Siemens SITRANS LG250 Operating Instructions Manual page 30

Setup - Application - Gas
phase
Setup - Application - Di-
electric constant
Setup - Max. adjustment
Level
30
Dielectric con- Type of medium
stant
> 10 Water-based liq-
uids
3 ... 10 Chemical mix-
tures
< 3 Hydrocarbons
This menu item is only available, if you have chosen interface meas-
urement under the menu item "Application". In this menu item you can
enter if there is a superimposed gas phase in your application.
Only set the function to "Yes", if the gas phase is permanently pre-
sent.
This menu item is only available if you have selected interface meas-
urement under the menu item "Application". In this menu item you can
choose the type of medium of the upper medium.
You can enter the dielectric constant of the upper medium directly or
have the value determined by the instrument. To do this you have to
enter the measured or known distance to the interface.
In this menu item you can enter the max. adjustment for the level. With
interface measurement this is the maximum total level.
Adjust the requested percentage value with [+] and store with [OK].
Enter the appropriate distance value in m (corresponding to the
percentage value) for the full vessel. The distance refers to the sensor
reference plane (seal surface of the process fitting). Keep in mind that
the max. level must lie below the dead band.
SITRANS LG250 - Operating Instructions
Examples
Acids, alcalis, water
Chlorobenzene, nitro lacquer, aniline,
isocyanate, chloroform
Solvents, oils, liquid gas
PBD-51041056