Nabertherm Muffle Furnace L 3/11/B510, 3 l, Tmax 1,100 °C, Flap Door, L-035K1AL

The Nabertherm L 3/11 offers 3 litres of usable space, the smallest size in the L/LT series with Tmax 1,100 °C. The flap door opens forwards and also serves as a shelf, the single-phase connection requires 1.3 kW. For laboratory workstations with little bench space where small sample quantities are treated up to 1,100 °C, this is the most compact solution in the 1,100 °C class.

Housing, heating and insulation

The double-walled, rear-ventilated housing is made of textured stainless steel sheet. Inside, the working chamber measures 160 x 140 x 100 mm, externally the furnace is 385 x 330 x 405 mm. Heating is from two sides via ceramic heating plates with integrated heating wire, which are protected and easy to replace if required. The furnace is insulated exclusively with material without classification under CLP Regulation (EG) Nr. 1272/2008, aluminium silicate wool (RCF fibre) is not used. The empty, closed furnace heats up to Tmax minus 100 K in around 41 minutes (at 230 V 1/N/PE or 400 V 3/N/PE), the weight is 21 kg.

Controller B510 and process data

Operation is via the B510 touch controller with 5 programs of 4 segments each. The heating works with solid-state relays and therefore remains quiet during operation. Process data can be recorded on a USB stick with NTLog Basic. At working temperatures above 800 °C, the L 3/11 achieves a temperature uniformity of +/-5 K according to DIN 17052-1 in the empty working chamber with the air inlet slide closed. A type N thermocouple is installed for Tmax 1,100 °C.

Flap door and safety

The flap door can be used as a shelf during loading, an adjustable air inlet opening is located directly in the door. Exhaust air escapes via an opening in the rear wall of the furnace. As additional over-temperature protection, an adjustable temperature limiter with adjustable cut-off temperature is available as an option when ordering.

Selection guide for the right size

Those who need the higher temperature class in the same size will find it in the L 3/12 (article no. L-035K2AL) with type S thermocouple. If 3 litres of usable space are not sufficient, the L 5/11 with 5 litres provides more space, the complete size table is shown below.

Typical applications

The L/LT series is intended for use in laboratory and research. With 3 litres of usable space, the L 3/11 is designed for small sample quantities up to 1,100 °C and fits where little bench space is available.

• Laboratory workstations with small sample quantities up to 1,100 °C
• Research environments with limited bench space

Technical details

Other models in the series

The table shows all models in the L/LT series with Tmax 1,100 °C and flap door, sorted by usable volume:

Scope of delivery

• 1x Nabertherm muffle furnace L 3/11 with B510 controller

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

Further factory options can be ordered for the L 3/11: an exhaust chimney, optionally with fan or catalytic converter, an adjustable temperature limiter with adjustable cut-off temperature as additional over-temperature protection, 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 in the furnace door, the VCD software package for process control and documentation, and a charging frame for multiple loading levels, usable up to 800 °C with 2 to 3.5 kg per level depending on the model. Which option suits the respective application is clarified by LT Laborhandel in a personal consultation.