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Nabertherm Muffle Furnace L 5/12/B510, 5 l, Tmax 1,200 °C, Flap Door, L-055K2AL

Product information "Nabertherm Muffle Furnace L 5/12/B510, 5 l, Tmax 1,200 °C, Flap Door, L-055K2AL"

The Nabertherm L 5/12 combines 5 litres of usable space with Tmax 1,200 °C and a flap door that also serves as a shelf. Compared with the 1,100 °C version, it takes somewhat longer to heat up at around 59 minutes and works with a type S thermocouple.

Construction, heating and insulation

Inside, the usable space measures 205 x 170 x 130 mm, externally 385 x 390 x 460 mm. The double walled, rear ventilated housing is made of textured stainless steel sheet, heating is from two sides via ceramic heating plates with integrated heating wire. As insulation material, exclusively a variant without classification under the CLP Regulation (EG) Nr. 1272/2008 is used, aluminium silicate wool (RCF fibre) is not installed. At 230 V 1/N/PE or 400 V 3/N/PE, heating the empty, closed furnace to Tmax minus 100 K takes around 59 minutes, the weight is 27 kg.

Controller and thermocouple

Operation is via the touch controller B510 with 5 programs of 4 segments each. NTLog Basic records process data on a USB stick, the heating works quietly via solid state relays. For Tmax 1,200 °C, a type S thermocouple is installed, the temperature uniformity at working temperatures above 800 °C in the empty usable space with the air inlet slide closed is +/-5 K according to DIN 17052-1.

Flap door and safety

The flap door can be used as a shelf during loading, an adjustable air inlet opening sits in the door, the exhaust air is drawn off via the rear wall. An adjustable temperature limiter with adjustable cut-off temperature is optionally available as additional over-temperature protection.

Selection guide for door type and temperature class

Those who prefer the hot side facing away from the operator when opening will find the lift door variant at the same usable space and temperature class in the LT 5/12 (article no. L-055H2AL). If the lower temperature class is sufficient, the L 5/11 with Tmax 1,100 °C offers an alternative.

Typical applications

The L/LT series is intended for use in laboratory and research. The L 5/12 suits where 5 litres of usable space are sufficient, but temperatures up to 1,200 °C are needed.

  • Laboratory samples requiring temperatures up to 1,200 °C
  • Research setups with 5 litres of usable space

Technical details

Manufacturer model designationL 5/12
Tmax1,200 °C
Usable volume5 l
Internal dimensions W x D x H205 x 170 x 130 mm
External dimensions W x D x H385 x 390 x 460 mm
Connected load2.6 kW, single phase
Weight27 kg
Heating time to Tmax -100 K59 min (empty, closed furnace, 230 V 1/N/PE or 400 V 3/N/PE)
HeatingTwo sides, ceramic heating plates
Temperature uniformity+/-5 K according to DIN 17052-1 (from 800 °C, empty usable space)
ThermocoupleType S
ControlB510, touch, 5 programs of 4 segments each
DoorFlap door
Housingdouble walled, rear ventilated, textured stainless steel sheet
Insulation materialwithout CLP classification (EG) Nr. 1272/2008, no RCF fibre

Other models in the series

The table shows all models in the L/LT series with Tmax 1,200 °C and flap door, sorted by usable volume:

ModelVolumeTmaxDoor
L 1/12 (on request)1 l1,200 °CFlap door
L 3/123 l1,200 °CFlap door
L 5/12 (this page)5 l1,200 °CFlap door
L 9/129 l1,200 °CFlap door
L 15/1215 l1,200 °CFlap door
L 24/12 (on request)24 l1,200 °CFlap door
L 40/12 (on request)40 l1,200 °CFlap door
L 60/12 (on request)60 l1,200 °CFlap door

Scope of delivery

  • 1x Nabertherm muffle furnace L 5/12 with controller B510

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 L 5/12 include an exhaust chimney, optionally with fan or catalytic converter, an adjustable temperature limiter with adjustable cut-off temperature, a protective gas connection for purging with non-flammable process gases, a manual or automatic gas supply system, a thermocouple feedthrough in the rear wall or furnace door, the VCD software package for process control and documentation, and a charging frame with multiple loading levels, usable up to 800 °C with 2 to 3.5 kg per level depending on the model. LT Laborhandel provides personal advice on this.

Volume: 5 l