Siemens SITRANS LR 300 Instruction Manual page 77

P801 Range Extension
Sets the amount of range extension as measured from the empty distance (P006) and
extending beyond the measurement range. See Blanking on page 46.
Values
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
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).
Values
Related Parameters
P805 Echo Confidence
Measures echo reliability.
Press the measurement key
values.
Values (view only)
Related Parameters
P806 Echo Strength
Displays the strength of the selected echo, in dB above 1 µV rms.
Press the measurement key
Values (view only)
P807 Noise
Displays the average and peak ambient noise (in dB above 1 µV
processed.
Press the measurement key
of transient noise and electrical noise (receiving circuitry).
Values (view only)
7ML19985CL02
(F = 5%)
0 to 99
Range:
Pre-set: 5%
Range: 0 to 99
Pre-set: 5
P070 Fail-Safe Timer
to get a new reading that will update confidence
0 to 99
Display:
P804 Confidence Threshold
to get a new reading that will update echo strength.
–20 to 99
Display:
to get a noise reading. The noise level is a combination
x = average (–20 to 99)
y = peak (–20 to 99)
SITRANS LR 300 – INSTRUCTION MANUAL
%
(F = 5)
#see P806
RMS) being
Page 75