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IM-P-20200627-01
6.11.8 Free Linearization Manually
When it’s not possible to enter and measure for a linearization in an actual process condition, a free linearization
can be configured manually. Known measurements values and volumes must be entered manually in the
transmitter.
1.
Navigate to program point
P111 – TANK LIN
, and push to confirm.
2.
Navigate to
Free lin.
with the navigation button, and push to confirm.
3.
Two choices appear on the screen:
Measured
and
Manual
4.
Select
Manual
to configure a free linearization in a process situation.
5.
Two choices appear on the screen:
Input
and
Simulate
6.
Select
Input
, and push to confirm
7.
Five choices appear on the screen:
DISPLAY
EXPLANATION
Clear table
The previous entered values for linearization will be deleted. It is advisable to use this feature for
each time a new linearization is configured.
CAUTION
•
All entered values and dimensions of an existing / previous linearization will be erased.
Volume units
Select the preferred unit: Liters, Hectoliters, Kg and Tons (after linearization the unit can be changed
and selected in
P109
)
Height
The height of the tank can be filled in (highly recommended for an accurate linearization). The
transmitter will determine with this height the span. A linearization will be made with the smallest
possible deviation. Factory setting = Saved span in
P102
.
Start Point
The contents of a tank can be configured up to 70 points. The entered value’s must be from
low to high (Filling an empty tank). The manually entered values will be displayed on the screen
in percentage (%) for
Xn
and for
Yn
in Hectoliters. To enter the next measured point move the
navigation button up and enter the values.
Example:
A tank filling must programmed in the
transmitter.
•
Choose
Clear Table
to remove all
possible previous settings.
•
Choose the preferred
Volume units
.
•
Fill in the
Height
of the tank (highly
recommended for an accurate
linearization).
•
In menu
Start Point
the linearization
points can be filled in. In
Xn1
the
percentage of the filling must be filled in.
In
Yn1
the corresponding volume. After
this, there are 69 more linearization points
available.
•
When all (needed) points are filled in, the
linearization must be saved. Push the
navigation button to the left and select
SAVE to save this linearization
Yn1: 0%
Xn1: 0 liter
Yn2: 8%
Xn2: 320 liter
Yn3: 40%
Xn3: 1600 liter
Yn4: 65%
Xn4: 2600 liter
Yn4: 85%
Xn4: 3400 liter
The figure above shows a tank with standard
dimensions. Free linearization can applied
on a wide variety of tanks with non-standard
dimensions.
Save
When all desired measurements are completed and all parameters have been set, the linearization
must be saved. Push the navigate button to the left and select
SAVE
SAVE
to save the linearization. The
transmitter will return to the main menu.
