Presys T-25N, Техническое руководство

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PRESYS

Instruments T-25N
Page 16
In this case, the dry block is only used as a heat generator, not as a standard
temperature calibrator. The user can use the fact that the dry block stability value is
much lower than its accuracy value. So, placing the superthermometer sensor and the
thermo-element under calibration in a two-hole-insert, it is possible to compare both
temperature measurement.
3.2 - Recommendations to Other types of Insert
When the user uses a different type of insert, other than the one used to adjust
the dry block, for example the cup like insert fulfilled with tiny steel balls, the accuracy
from the manual is no longer valid, since the thermal contact is different in relation to that
insert.
However, another control sensor adjustment can be performed to the new insert.
Do that using an external probe with high accuracy, placed in the new insert and follow
the steps described in item
6.2 - Probe Calibration
.
This new readjustment of the calibrator indication overwrites the factory calibration
and it remains even after turning off the dry block.
Should you want the factory calibration back again, activate the option
RESTORE
from menu calibration / probe.