This comprehensive range is
available at 1400, 1500 and 1600°C with four popular capacities
of 2.9, 7.8, 14.8 and 35 lites (1600°C version has a maximum capacity
of 37.5 litres). Powerful silicon carbide heating elements provide fast
heat up rates, typically 40 minutes to 1400°C depending on the model.
Silicon carbide heating elements are ideally suited
to the rigorous firing cycles often required in laboratory furnaces.
These elements withstand the stresses of intermittent operation and
give long life at elevated temperatures. Furnaces using these elements
are designed with excess power to ensure that aging is easily corrected
and heating performance is maintained. The average life of the elements
may be several years, depending on operating temperatures and conditions.
They are easy to replace when either hot or cold and require only the
removal of the furnace back panel (the RHF 16/37 requires the removal
of two side panels).
Two types of insulation are used: Hard wearing refractory
brick around the doorway and in the floor to give resistance to abrasion
and spillage. Lightweight ceramic fibre is used in all other areas to
ensure energy efficiency and fast heating/cooling. The RHF 16/37 is
insulated totally by hard wearing refractory brick.
A parallel opening door allows full and easy access to the chamber and keeps the hot face insulation away from the operator during loading/unloading.
Silicon Carbide Heated Furnace
When the door is opened, a positive action safety switch automatically isolates power supply to the heating elements to protect the operator from contact with the live heating element.
Solid state thyristor based zero voltage switching, and rapid cycle time, give smooth and reliable control and are fully compliant with European EMC legislation.
