User's Manual

PL-550 36
PARAMETER DESCRIPTION
P002 material
Optimizes measurement reliability for target type.
entry: 1 = liquids, fluids or flat surfaces
P003 measurement response
Collectively sets a number of operating parameters that determine the
maximum rate of change in target range that the reading and mA
output can keep up to.
If IQ Radar 160 cannot keep up with the rate of level change, select a
faster rate. If the reading bounces around an average value, select a
slower rate. In general, reliability is traded for speed. Noisy applications
or those with agitators tend to be more manageable at slower response
rates, as these make use of filtering, echo verification and longer fail-
safe delay.
Select P003 for a measurement response just faster than the
greater of the maximum filling or emptying rate.
echo verification: discriminates between agitator blades in motion or
spurious noise, and the target surface (true echo).
filter: discriminates between false echoes from constant
acoustical or electrical noise and the target surface.
fail-safe timer: establishes the period from the time a loss of echo
starts until the fail-safe default (P071) is effected.
The P003 preset timer value can be overridden by
P070.
entry:
measurement response echo
verification
filter f-s timer
(P070)
1 = 0.1 m/min slow on on 100
2 = 1 m/min • on on 10
3 = 10 m/min • on on 1
4 = 102 m/min • off on 0.1
5 = 1020 m/min fast off off 0