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Nabertherm Chamber Furnace LH 30/12/B500, 30 l, Tmax 1,200 °C, Brick Insulation, LH0322NKNE

Product information "Nabertherm Chamber Furnace LH 30/12/B500, 30 l, Tmax 1,200 °C, Brick Insulation, LH0322NKNE"

The Nabertherm chamber furnace LH 30/12 is the smallest model of the brick insulated LH series carried by LT Laborhandel and provides 30 litres of usable space at Tmax 1,200 °C. Five sides of the furnace chamber are heated, the heating elements sit on support tubes and radiate freely, behind them sits a multi layer insulation of lightweight firebricks with special rear insulation.

Construction and door

The housing is double walled, made of textured stainless steel sheet, this keeps the external temperature low and gives the furnace stability. As standard, the door seals brick on brick, hand ground, and is therefore the standard design of this model. In the floor, a recessed SiC plate protects the floor heating and provides a level stacking surface for the charge. Inside, the usable space measures 320 x 320 x 320 mm, externally the LH 30/12 measures around 710 x 930 x 1,290 mm depending on additional equipment, the weight is 200 kg.

Controller B500 and connection

The controller B500 is mounted in the furnace door and can be removed for operation. It stores five programs of four segments each via touch operation. The LH 30/12 is connected three phase, whereby the heating itself works only between two phases, and draws 7 kW while doing so. A motor driven exhaust flap and a continuously adjustable air inlet slide in the furnace floor regulate the airflow during the process. The installed heating power is generously sized and enables short heating times.

Insulation and ceiling arch

For this series, Nabertherm uses exclusively insulation materials without classification under the CLP Regulation (EG) Nr. 1272/2008. A self supporting ceiling arch gives the furnace chamber additional stability and protects against dust ingress from above. As over-temperature protection for furnace and charge, an adjustable temperature limiter with adjustable cut-off temperature can be ordered as a factory option.

Selection guide

If 30 litres are not enough, LT Laborhandel carries two larger versions of the same temperature class with the LH 120/12 and the LH 216/12. The LH 120/12 offers a connected load of 12 kW at four times the usable volume of 120 litres and weighs a good two times as much at 410 kg, the LH 216/12 reaches 20 kW and 470 kg at 216 litres. If a higher final temperature than 1,200 °C is needed, the LH 30/14 is available as the same size variant up to 1,400 °C, it also weighs 200 kg and has a connected load that is 3 kW higher at 10 kW. Those looking for a fibre insulation with shorter heating and cooling times will find it in this size as the LF 30/13 up to 1,300 °C or as the LF 30/14 up to 1,400 °C, an LF version up to 1,200 °C does not exist.

Typical applications

With the weighing device available as a factory option, the LH 30/12 can be set up for loss on ignition determinations. Via a protective gas connection, the furnace chamber can be purged with non-flammable process gases, an optional cooling system cools the furnace with a predefined temperature gradient or a fixed set fresh air volume.

Technical details

Tmax1,200 °C
Usable volume30 l
Internal dimensions (W x D x H)320 x 320 x 320 mm
External dimensions (W x D x H)approx. 710 x 930 x 1,290 mm (varies with additional equipment)
Connected load7 kW
Electrical connectionthree phase (heating only between two phases)
Weight200 kg
Heatingfive sided, heating elements on support tubes
Insulationlightweight firebricks, multiple layers with rear insulation
Doorfixed door, brick on brick seal
ControllerB500, touch operation, 5 programs of 4 segments each

Other models in the series

In the 1,200 °C temperature class, Nabertherm builds the brick insulated chamber furnace LH in five sizes from 15 to 216 litres.

ModelVolumeTmax
LH 15/12 (on request)15 l1,200 °C
LH 30/12 (this page)30 l1,200 °C
LH 60/12 (on request)60 l1,200 °C
LH 120/12120 l1,200 °C
LH 216/12216 l1,200 °C

Scope of delivery

  • 1x Nabertherm chamber furnace LH 30/12 with standard controller B500
  • Stand

Regulatory information

The device is an electrical appliance within the meaning of the German Electrical and Electronic Equipment Act (ElektroG). The WEEE registration number of the manufacturer Nabertherm GmbH is DE 31598342. Information on the return of old appliances can be found on our Environment and disposal page.

Individual requirements and procurement service

Factory options available for the LH 30/12 include a parallel swing door, a lift door with electro-mechanical linear drive, a cooling system with a predefined temperature gradient, a protective gas connection, a manual or automatic gas supply system, an exhaust air hood or stainless steel chimney, a weighing device for loss on ignition determinations, a temperature limiter, and the VCD software package for process control and documentation. For individual requirements, LT Laborhandel provides personal advice.