User Manual

OPERATION 6
73
OPTIWAVE 7400-24 C
www.krohne.com12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
6.4.7 How to configure the device to measure volume or mass
The device can be configured to measure volume or mass. You can set up a strapping table in the
conversion table (2.8.0 CONV. TAB) sub-menu. Each entry is a pair of data (level – volume, level –
mass or level – flow rate). The strapping table must have a minimum of 2 entries and a
maximum of 30. The reference point for the table is the bottom of the tank (as given in menu item
2.3.1 TANK HEIGHT).
How to prepare a strapping table (conversion table)
• Enter the supervisor menu.
• Push [>
>>
>], 6 × [

], [>
>>
>] and [

] to go to 2.7.2 LENGTH UNIT.
• Push [

] and [

] to find the length unit that you will use in the table.
• Push [^
^^
^] to go to the sub-menu level.
• Push [

] to go to 2.7.3 CONV UNIT (conversion unit)
• Push [

] and [

] to find the conversion unit that you will use in the table.
• Push [^
^^
^] to go to the sub-menu level and then [

] and [>
>>
>] to go to the menu item 2.8.1 INPUT
TAB
• Push [>
>>
>] to make the strapping table. Enter the table entry number (01).
• Enter the length value and push [^
^^
^].
• Enter the conversion value and push [^
^^
^].
• Push [>
>>
>] to enter the subsequent table entry number (02, 03, ..., 30).
CAUTION!
If the level for the 20 mA is set in the blocking distance, the device will not be able to use the full
current output range.
Figure 6-5: Level measurement
1 Tank Bottom Offset (2.3.8)
2 Tank Height (2.3.1)
3 Blocking Distance (2.3.2)
4 Maximum effective measuring range
5 20 mA Setting (2.4.4)
6 4mA Setting (2.4.3)
7 Non-measurement zone
CAUTION!
Enter the data in numerical sequence (strapping table entry number 01, 02 etc.).