struers Tenupol-3 Gebrauchsanweisung Seite 12

Jets (Fig. 5 and 6)
Specimen holders (Fig. 7)
Cooling coil
and thermometer (Fig. 2)
PVC-reservoir
10
Tenupol-3
Instruction Manual
The two jets and jet holders are made of PVC. The standard jets have an
inside diameter of 1 mm and are normally used together with the 3 mm or
2.3 mm specimen holders. The jet holders are also available with jets of
Ø2.5 mm for use with 10 mm specimen holders or highly viscous
electrolytes (see section ACCESSORIES).
The individual jet is wound with a helix of platinum wire which functions as a
cathode. The platinum wire is connected to the socket at the side of the jet
holder. When the jet holders are mounted in the polishing cell the two
banana plugs are plugged into the sockets (Fig. 5.1), whereby the platinum
wires are connected to the polishing circuit.
The standard specimen holder which is supplied with the apparatus it is
made of PVC with carbon reinforced teflon insertions and is designed for
thinning of specimens with diameter 3 mm and max. thickness 0.5 mm. The
specimen is placed in a platinum fixture (Fig. 7.4), which by means of a
stainless steel contact part (Fig. 7.5) is connected to the polishing circuit
when lowered into the polishing cell.
One half part of the specimen holder carries the platinum fixture and the
contact part. The other half part has a displaceable diaphragm (Fig. 7.3).
The displaceable diaphragm implies that the thickness of the specimen
(less than 0.5 mm) is not a critical problem when retaining the specimen in
the holder.
Specimen holders for Ø2.3 mm specimens and holders with 10 mm inside
diameter are available as accessories (See section ACCESSORIES).
On the lower side of the base plate the corrosion resistant cooling coil (Fig.
2.4) is fixed so that the hose connectors (Fig. 2.6) are located on the rear
edge of the base plate. Depending on the chosen cooling method, either
hoses from a cold water tap or a separate recirculating cooling unit is
connected.
In the thermometer pocket (Fig. 2.5) a thermometer -50/+20°C is placed. If
an operation requires a different range, the thermometer can easily be
replaced.
The standard equipment comprises both an insulated and an uninsulated
PVC-reservoir. The insulated reservoir is normally used when the electrolyte
is cooled by the cooling coil. The uninsulated reservoir is used when cooling
is done by an ice bath or the like.