Siemens LU01 ユーザーズマニュアル

7ML19985BE02

SITRANS LU01 – INSTRUCTION MANUAL

Page 61

Use this feature to select the measurement verification process.

If a material agitator (mixer) is used in the vessel monitored, set Echo Lock for maximum 
verification or material agitator to avoid agitator blade detection. Ensure the agitator is 
always ON while the SITRANS LU01 is monitoring the vessel to avoid stationary blade 
detection.

When set for max verification or material agitator, a new measurement outside of the 
Echo Lock Window (P713) must meet the sampling criterion (P712). 

For total lock, Echo Lock Window (P713) is preset to zero 0. The SITRANS LU01 
continuously searches for the best echo according to the algorithm chosen (P820). If the 
selected echo is within the window, the window is then centered about the echo. If not, 
the window widens with each successive shot until the selected echo is within the 
window. The window then returns to its normal width.

When Echo Lock is OFF , the SITRANS LU01 responds immediately to a new 
measurement as restricted by the Max Fill / Empty Rate (P700 / P701); however, 
measurement reliability is affected.

The sampling criterion sets the number of consecutive echoes appearing above or below 

the echo currently locked onto, that must occur before the measurements are validated 

as the new reading (for Echo Lock P711 values: 1 or 2).

0

Off

1

Maximum verification

2

*

Material agitator

3

Total  lock

•

P700 Max Fill Rate

•

P701 Max Empty Rate

•

P712 Echo Lock Sampling

•

P713 Echo Lock Window

•

P820 Algorithm

Range: 1:1 to 99:99
Format: x:y
x = the number of above echoes
y = the number of below echoes

•

P711 Echo Lock

1, max verification

 5:5

2, material agitator

 5:2