Siemens sitrans tr200, Руководство по эксплуатации

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Functions
8.13 Sensor calibration
SITRANS TR200/TR300
44
Operating Instructions, 04/2007, A5E01071992-01
Trimming the upper sensor calibration point
With these function:
●
Apply the process variable on which the upper sensor calibration should be performed is
applied, e.g. temperature or resistance, to the transmitter input.
● Use the operating software to command the transmitter to load this process value.
Loading the process value represents a slope correction of the characteristic curve, see C, in
the "Sensor calibration" diagram. The lower sensor trim point is not affected by this.
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Figure 8-2 Sensor calibration
O Output characteristic
B Characteristic curve after lower sensor trim
C Characteristic curve after upper sensor trim
Note
If any of the following device parameters is changed by re-parameterization, a two point
sensor calibration of SITRANS TR200/TR300 performed specifically for a customer is
automatically reset:
•
Sensor class
• Sensor type
• Interface
•
Sensor connection
•
Sensor factor
A double point sensor calibration performed by the user is also reset if the device is restored
to its factory settings.
The sensor calibration can be performed both for measurement channel 1 and for
measurement channel 2 in the differential value or mean value interface type.