Siemens SITRANS LR 400 Instruction Manual page 40

If the display does not follow the level height continuously but in abrupt jumps, you should
choose a higher filling speed. If multiple echoes are indicated during filling/emptying a
vessel, select a lower filling speed. In the case of very low filling speeds (a few mm/min)
switch off Parameter 4.2.3.3. If different filling/emptying speeds occur, select the higher
speed.
4.2.2.7: Failsafe Level (F = Hold Continuously)
Selects the default measurement in the event that the failsafe timer expires
Values
4.2.2.8: Failsafe Timer (F = 10 min)
Sets the time delay, in minutes, before entering failsafe level.
Values
The failsafe timer will begin when there is a loss of echo condition. This loss of echo
condition will occur when there is no signal avaliable above the Auto False Echo
Suppression threshold as defined in Parameter 4.2.3.9.
4.2.2.9: Range Extension (F = 3 m)
Sets the distance below the vessel height included in the evaluation
Values
4.2.3: Sensor Parameter
Here you can view and change the sensor parameters which you have selected
according to parameter 4.2.2.
Note:
The factory settings for the user vessels are not editable.
Page 36 SITRANS LR 400 – INSTRUCTION MANUAL DRAFT
100 %
0 %
Hold Continuously
1 min
2 min, etc.
numerical
7ML19985FH01