Temperature Probe Calibration - Cal - Barnstead SUPER-NUOVA HP133420-33 Operation Manual And Parts List

S C
ERVICE AND ALIBRATION

Temperature Probe Calibration - CAL

This section applies only to the calibration of the temperature
probe system. The hot plate surface and the motor speed
cannot be calibrated. This method is only applicable to units
that have heating functionality.
There are two types of calibration available. The choice of
which calibration to choose will depend on the equipment that
is available. Calibration for either method is done at a single
user selectable temperature. Therefore the calibration will be
most accurate at that temperature. Note: The unit has not
been calibrated at any temperature from the factory. If you
wish to have your SUPER-NUOVA calibrated by Barnstead
International, contact customer service at 1-800-553-0039 for
further information.
The first and preferred method of calibration is SyS, also
known as System Calibration. This method can be used
when an independent temperature source such as a bath is
not available. The hot plate itself is used to supply the bath.
Although an independent and accurate method of determining
temperature is still required. This measuring system could be
as simple as an accurate thermometer. See the "Accessories"
section for N.I.S.T. traceable thermometers available from
Barnstead International. The bath chosen should be as simi-
lar to the user's typical load as possible. For example, if the
load is 150ml of aqueous solution in a 500ml Erlenmeyer
flask, then the load during calibration should be the same.
The second type of calibration is OiL, also known as Oil Bath
Method. It is preferred due to the relative ease and speed at
which the procedure can be performed. This method will
require the customer to have a precision bath with tempera-
ture readout. The bath could be oil, water, salt, or other fluid
or material as long as the temperature is stable and the read-
out is accurate. A thermocouple simulator may also be used,
but this will not correct for error in the probe.
23