User's Manual

PL-611 IQ Radar 300 Page 71
Parameters
Parameters Parameters
Parameters
P711 Echo Lock
Selects the measurement verification process.
0
off
1
maximum verification
2
material agitator
Values
3
total lock
Related Parameters
• P700 Maximum Fill Rate
• P701 Maximum Empty Rate
• P712 Echo Lock Sampling
• P713 Echo Lock Window
• P820 Algorithm
If a material agitator (mixer) is used in the vessel monitored, set Echo Lock to 1
11
1
(maximum verification) or 2
22
2 (material agitator) to avoid agitator blade detection. To avoid
stationary blade detection, ensure the agitator is always ON while the IQ 300 is
monitoring the vessel.
When set for 1 (maximum verification) or 2 (material agitator), a new measurement
outside of the Echo Lock Window (P713) must meet the sampling criterion (P712).
For 3 (total lock), Echo Lock Window (P713) is pre-set to 0 (zero). The IQ 300 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 0 (off) the IQ 300 responds immediately to a new measurement, as
restricted by the Max Fill/Empty Rate (P700/P701). However, measurement reliability is
affected.
P712 Echo Lock Sampling
Sets the number of consecutive echoes appearing above or below the echo currently
locked onto. Sampling ratio must occur before the measurements are validated as the
new reading (for Echo Lock P711 values: 1 or 2).
Range: 1:1 to 99:99
Values
Format: x:y
• x = the number of above echoes
• y = the number of below echoes
Related Parameter
• P711 Echo Lock
P711 value P712 pre-set value
1: max verification 5:5
2: material agitator 5:2