Siemens SITRANS P DS III - Linearization Type Function Group

Operator control functions via PROFIBUS
7.1 Communications structure for PROFIBUS PA
SITRANS P DS III with PROFIBUS PA
100 Operating Instructions, 06/2013, A5E00053276-07
7.1.3.2
Linearization type function group
The normalized pressure is fed through the linearization algorithms for adjustment to the
various process requirements, as shown in the following figure. The algorithm is switched
using the "Characteristic curve type" parameter.
0
Linear
1
User-defined "table"
10
Root
240
Root/table
Figure 7-3 Linearization type function group
Table 7- 3 Available linearization functions
Measurement task
Linearization symbol
Characterist
ic curve
type
Description
Pressure
measurement
- Linear No linearization
Level: Height
-
Linear
No linearization
Level: Volume User
defined
(table)
Linearization of container
characteristics.
The relationship between level and
volume is described using a maximum
of 31 nodes at arbitrary intervals.