ABB LWT300 series, User Manual

Page: 61 / 108

Configuring the instrument
57
Setting the vessel diameter
To set the vessel diameter:
1
Select
Device Setup
>
Linearization
>
Volume Calculation
>
Cylinder Diameter
.
2
Press
Edit
.
3 Set the vessel diameter and press OK .
Setting the vessel length
To set the vessel length:
1 Select Device Setup > Linearization > Volume Calculation > Cylinder Length .
2
Press
Edit
.
3
Set the vessel length and press
OK
.
Generating a linearization table automatically
Once you have set your vessel parameters, you can generate a linearization table automatically by
selectring
Device Setup
>
Linearization
>
Volume Calculation
>
Gen Linearization
and clicking
OK
.
This automatically create a linearization table based on your vessel parameters.
Setting up linearization points
The first point is always the point with the lowest value and all other points must be set in increasing order.
To properly configure the linearization feature:
1 Select Device Setup > Linearization > Set LIN. Points .
The 00 linearization point is highlighted (see below).
2
Press the Left action key to select the measured level (
In
).
3
Press the Right action key to edit the
In
value, and press
OK
when you are done.
4 Press the Left action key to select the output associated with the measured level ( Out ).
5 Press the Right action key to edit the Out value, and press OK when you are done.
6
Press the Left action key to highlight the linearization point again.
7
With the Up and Down arrow keys, change the linearization point.
8 Repeat steps 2 to 7 for all the required linearization points.
9 All your linearization points that you just created compose your linearization table.
NOTICE
If you need to modify any linearization point or the maximum value in the future, you
MUST
first disable the linearization function (see “Enabling the linearization function” on page 58)
or use the automatically-generated table (see “Generating a linearization table automatically”
on page 57).