Parameter assignment
7.26 Algorithm (P820)
SITRANS Probe LR with mA/HART
Operating Instructions, 05/2019, A5E32337711-AC
65
7.25.4
P805 Echo confidence
Measures echo reliability. It displays the echo confidence of the measurement echo from the
last measurement. P804 defines the minimum criterion for echo confidence.
Values (view only)
Range
0 to 99
----
Shot not used
Related parameters
P804 Confidence threshold
Press the measurement key
to get a new reading that will update confidence values.
7.25.5
P806 Echo strength
Displays the absolute strength (in dB above 1
μV rms) of the echo selected as the
measurement echo.
Values (view only)
Range
-20 to 99
Press the measurement key
to get a new reading that will update echo strength.
7.25.6
P807 Noise
Displays the average and peak ambient noise (in dB above 1
μV rms) of a noise profile, as
x.y. Noise level is a combination of transient noise and receiving circuitry.
Values (view only)
Format
x.y x = average y = peak
Range
–20 to 99
Start up display
–15 . – 15
After a measurement, the values from the previous noise shot will be displayed. Press the
measurement key
to get a new reading that will update the noise profile.
7.26
Algorithm (P820)
7.26.1
P820 Echo algorithm
Selects the algorithm to be applied to the echo profile to extract the true echo.
Values
3
Largest echo
4
Reserved
8
Best of Largest or First echo
12 *
First echo
For more clarification on the different options, please contact your local representative.