 800 °C
Thermocouple type N (1100 °C) or type S (1200 °C)
Ceramic heating plates with integral heating element which is safeguarded and easy to replace
Optional flap door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
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)
Adjustable air inlet integrated in door (see illustration)
Exhaust air outlet in rear wall of furnace
Controller B510 resp. R7 for L 1/12 (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

Chimney, chimney with fan or catalytic converter (not for L 1 and L 15)
Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the oven 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) not gas tight
Manual or automatic 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
Charging rack with closed or perforated trays for loading the furnace in two levels incl. holder for inserting/removing the trays up to a max. temperature of 800 °C and a max. loading weight of 2 kg for the L(T) 9/11 respectively 3 kg for the L(T) 15/11

See 1100C models here

Catalog Number	Model	TMax	Controller	Volume	Electrical	Interior Dimensions W x D x H (mm)	Exterior Dimensions² W x D x H³ (mm)	Weight
L-014K27N1-120	L1/12	1200C	R7	1L	120V 1.5kW 1-phase	90 x 115 x 110	290 x 280 x 430	10kg
L-014K27N1-208	L1/12	1200C	R7	1L	208V 1.5kW 1-phase	90 x 115 x 110	290 x 280 x 430	10kg
L-014K27N1-240	L1/12	1200C	R7	1L	240V 1.5kW 1-phase	90 x 115 x 110	290 x 280 x 430	10kg
L-034K2LN2-120	L3/12	1200C	B510	3L	120V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034K2LN2-208	L3/12	1200C	B510	3L	208V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034K2LN2-240	L3/12	1200C	B510	3L	240V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034K2ON2-120	L3/12	1200C	C550	3L	120V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034K2ON2-208	L3/12	1200C	C550	3L	208V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034K2ON2-240	L3/12	1200C	C550	3L	240V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-054K2LN2-120	L5/12	1200C	B510	5L	120V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054K2LN2-208	L5/12	1200C	B510	5L	208V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054K2LN2-240	L5/12	1200C	B510	5L	240V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054K2ON2-120	L5/12	1200C	C550	5L	120V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054K2ON2-208	L5/12	1200C	C550	5L	208V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054K2ON2-240	L5/12	1200C	C550	5L	240V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-094K2LN2-208	L9/12	1200C	B510	9L	208V 3.0kW 1-phase	230 x 240 x 170	415 x 455 x 515+240	35kg
L-094K2LN2-240	L9/12	1200C	B510	9L	240V 3.0kW 1-phase	230 x 240 x 170	415 x 455 x 515+240	35kg
L-094K2ON2-208	L9/12	1200C	C550	9L	208V 3.0kW 1-phase	230 x 240 x 170	415 x 455 x 515+240	35kg
L-094K2ON2-240	L9/12	1200C	C550	9L	240V 3.0kW 1-phase	230 x 240 x 170	415 x 455 x 515+240	35kg
L-154K2LN2-208	L15/12	1200C	B510	15L	208V 3.2kW 1-phase	230 x 340 x 170	415 x 555 x 515+240	40kg
L-154K2LN2-240	L15/12	1200C	B510	15L	240V 3.2kW 1-phase	230 x 340 x 170	415 x 555 x 515+240	40kg
L-154K2ON2-208	L15/12	1200C	C550	15L	208V 3.2kW 1-phase	230 x 340 x 170	415 x 555 x 515+240	40kg
L-154K2ON2-240	L15/12	1200C	C550	15L	240V 3.2kW 1-phase	230 x 340 x 170	415 x 555 x 515+240	40kg
L-244K2LN2-480 *	L24/12	1200C	B510	24L	480V 4.5kW 3-phase	280 x 340 x 250	490 x 555 x 580+320	55kg
L-244K2ON2-480	L24/12	1200C	C550	24L	480V 4.5kW 3-phase	280 x 340 x 250	490 x 555 x 580+320	55kg
L-404K2LN2-480	L40/12	1200C	B510	40L	480V 6.0kW 3-phase	320 x 490 x 250	530 x 705 x 580+320	65kg
L-404K2ON2-480	L40/12	1200C	C550	40L	480V 6.0kW 3-phase	320 x 490 x 250	530 x 705 x 580+320	65kg
LT Models
L-034H2LN2-120	LT3/12	1200C	B510	3L	120V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034H2LN2-208	LT3/12	1200C	B510	3L	208V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034H2LN2-240	LT3/12	1200C	B510	3L	240V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034H2ON2-120	LT3/12	1200C	C550	3L	120V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034H2ON2-208	LT3/12	1200C	C550	3L	208V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-034H2ON2-240	LT3/12	1200C	C550	3L	240V 1.2kW 1-phase	160 x 140 x 100	385 x 330 x 405+155	20kg
L-054H2LN2-120	LT5/12	1200C	B510	5L	120V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054H2LN2-208	LT5/12	1200C	B510	5L	208V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054H2LN2-240	LT5/12	1200C	B510	5L	240V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054H2ON2-120	LT5/12	1200C	C550	5L	120V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054H2ON2-208	LT5/12	1200C	C550	5L	208V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-054H2ON2-240	LT5/12	1200C	C550	5L	240V 2.4kW 1-phase	200 x 170 x 130	385 x 390 x 460+205	30kg
L-094H2LN2-208	LT9/12	1200C	B510	9L	208V 3.0kW 1-phase	230 x 240 x 170	415 x 455 x 515+240	35kg
L-094H2LN2-240	LT9/12	1200C	B510	9L	240V 3.0kW 1-phase	230 x 240 x 170	415 x 455 x 515+240	35kg
L-094H2ON2-208	LT9/12	1200C	C550	9L	208V 3.0kW 1-phase	230 x 240 x 170	415 x 455 x 515+240	35kg
L-094H2ON2-240	LT9/12	1200C	C550	9L	240V 3.0kW 1-phase	230 x 240 x 170	415 x 455 x 515+240	35kg
L-154H2LN2-208	LT15/12	1200C	B510	15L	208V 3.2kW 1-phase	230 x 340 x 170	415 x 555 x 515+240	40kg
L-154H2LN2-240	LT15/12	1200C	B510	15L	240V 3.2kW 1-phase	230 x 340 x 170	415 x 555 x 515+240	40kg
L-154H2ON2-208	LT15/12	1200C	C550	15L	208V 3.2kW 1-phase	230 x 340 x 170	415 x 555 x 515+240	40kg
L-154H2ON2-240	LT15/12	1200C	C550	15L	240V 3.2kW 1-phase	230 x 340 x 170	415 x 555 x 515+240	40kg
L-244H2LN2-480	LT24/12	1200C	B510	24L	480V 4.5kW 3-phase	280 x 340 x 250	490 x 555 x 580+320	55kg
L-244H2ON2-480	LT24/12	1200C	C550	24L	480V 4.5kW 3-phase	280 x 340 x 250	490 x 555 x 580+320	55kg
L-404H2LN2-480	LT40/12	1200C	B510	40L	480V 6.0kW 3-phase	320 x 490 x 250	530 x 705 x 580+320	65kg
L-404K1LN1-480	LT40/12	1200C	C550	40L	480V 6.0kW 3-phase	320 x 490 x 250	530 x 705 x 580+320	65kg