P-81 confidence threshold for short measurement
minimum echo confidence for echoes within 1 meter of transducer.
If echoes are beyond 1 meter or have a confidence under the
threshold level, the short measurement will be ignored and the long
measurements will become valid.
Enter threshold. ( F = 10 )
Typical usage; if transducer were picking up small unwanted echoes
from close in, increase threshold to a value above that of the echo
confidence ( P-80 ) so that close in echoes are no longer detected.
P-82 confidence threshold for long measurement
minimum echo confidence for long measurements. If no echo
confidences meet this threshold, a loss of echo condition will prevail.
Enter threshold. ( F = 5 )
Typical usage; during filling of vessel, material intersects beam path.
Instead of displaying wrong level, increasing threshold to a value
above that of the echo confidence ( P-80 ) will force the
MultiRanger Plus into fail-safe.
P-83 echo strength ( v )
displays the absolute strength of the selected echo
in dB above 1 uV rms
P-84 noise
average and peak ambient noise, in dB above 1 uV rms
Ambient noise includes acoustical and electrical noise being picked
up by the transducer / receiver circuit when the transmit / receive
cycles have been disabled during the program mode.
LCD display
average
peak
PL-443 7 – 22
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