Presys T-650PH, Техническое руководство

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PRESYS

Instruments T-650PH
Page 14
A countdown of the stabilization time is only started when the block temperature
reaches the programmed temperature and stabilizes within a range of approximately

0.15 °C. At this time the buzzer beeps, in case it is configured to YES .
2.5 - Automatic Operating Mode
The thermo-element calibration is performed in an automatic way by the T-650PH
calibrator. The configuration, as well as the calibration verification is carried out by the
calibrator itself. Also it is possible to use the ISOPLAN software and its work orders, like
a CAC - Computer Aided Calibration.
The independent automatic calibration, without the use of ISOPLAN, is planned in
the option TAGMAN from menu COM .
TAG EXEC VERIF
ADDRESS

TAGMAN
Before you start programming, configure first the signal that will be read by the
calibrator in the menu IN . To calibrate glass thermometers, for example, there is no
electric signal to be read. In this case, option IN from the menu must be configured to
NO and the calibrator will ask to enter the value indicated by the thermometer, at the end
of the stabilization time of each calibration point.
The data for an automatic calibration concern:

TAG : the thermo-element tag identification.

SP : the block temperature reference values for the calibration (calibration points).

TOL : the maximum tolerance for the thermo-element operation.

STB : the stabilization time, in seconds, so that the thermo-element temperature
indicates correctly. This timer starts just after the block reaches and stabilizes at the
setpoint temperature.

STR : the calibration strategy of the programmed reference values. The available
strategies are:

(UP),

(DOWN),

(UP - DOWN),

(DOWN - UP),

(UP - DOWN - UP) and

(DOWN - UP - DOWN).

RP : the strategy number of repetitions.

RGI : the thermo-element indication range.

RGO : the operating temperature range that corresponds to the indication range
above.
The automatic calibration begins when the option EXEC from menu COM is
selected. All the operations are automatically performed by the T-650PH calibrator. The
keypad does not work until the end of the calibration.
At the end of the stabilization time, the calibrator stores the thermo-element
reading in memory and goes to the next point, in case some input signal has been
previously configured in the menu
IN and connected to the calibrator terminals.
The CALIBRATION END message appears on the display at the end of the
automatic calibration. Press ENTER to confirm. The results can be verified in option
VERIF from menu COM .
The first message in option VERIF informs the calibration result, with the number
of points that have succeeded. Following, press ENTER to verify each one of the
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