Siemens SITRANS P DS III Operating Instructions Manual page 110

Operator control functions via PROFIBUS
7.4 Settings
>
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.
Mass measurement
● Start SIMATIC PDM. The measurement of mass is calculated from the volume and
density. Therefore create an assignment between the pressure to be measured
(measuring range) and the volume to be recorded (working range) by setting the following
parameters:
>
>
>
>
● If there is no linear relationship between level and volume in your container, you can also
define a characteristic curve:
>
>
>
>
110
Start of scale value:
Full scale value:
> > Output scaling
Unit:
Start of scale value:
Full scale value:
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
as in "working range"
as in "working range"
as in "working range"
as in "working range"
as in "working range"
Volume
Unit of volume [m , dm
3
Volume
User-defined table
max. 31
Pressure value
Operating Instructions, 02/2016, A5E00053276-08
, cm , mm , l ...]
3 3 3
SITRANS P DS III/P410 with PROFIBUS PA