** تجهیزیاران **

Muffle Furnaces with Flap Door or Lift Door

L 1/12 - LT 40/12

The muffle furnaces L 1/12 - LT 40/12 are the right choice 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.

• 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)
• Ceramic heating plates with integral heating element which is safeguarded against fumes and splashing, and easy to replace
• Insulation made of non-classified fiber material
• Housing made of sheets of textured stainless steel
• Dual shell housing for low external temperatures and high stability
• Optional flap door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Solid state relays provide for low-noise operation
• Defined application within the constraints of the operating instructions

Additional equipment

• Chimney, chimney with fan or catalytic converter (not for L 1)
• 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
• Manual or automatic gas supply system
• Process control and documentation with Controltherm MV software package

Model	Tmax	Inner dimensions in mm			Volume	Outer dimensions in mm			Connected	Electrical	Weight	Minutes
Flap door	°C	w	d	h	in l	W	D	H	load kW	connection*	in kg	to Tmax2
L 3/11	1100	160	140	100	3	380	370	420	1.2	1-phase	20	60
L 5/11	1100	200	170	130	5	440	470	520	2.4	1-phase	35	60
L 9/11	1100	230	240	170	9	480	550	570	3.0	1-phase	45	75
L 15/11	1100	230	340	170	15	480	650	570	3.5	1-phase	55	90
L 24/11	1100	280	340	250	24	560	660	650	4.5	3-phase	75	95
L 40/11	1100	320	490	250	40	600	790	650	6.0	3-phase	95	95
L 1/12	1200	90	115	110	1	250	265	340	1.5	1-phase	10	25
L 3/12	1200	160	140	100	3	380	370	420	1.2	1-phase	20	75
L 5/12	1200	200	170	130	5	440	470	520	2.4	1-phase	35	75
L 9/12	1200	230	240	170	9	480	550	570	3.0	1-phase	45	90
L 15/12	1200	230	340	170	15	480	650	570	3.5	1-phase	55	105
L 24/12	1200	280	340	250	24	560	660	650	4.5	3-phase	75	110
L 40/12	1200	320	490	250	40	600	790	650	6.0	3-phase	95	110

Model	Tmax	Inner dimensions in mm			Volume	Outer dimensions in mm			Connected	Electrical	Weight	Minutes
Lift door	°C	w	d	h	in l	W	D	H1	load kW	connection*	in kg	to Tmax2
LT 3/11	1100	160	140	100	3	380	370	420+165	1.2	1-phase	20	60
LT 5/11	1100	200	170	130	5	440	470	520+220	2.4	1-phase	35	60
LT 9/11	1100	230	240	170	9	480	550	570+290	3.0	1-phase	45	75
LT 15/11	1100	230	340	170	15	480	650	570+290	3.5	1-phase	55	90
LT 24/11	1100	280	340	250	24	560	660	650+335	4.5	3-phase	75	95
LT 40/11	1100	320	490	250	40	600	790	650+335	6.0	3-phase	95	95
LT 3/12	1200	160	140	100	3	380	370	420+165	1.2	1-phase	20	75
LT 5/12	1200	200	170	130	5	440	470	520+220	2.4	1-phase	35	75
LT 9/12	1200	230	240	170	9	480	550	570+290	3.0	1-phase	45	90
LT 15/12	1200	230	340	170	15	480	650	570+290	3.5	1-phase	55	105
LT 24/12	1200	280	340	250	24	560	660	650+335	4.5	3-phase	75	110
LT 40/12	1200	320	490	250	40	600	790	650+335	6.0	3-phase	95	110
1Including opened lift door *Please see page 60 for more information about supply voltage 2If connected at 230 V 1/N/PE rsp. 400 V 3/N/PE