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  LH 60/12 with manual lift door and gas supply box for non-flammable protective or reactive gases LH 216/12SW with scale to measure weight reduction during annealing 

LH 120/12S process box made of quartz glass

Cooling fan in combination with motor-driven exhaust air flap to reduce cooling time

LH 15/12 - LF 120/14

The LH 15/12 - LF 120/14 laboratory furnaces have been trusted for many years as professional chamber furnaces for the laboratory. These furnaces are available with either a robust insulation of light refractory bricks (LH models) or with a combination insulation of refractory bricks in the corners and low heat storage, quickly cooling fiber material (LF models). With a wide variety of optional equipment, these models can be optimally adapted to your processes.

  • Tmax 1200  °C, 1300  °C, or 1400  °C
  • Five-sided heating for very good temperature uniformity
  • Heating elements on support tubes ensure free heat radiation and a long service life
  • Protection of bottom heating and flat stacking surface provided by embedded SiC plate in the floor
  • LH models: multi-layered, fiber-free insulation of light refractory bricks and special backup insulation
  • LF models: high-quality fiber insulation with corner bricks for shorter heating and cooling times
  • Door with brick-on-brick seal, hand fitted
  • Short heating times due to high installed power
  • Side vent with bypass connection for exhaust pipe
  • Self-supporting arch for high stability and greatest possible protection against dust
  • Quick lock on door
  • Freely adjustable air slide intake in furnace floor
  • Stand included

Additional equipment

  • Parallel swinging door, pivots away from operator, for opening when hot
  • Lift door with electro-mechanic linear drive
  • Separate wall-mounting or floor standing cabinet for switchgear
  • Motor driven exhaust air flap
  • Cooling fan for shorter cycle times
  • Protective gas connection for purging the furnace with non-flammable protective or reaction gases
  • Process box made of quartz glass for very clean atmosphere, quartz glass covered door with lid function
  • Manual or automatic gas supply system
  • Scale to measure weight reduction during annealing
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeating power inElectricalWeight
 °Cwdhin lWDHkW²connection*in kg
LH 15/12 1200 250 250 250 15 570 790 1170 5.0 3-phase¹ 150
LH 30/12 1200 320 320 320 30 640 860 1240 7.0 3-phase¹ 170
LH 60/12 1200 400 400 400 60 720 1010 1320 8.0 3-phase 260
LH 120/12 1200 500 500 500 120 820 1110 1420 12.0 3-phase 340
LH 216/12 1200 600 600 600 216 900 1210 1530 20.0 3-phase 400
                       
LH 15/13 1300 250 250 250 15 570 790 1170 7.0 3-phase¹ 150
LH 30/13 1300 320 320 320 30 640 860 1240 8.0 3-phase¹ 170
LH 60/13 1300 400 400 400 60 720 1010 1320 11.0 3-phase 260
LH 120/13 1300 500 500 500 120 820 1110 1420 15.0 3-phase 340
LH 216/13 1300 600 600 600 216 900 1210 1530 22.0 3-phase 400
                       
LH 15/14 1400 250 250 250 15 570 790 1170 8.0 3-phase¹ 150
LH 30/14 1400 320 320 320 30 640 860 1240 10.0 3-phase¹ 170
LH 60/14 1400 400 400 400 60 720 1010 1320 12.0 3-phase 260
LH 120/14 1400 500 500 500 120 820 1110 1420 18.0 3-phase 340
LH 216/14 1400 600 600 600 216 900 1210 1530 26.0 3-phase 400
                       
LF 15/13 1300 250 250 250 15 570 790 1170 7.0 3-phase¹ 130
LF 30/13 1300 320 320 320 30 640 860 1240 8.0 3-phase¹ 150
LF 60/13 1300 400 400 400 60 720 1010 1320 11.0 3-phase 230
LF 120/13 1300 500 500 500 120 820 1110 1420 15.0 3-phase 300
                       
LF 15/14 1400 250 250 250 15 570 790 1170 8.0 3-phase¹ 130
LF 30/14 1400 320 320 320 30 640 860 1240 10.0 3-phase¹ 150
LF 60/14 1400 400 400 400 60 720 1010 1320 12.0 3-phase 230
LF 120/14 1400 500 500 500 120 820 1110 1420 18.0 3-phase 300
¹Heating only between two phases *Please see page 80 for more information about supply voltage
²Depending on furnace design connected load might be higher
 

High-Temperature Chamber Furnaces with SiC Rod Heating

 
HTC 08/15  

Furnace chamber with high-quality fiber materials and SiC heating rods on both sides of the furnace

Saggars with top lid

Over-temperature limit controller

HTCT 03/14 - HTCT 08/16

These powerful laboratory muffle furnaces are available for temperatures up to 1400 °C, 1500 °C, 1550 °C or 1600 °C. The durability of the SiC rods in periodic use, in combination with their high heating speed, make these furnaces to all-rounders in the laboratory. Heating times of 40 minutes to 1400 °C can be achieved, depending on the furnace model and the conditions of use.

  • Tmax 1400  °C, 1500  °C, 1550 °C or 1600  °C
  • Working Temperature 1500  °C (for models HTC ../16), increased wear and tear of heating elements must be expected in case of working at higher temperatures
  • Model HTCT 01/16 with single phase connection
  • High-quality fiber material, selected for the working temperature
  • Housing made of sheets of textured stainless steel
  • Dual shell housing for low external temperatures and high stability
  • Optional flap door (HTC) which can be used as work platform or lift door (HTCT) with hot surface facing away from the operator (HTCT 01/16 only with lift door)
  • Switching system with solid-state-relays, power tuned to the SiC rods
  • Easy replacement of heating rods

Additional equipment

  • Over-temperature limit controller with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load
  • Square saggar for charging of up to three layers
  • Lid for top saggar
  • Manual or automatic gas supply system
  • Adjustable air intake opening in the furnace door, exhaust air opening in the roof
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeating power inElectricalWeightMinutes
 °Cwdhin lWDkW4connection*in kgto Tmax³
HTC, HTCT 03/14 1400 120 210 120 3.0 400 535 530 9.0 3-phase¹ 30 40
HTC, HTCT 08/14 1400 170 290 170 8.0 450 620 570 13.0 3-phase 40 40
                         
HTC, HTCT 03/15 1500 120 210 120 3.0 400 535 530 9.0 3-phase¹ 30 50
HTC, HTCT 08/15 1500 170 290 170 8.0 450 620 570 13.0 3-phase 40 50
                         
HTCT 01/16 1550 110 120 120 1.5 340 300 460 3.5 single-phase 18 40
HTC, HTCT 03/16 1600 120 210 120 3.0 400 535 530 9.0 3-phase¹ 30 60
HTC, HTCT 08/16 1600 170 290 170 8.0 450 620 570 13.0 3-phase 40 60
¹Heating only between two phases *Please see page 80 for more information about supply voltage
²Plus maximum 270 mm for models HTCT when open³If connected at 230 V 1/N/PE rsp. 400 V 3/N/PE
4Depending on furnace design connected load might be higher
 

High-Temperature Chamber Furnaces with MoSi2 Heating Elements as Table-Top Model

LHT 08/17 LHT 02/18 with gas supply system for four gases

Saggars with top lid

Over-temperature limit controller

LHT 02/16 - LHT 08/18

Designed as tabletop models, these compact high-temperature chamber furnaces have a variety of advantages. The first-class workmanship using high-quality materials, combined with ease of operation, make these furnaces all-rounders in research and the laboratory. These furnaces are also perfectly suited for the sintering of technical ceramics, such as zirconium oxide dental bridges.

  • Tmax 1600  °C, 1750  °C, or 1800  °C
  • High-quality molybdenum disilicide heating elements
  • Furnace chamber lined with first-class, durable fiber material
  • Housing made of sheets of textured stainless steel
  • Dual shell housing with additional fan cooling for low surface temperature
  • Furnace sizes of 2, 4, or 8 liters
  • Compact design with lift-door, opening upwards
  • Adjustable air inlet
  • Exhaust air opening in the roof
  • Type B thermocouple
  • Switching system with phase-angle firing thyristors (SCRs)

Additional equipment

  • Over-temperature limit controller with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load
  • Square saggar for charging of up to three layers
  • Process control and documentation with Controltherm MV software package
  • Protective gas connection for purging the furnace with non-flammable protective or reaction gases
  • Manual or automatic gas supply system
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeating power inElectricalWeightMinutes
 °Cwdhin lWDkW4connection*in kgto Tmax²
LHT 02/16 1600 90 150 150 2 470 700 750+350 3.0 single-phase 75 30
LHT 04/16 1600 150 150 150 4 470 700 750+350 5.2 3-phase¹ 85 25
LHT 08/16 1600 150 300 150 8 470 850 750+350 8.0 3-phase¹ 100 25
                         
LHT 02/17 1750 90 150 150 2 470 700 750+350 3.0 single-phase 75 60
LHT 04/17 1750 150 150 150 4 470 700 750+350 5.2 3-phase¹ 85 40
LHT 08/17 1750 150 300 150 8 470 850 750+350 8.0 3-phase¹ 100 40
                         
LHT 02/18 1800 90 150 150 2 470 700 750+350 3.6 single-phase 75 75
LHT 04/18 1800 150 150 150 4 470 700 750+350 5.2 3-phase¹ 85 60
LHT 08/18 1800 150 300 150 8 470 850 750+350 9.0 3-phase¹ 100 60
¹Heating only between two phases *Please see page 80 for more information about supply voltage
²If connected at 230 V 1/N/PE rsp. 400 V 3/N/PE ³Including opened lift door
4Depending on furnace design connected load might be higher
 

High-Temperature Lift-Bottom Furnaces

LHT 16/17 LB LHT 02/17 LB with a set of saggars

Electrically driven lift-bottom

Saggar

LHT/LB

The electrically driven lift-bottom considerably allows for proper charging of the LHT/LB furnaces. The heating all around the cylindrical furnace chamber provides for an opitimal temperature uniformity. For model LHT 02/17 LB the charge can be placed in charge saggars made of technical ceramics. Up to three charge saggars can be stacked on top of each other resulting in a high productivity. Due to its volume model LHT 16/17 LB can also be used for applications in production.

  • Tmax 1700  °C
  • High-quality molybdenum disilicide heating elements
  • Furnace chamber lined with first-class, durable fiber materials
  • Outstanding temperature uniformity due to all-round furnace chamber heating
  • Furnace chamber with a volume of 2 or 16 liters, table with large footprint
  • Spacers to lift-up the saggars already installed in the table
  • Precise, electric spindle drive with push button operation
  • Housing made of sheets of textured stainless steel
  • Exhaust air vent in the roof
  • Type S thermocouple
  • Switchgear with thyristor

Additional equipment

  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
  • Saggar for charging of up to three layers
  • Protective gas connection for purging the furnace with non-flammable protective or reaction gases
  • Manual or automatic gas supply system
  • Adjustable air inlet through the floor
  • Process control and documentation with Controltherm MV software package
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeating
power inElectricalWeight
 °CØhin lWDHkW¹connection*in kg
LHT 02/17 LB 1700 Ø 120 130 2 540 610 740 3.3 single-phase 85
LHT 16/17 LB 1700 Ø 260 260 16 650 1250 1980 12.0 3-phase 410
¹Depending on furnace design connected load might be higher *Please see page 80 for more information about supply voltage
 

High-Temperature Furnaces with Scale for Determination of Combustion Loss and Thermogravimetric Analyses (TGA)

 
  LHT 04/16 SW with scale for measuring weight reduction during annealing and with gas supply system

Software for documentation of the temperature curve and combustion loss using a PC

LHT 04/16 SW and LHT 04/17 SW

These furnaces were specially developed to determine combustion loss during annealing and for thermogravimetric analysis (TGA) in the lab. The complete system consists of the high-temperature furnace for 1600 °C or 1750 °C, a table frame, precision scale with feedthroughs into the furnace and powerful software for recording both the temperature curve and the weight loss over time.

  • Technical description of the furnaces: see models LHT 04/16 and LHT 04/17
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeating
power inElectricalWeightMinutes
 °Cwdhin lWDHkW³connection*in kgto Tmax²
LHT 04/16 SW 1600 150 150 150 4 655 370 890 5.0 3-phase¹ 85 25
LHT 04/17 SW 1750 150 150 150 4 655 370 890 5.0 3-phase¹ 85 40
¹Heating only between two phases *Please see page 80 for more information about supply voltage
²If connected at 230 V 1/N/PE rsp. 400 V 3/N/PE³Depending on furnace design connected load might be higher

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