User Manual

6 OPERATION
76
OPTIWAVE 7400-24 C
www.krohne.com 12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
• Subtract the distance to the reflection from the true tank height.
• Go to Supervisor > Advanced Setup > Installation Setup > Tank Bottom Offset
Supervisor > Advanced Setup > Installation Setup > Tank Bottom OffsetSupervisor > Advanced Setup > Installation Setup > Tank Bottom Offset
Supervisor > Advanced Setup > Installation Setup > Tank Bottom Offset.
• Type in the difference you calculated as a negative value.
i A negative value will move the reference point above the tank bottom (as given in menu
item C.1.2 Tank height).
• Push [^
^^
^].
• Push [>
>>
>] and [

] (Esc) at the same time to exit to the "save settings" window.
• Select Save
SaveSave
Save and push [^
^^
^].
i The device will go back to operator mode.
6.5 Status and error messages
6.5.1 Device status (markers)
If the device senses a change in device status, the display screen will show 1 or more status
markers at the bottom right side of the display screen. The display screen will also show a
symbol that agrees with NAMUR Recommendation NE 107 (Self-Monitoring and Diagnosis of
Field Devices) and VDI/VDE 2650. This is shown at the top left side of the display screen. More
data is given if you use PACTware™ software with the appropriate DTM on a PC. Error codes and
data are shown on the device display screen and in the DTM.
Menu item 2.2.2 DIAGNOSTIC (Configuration mode / Supervisor menu) supplies more data. This
includes internal voltages, the loop current and the reset counter (watchdog timer). You can see
this data on the device display screen and in the DTM.
INFORMATION!
For more data on menu items, refer to Function description on page 60
– table 2: Supervisor.
Figure 6-8: Status markers
1 Device status (NAMUR NE 107 symbols)
2 Symbol: Failure
3 Symbol: Function check
4 Symbol: Out of specification
5 Symbol: Maintenance
6 Status marker line (marker 3 is shown)
7 When the status marker is on, a number is shown