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PRESYS
Instruments
The countdown of the stabilization time is only started when the block temperature
reaches the programmed temperature and stabilizes withing a range of aproximately
0.05 ºC. At this time the buzzer beeps, in case it is configured to YES.
2.5 - Automatic Operating Mode
The thermoelement calibration is perfomed in an automatic way bay the calibrator.
The configuration, as well as the calibration verification is carried out by the calibration
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 the menu COM.
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
eletric sinal to be read. In this case, option IN from the menu must be configurede to NO
and the calibrator will ask to enter the value indicated by the thermometer, at the end os
the stabilization time os 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 set point temperature.
• STR: the calibration strategy of the programmed reference values. The
available strategies are:
- UP),
(UP - DOWN - UP) and
• RP: the strategy number of repetitions.
• RGI: the thermo-element indication range.
• RGO: the operating temperature range that corresponds to the indication
range
The automatic calibration begins when the option EXEC from the menu COM is
selected. All the operations are automatizally performed by the calibrator. The keypad
dows not work until the end of the calibration.
At the end of the stabilization time, the calibrator stores the thermoelement
reading in memory and goes to the next point, in case some input signal has been
previosly 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 the 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 readings
TAG
EXEC
ADDRESS
(UP),
(DOWN),
TE -25N / TE-35N / TE-50N
VERIF
TAGMAN
(UP - DOWN),
(DOWN - UP - DOWN).
(DOWN
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