Endress+Hauser Levelflex M FMP40 Operating Instructions Manual page 51

Levelflex M FMP40 with HART/4...20 mA
Endress+Hauser
Maximum measured error
Typical data under reference operating conditions: DIN EN 61298-2, percentage values in relation
to the span.
Output: Digital
Sum of non-linearity, non- Level (level and interface electronics versions):
repeatability and hysteresis – Measuring range up to 10 m: ±3 mm
– Measuring range >10 m: ±0.03 %
For PA-coated rope probes:
– Measuring range up to 5 m: ±5 mm
– Measuring range > 5 m: ±0.1 %
Interface (only "K" interface measurement electronics
version):
– Measuring range up to 10 m: ±10 mm
Offset/zero point ±4 mm
If the reference conditions are not met, the offset/zero point arising from the mounting situation
may be up to ±12 mm for rod probes. This additional offset/zero point can be compensated for by
entering a correction ("Offset" function (057)) during commissioning.
In the area around the lower probe end, the following measured error occurs for the
level measurement (level and interface electronics version):
rod probe and coax probe
80
60
40
20
0
-20
-40
-60
-80
0 50 100 150
distance from probe end [mm]
If the DC value is less than 7 for rope probes, then measurement is not possible in the area of the
tensioning weight (0 to 250 mm from end of probe; lower blocking distance).
If the thickness of the interface is <60 mm, the interface
can no longer be differentiated from the overall level such
that both output signals are identical.
DC = 2
DC > 7
200 250 300
L00-FMP4xxxx-05-00-00-en-001
Commissioning
Analog
±0.06 %
±0.03 %
rope probe
80
60
40
20
0
-20
-40
-60
-80
0 50 100 150 200
distance from probe end [mm]
L00-FMP4xxxx-05-00-00-en-002
DC > 7
250 300
51