Endress+Hauser Levelflex FMP55 - Protection of the Settings Against Unauthorized Changes

Levelflex FMP55
84 Endress+Hauser
5-point linearity protocol
The following notes must be taken into account if option F4 ("5 point linearity protocol") has
been selected in feature 550 ("Calibration").
The five points of the linearity protocol are evenly distributetd across the measuring range (0% to
100%). In order to define the measuring range, Empty calibration (E) and Full calibration (F) have
to be specified
9)
.
The following restrictions have to be taken into account when defining E and F:
R
A
C
B F
E
A0014673
A Distance from reference point (R) to 100% level
B Measuring range
C Distance from end of probe to 0% level
E Empty calibration
F Full calibration
R Reference point of the measurement
Sensor Minimum distance
between reference point
(R) and 100% level
Minimum measuring
range
FMP55 A ≥ 250 mm (10 in) B ≥ 400 mm (16 in)
Type of probe Minimum distance from
end of probe to 0% level
Maximum value for
"empty calibration"
Rod C ≥ 100 mm (4 in) E ≤ 3.9 m (12.8 ft)
Coax C ≥ 100 mm (4 in) E ≤ 5.9 m (19.4 ft)
Rope C ≥ 1 000 mm (40 in) E ≤ 9 m (29 ft)
• For rod and rope probes the linearity check is performed with the complete device.
• For coax probes the electronics is mounted to a reference rod probe and the linearity check is
performed to this configuration.
• The linearity is checked under reference conditions.
The selected values of Empty calibration and Full calibration are only used to record the
linearity protocol and are reset to their probe specific default values thereafter. If values
different from the default are required, they must be ordered as a customized parametrization
→  85.
9) If E and F are not specified, probe dependent default values will be used instead.