Siemens SITRANS LR 300, Instruction Manual, Page: 77 / 140

7ML19985CL02 SITRANS LR 300 – INSTRUCTION MANUAL Page 75
mmm
mm
Pa
ra
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ete
rs
P801 Range Extension (F = 5%)
Sets the amount of range extension as measured from the empty distance (P006) and
extending beyond the measurement range. See Blanking on page 46.
Enter the value as a percentage of P006. The distance below empty is not blanked.
For tanks with conical or parabolic bottoms, increase this parameter to ensure that an
empty tank reads empty.
P804 Confidence Threshold (F = 5)
Sets the minimum echo confidence that the echo must meet in order to prevent a loss of
echo condition and the expiration of the Fail-Safe timer (P070).
P805 Echo Confidence
Measures echo reliability.
Press the measurement key to get a new reading that will update confidence
values.
P806 Echo Strength
Displays the strength of the selected echo, in dB above 1 µV rms.
Press the measurement key to get a new reading that will update echo strength.
P807 Noise
Displays the average and peak ambient noise (in dB above 1 µV
#see P806
RMS) being
processed.
Press the measurement key to get a noise reading. The noise level is a combination
of transient noise and electrical noise (receiving circuitry).
Values
Range:
0 to 99
%
Pre-set: 5%
Values
Range: 0 to 99
Pre-set: 5
Related Parameters
P070 Fail-Safe Timer
Values (view only)
Display:
0 to 99
Related Parameters
P804 Confidence Threshold
Values (view only)
Display:
–20 to 99
Values (view only)
x = average (–20 to 99)
y = peak (–20 to 99)
SITRANS LR 300.book Page 75 Monday, June 10, 2002 7:18 PM