HIGH TEMPERATURE
FURNACE HANDBOOK
ISSUE 8 - 05/05
Page 17 of 37
CELL HANDLING
In order to facilitate introduction to, and removal from, the furnace, Isotech provides, for each
cell, supplementary equipment largely comprising an Inconel basket with detachable handle.
To prevent the cell-surface becoming discoloured, it is recommended that, before using the
cell, the basket and insulation be placed in the furnace and the furnace be taken to above
the cell working temperature for at least 2 hours. This operation outgasses the basket and
insulation, which may smoke and discolour during this first temperature excursion. The cell
can then be inserted into the basket in readiness for use. Please read section concerning
cleaning of cells prior to use and devitrification of the quartz. If removing the cell with a
thermometer in its pocket (e.g. tin cell), extreme caution is necessary in applying support by
means of the diametrally-pivoted handle. The handle will need to be maintained in a non-
vertical plane while being used for removing and replacing the assembly.
CELL KIT
Basket, handles, discs of ceramic insulation, inconel baffles and platinum foil discs if
required.
Sketches shows the recommended assembly of the cell basket (and insulation discs) in a
furnace core.
