VEGA VEGASON 71 - 2 … 75 - 2 - Manual (Page 24)

Linearization
24 71 - 2 … 75 - 2
Linearization Adapting to vessel geometry (channel 1)
The most usual vessel geometries are adjusted as
fixed curves in mode 0 - 18.
Mode 0 - 18 = 1 Fixed curve (linear) level percentage
for cylindrical tank output
Mode 0 - 18 = 2 Fixed curve for volume percentage
cylindrical tank output
It is also possible to program three customer
specific curves by accessing linearization 4 … 6
and to activate them in mode 18. Each linearization curve consists of max. 32 index
markers, each index marker of a H/L-pair.
Mode 0 - 18 = 4 linearization curve 4 volume percentage
5 5 output
6 6
Output condition for the level in litres see
page 26, related to channel 1
- adjustment related to 0 % and 100 %, is carried
out
- Mode 0 - 15 = 3 (1 level percentage)
- Mode 0 - 18 = 1
- total volume of the vessel is known (for the
following example 100 m
3 )
- part volume for gauging the capacitance in litres
is known (for the following example = 5 m
3 )
Same procedure for channel 2.
MODE 0 - 18
Selection of linearization curve 4 … 6
Each linearization curve 4 … 6 can be accessed in
mode 0 - 99 and the reset carried out.
MODE 0 - 99
Programming example Linearization 4 ............. • select mode 0 - 99 in MODEFIELD
• program figure 4 in PARAMETER FIELD
• then store with STO-button
• push MOD-button to select index markers
Reset in mode 99 with figure 0 in PARAMETER
FIELD.
Selection of linearization curve 4 … 6
Reset to general parameter adjustment
0 - 99
0 - 01
4
5
4 H.01
5 H.01
6 H.01
32 4 - 99
6
0