Hi Calibration - Siemens SITRANS P DS III Operating Instructions Manual

Operation
6.5 Local operation
Note
In the case of transmitters for absolute pressure, note the following information:
• You need a thruster to apply the reference pressure.
• The value of the reference pressure can be changed by only about 10%.
Result
If the calibration was successful, the current measurement value of the device will be
displayed, and will correspond to the calibration value as long as the reference pressure is
still applied.
If you switch to the measured value display without taking a sufficiently large calibration span
into account, the pressure status "Bad" B_004 will be displayed.
The failure logic of the function block is activated. The output has the status "Unsure" U_0xx,
depending on the setting.
If the two trim points are too close together, status F_006 is displayed. The smallest
calibration span depends on the nominal measurement range. Select either the higher
reference pressure in mode 20, or the lower reference pressure in mode 19.
As long as mode 19 is active, you can repeat this procedure as often as necessary.
View LO calibration
To view the LO calibration, proceed as follows:
1. Set mode 19.
The display shows the value of the last calibration procedure, with the appropriate unit.
2. Leave the mode by pressing [M].
See also
Errors (Page 192)
Calibrating the sensor (Page 125)
6.5.13

HI calibration

Introduction
The slope of the characteristic is changed in mode 20. This rotates the characteristic around
setting point LO.
92
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08