Siemens sitrans LR 400 Instruction Manual page 43

the measuring medium's surface, as well as the distances of fixed targets. These echoes
may be directly used and transferred to the fix distance list.
4.2.3.5: Tank Empty Detect (for qualified personnel only)
This parameter is for Factory Authorized Personnel only.
4.2.3.6: Auto Fix Distance (for qualified personnel only)
This parameter is for Factory Authorized Personnel only.
4.2.3.7: Fix Distance List (for qualified personnel only)
This parameter is for Factory Authorized Personnel only.
4.2.3.7.1 to 4.2.3.7.9: Fix Distance Values (for qualified personnel only)
These parameters are for Factory Authorized Personnel only
4.2.3.8: Auto False-Echo Suppression (F = Use)
Learns and records the current signal up to the suppression distance setting. These
signals are then ignored during operation.
First, when the level is low, dip the tank to determine the exact distance to the
material. Then, set Auto False-Echo Suppression Distance (4.2.3.9) to 2 meters
shorter than this dipped distance.
This function works best when the vessel is nearly empty. For best results, do
Note:
not record or learn when the vessel is completely empty.
Value
If all signals fall below this defined threshold, then the failsafe timer is initiated.
4.2.3.9: Auto False-Echo Suppression Distance (F = 2/3 tank height)
Defines the end point of the auto false echo suppression distance.
Value
Page 40 SITRANS LR 400 (Solids) – INSTRUCTION MANUAL
Off
Record
Use
variable to maximum range
7ML19985JC02