Semi-automatic entry
Requirements
for semi-automatic entry of
the linearisation curve are as follows:
•
The vessel can be filled for e.g. empty/full
calibration and for linearisation can be
emptied as described below. The level is
automatically determined from the
hydrostatic pressure. The appropriate
volume is given in %.
•
The measured value is supplied as a
volume.
Note!
•
For step 1, you can also carry out a
zero correction according to the
procedure described in Chapter 5.1,
page 23.
•
A dry calibration can also be made
using steps 1-3, see page 31.
•
In edit mode V3H6 = Manual level, you
can delete individual points in a
linearisation table entering "9999" for
level or volume. But first activate the
linearisation table.
Entering the pairs of values for the
linearisation
curve
is
done
after
a
calibration with reference pressure or a dry
calibration in %. The procedure with
reference pressure is then carried out as
described below.
#
Matrix Path through the
menus
Entry
Fill the vessel to the zero point
1
Set the display to "0" by adopting an acting
bias pressure.
V0H6
➤
Sets bias
pressure
automatically
Confirm
2
Adopt the acting pressure for the lower
range-value (empty)
V0H3
➤
Sets 4 mA
automatically
Confirm
Fill the vessel to the end point (full)
3
Adopt the acting pressure for the upper
range-value
V0H4
➤
Sets 20 mA
automatically
Confirm
#
Changing product?
see "Density Correction" page 29
Main group: Linearisation
4
Select linearisation mode "semi-automatic
entry"
V3H6
Operation mode
➤
semi-automatic Confirm
5
Enter the table
V3H7
➤
Line No.
7
Confirm
V3H8
➤
Input level
Confirm
The actual level is automatically determined
V3H9
➤
Set volume
e.g. 100%
Confirm
Repeat step 5 until all points have been
entered.
6
Activate the table
V3H6
➤
Activate
table
Confirm
7
Select the operation mode "Level manual"
V3H0
➤
Level
manual
Confirm
8
Enter the level or volume at the minimum level
V3H1
➤
Display at
4 mA
e.g. 0
Confirm
9
Enter the level or volume at the maximum level
V3H2
➤
Display at
20 mA
e.g. 10
Confirm
10
Select the level or volume units
(Select unit from the tables on page 28)
V3H3
➤
Unit after
linearisation
e.g. hl
Confirm
1
4
6
5
3
2
7
BA187Y57
100
0 %
Lev
el
V
Full
Volume
V
Empty
Table giving example
Point
Measured
value
(mbar)
Level
(%)
Volume
(%)
1
0
0
0
2
100
20
8
3
200
40
20
…
7
500
100
100
Note!
volume at x % level =
total volume
volume (%)
10 0
•
6 Level Measurement
Cerabar S
34
Hauser
