Levelflex FMP53
Endress+Hauser 33
Performance characteristics
Reference operating
conditions
• Temperature = +24 °C (+75 °F) ±5 °C (±9 °F)
• Pressure = 960 mbar abs. (14 psia) ±100 mbar (±1.45 psi)
• Humidity = 60 % ±15 %
• Reflection factor ≥ 0.8 (metal plate for rod probe with min. 1 m (40 in) diameter)
• Flange for rod probe ≥ 300 mm (12 in) diameter
• Distance to obstacles ≥ 1 m (40 in)
Reference accuracy
Typical data under reference operating conditions: DIN EN IEC 61298-2 / DIN EN IEC 60770-1;
percentage values in relation to the span.
Output: digital analog
1)
Accuracy (sum of non-
linearity, non-repeatability
and hysteresis)
2)
±2 mm (±0.08 in) ±0.02 %
Non-repeatability
3)
≤1 mm (0.04 in)
1) Add error of the analog value to the digital value.
2) If the reference conditions are not met, the offset/zero point resulting from the installation conditions can
be up to ±16 mm (±0.63 in). This additional offset/zero point can be compensated for by entering a
correction ("Level correction" parameter) during commissioning.
3) The non-repeatability is already considered in the accuracy.
Differing from this, the following measured error applies in the area of the lower probe end:
-80 (-3.15)
-60 (-2.36)
-40 (-1.57)
-20 (-0.79)
0
20 (0.79)
40 (1.57)
60 (2.36)
80 (3.15)
0
A
D
DC = 2
DC = 80
50 (1.97)
100 (3.94)
150 (5.91)
200 (7.87)
40 (1.57)
80 (3.15)
20 (0.79)
250 (9.84)
300 (11.8)
A0021480
20 Measured error at the probe end for rod and coax probes
A Distance from the probe end [mm(in)]
D Measured error: Sum of non-linearity, non-repeatability and hysteresis
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