4DP002 Rev1
(4D35/4C35/3255 Service Manual)
Page 2 of 2
then you must change to the new Type C
probe. If you are currently using a Type
B probe, then there is no reason to change
the probe at this time. There should be
no performance difference between the
Type B and Type C sample probe designs.
E) Is there any difference in the handling and
maintenance of the three types of probe?
Answer
: During the initial installation of
the sample probe, the Type Astainless
steel probe may be bent slightly during
the alignment procedure. Although the
Type B and Type C probes are more flexi-
ble than the Type Aprobe, they cannot be
permanently bent due to the plastic con-
struction. If a change is needed during
alignment, the probe should be rotated in
the mandrel to the desired position.
During cryoscope operation, the same
wiping and cleaning process may be used
for any of these probes. To minimize
potential damage, care should always be
taken to avoid hitting the glass thermistor
bead.
F) When were these probes used in
cryoscope production?
Answer
: Cryoscopes shipped prior to
April 2002 contain the stainless steel
Type A probe.
Cryoscopes shipped from April 2002
through May 2003 contain the plastic
Type B probe.
Cryoscopes shipped in June 2003 and
later contain the new, composite stainless
steel/plastic Type C probe.
G) Does this change the part numbers used to
order replacement sample probes for my
cryoscope?
Answer
: If you are currently using the
one-piece plastic, Type B sample probe,
then there is no change to the part num-
bers (listed below). The new, Type C
probes are completely interchangeable
with the Type B probes.
Sample Probe
Cryoscope
Replacement Kit
Model 4D3 4D3102
Model 4C3 4C3701
Model 4250 4D3102
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