Performance Characteristics; Reference Operating Conditions; Maximum Measured Error - Endress+Hauser Levelflex M FMP41C Technical Information

Levelflex M FMP41C, FMP45
Reference operating
conditions

Maximum measured error

Endress+Hauser

Performance characteristics

• Temperature = +68°F (20°C) ± 9°F (5°C)
• Pressure = 14.7 pisa (1013 mbar abs.) ± 0.3 psi (20 mbar)
• Relative humidity (air) = 65% ± 20%
• Reflection factor 0.8 (surface of water for coax probe, metal plate for rod and cable probe with min. 3 ft /
1 m ∅)
• Flange for rod or cable probe ≥ 12" (30 cm ∅)
• Distance to obstructions ≥ 3 ft (1 m)
Typical statements for reference conditions:
DIN EN 61298-2, percentage of the span.
Output: digital
Sum of non-linearity, measurig range FMP41C:
non-repeatability – up to 33 ft (10 m): ± 0.20" (5 mm)
and hysteresis – > 33 ft (10 m): ± 0.05 %
measurig range FMP45:
– up to 33 ft (10 m): ± 0.12" (3 mm)
– > 33 ft (10 m): ± 0.03 %
FMP45 with coax probe:
– ± 0.20" (5 mm)
Offset / Zero ± 0.16" (4 mm)
If the reference conditions are not met, the offset/zero arising from the mounting situation may be up to
± 0.47" (12 mm). This additional offset/zero can be compensated for by entering a correction ("offset"
function) during commissioning.
Differing from this , the following measuring error is present in the vicinity of the probe end:
Rod probe and coax probe
Sum of non-linearity,
non-repeatability, and
hysteresis in inches (mm)
3.15 (80)
2.36 (60)
1.57 (40)
0.79 (20)
0
-0.79 (-20)
-1.57 (-40)
-2.36 (-60)
-3.15 (-80)
0 1.97 3.94 5.91
(50) (100) (150)
Distance from probe end in inches (mm)
If for cable probes the DC value is less than 7, then measurement is not possible in the area of the straining
weight 0 to 10" (0 to 250 mm) from end of probe; lower blocking distance.
L00-FMP4xxxx-05-00-00-en-001
Sum of non-linearity,
non-repeatability, and
hysteresis in inches (mm)
3.15 (80)
2.36 (60)
DC = 2
1.57 (40)
DC > 7
0.79 (20)
0
-0.79 (-20)
-1.57 (-40)
-2.36 (-60)
-3.15 (-80)
7.87 9.84 11.8
(200) (250) (300)
analog
± 0.06 %
± 0.03 %
Cable probe
DC > 7
0 1.97 3.94 5.91 7.87
(50) (100) (150) (200)
Distance from probe end in inches (mm)
L00-FMP4xxxx-05-00-00-en-002
9.84 11.8
(250) (300)
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