Siemens SITRANS P DS III Operating Instructions Manual page 109

You can also adjust the output to another process value. Assign the required unit to the
parameters under the rubric output scaling. Assign the start of scale and full scale values
according to the measured value scaling.
Volume measurement
● Start SIMATIC PDM. Create an assignment between the pressure to be measured
(measurement range) and the volume to be recorded (working range), by setting these
parameters:
>
>
>
>
● If there is no linear relationship between level and volume in your container, you can also
define a characteristic curve:
>
>
>
>
● Create an assignment between the measured volume value and the output value by
setting these parameters:
>
>
>
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08
Input
> Transducer block 1
Transmitter type:
> > Measuring range
Start of scale value
Full scale value
> > Working range
Unit:
Start of scale value
Full scale value
Input
> Transducer block 1
Transmitter type:
> > Characteristic curve
Characteristic curve
type:
> > Nodes
New number of
nodes:
x[n] measurement
range:
y[n] working range: Corresponding volume value
Output
> Function block 1 - analog input
Channel:
> > Measured value scaling
Operator control functions via PROFIBUS
Volume
Unit of volume [m , dm
3
Volume
User-defined table
max. 31
Pressure value
Measured value (primary variable)
, cm , mm , l ...]
3 3 3
7.4 Settings
109