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29
Calibration of Pt100 Probes
The calibration procedure is accessible from the Menu: key <MENU>
Æ
Function
5) Calibrate
(on
p.23 there is a definition of the options of the Calibration function applicable to all types of probes).
1)
Set default Pt100
: this function transfers the nominal values of the Pt100 sensor into the memory
of the selected probe (to be used if the probe has not been calibrated and is not possible to per-
form calibration).
2) Calibrate probe
: this function is used to calibrate the probe on one, two or three points: one point
is necessarily 0°C, the second one has to be selected from 95°C to 105°C and the third one from
150 and 400°C.
Calibration on two or three points is not necessary: when some points are lacking, the instrument
will use for those points the value stored in the previous calibration or, if no previous value is
available, it will use the factory calibration value (see
Probe Options
on p.16).
5
1
Calibration of the
probe connected
to input A is started
0
1
2
3
4
5
7
9
6
8
Procedure:
The following picture shows the different steps to carry out a calibration on three points.
Enter the second calibration point
(the instrument proposes 100.00°C)
Enter the third calibration point
(the instrument proposes 200.00°C)
Use the arrows to change the reference value
(temperature measured by the reference thermometer)
Use the arrows to change the reference value
(temperature measured by the reference thermometer)
Temperature measured by the datalogger
Temperature measured by the datalogger
Temperature measured by the datalogger
2
<ESC> exit/cancel
