Endress+Hauser Levelflex FMP55 - Electrical Connection; Connection Conditions

Levelflex FMP55
Endress+Hauser 37
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 (water surface for coax probe, metal plate for rod and rope probe with min.
1 m (40 in) diameter)
• Flange for rod or rope probe ≥ 300 mm (12 in) diameter
• Distance to obstacles ≥ 1 m (40 in)
• For interface measurement:
– Coax probe
– DC of the lower medium = 80 (water)
– DC of the upper medium = 2 (oil)
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, nonrepeatability
and hysteresis)
2)
Level measurement:
Measuring distance up to 10 m (33 ft): ±2 mm (±0.08 in)
±0.02 %
Interface measurement:
• Measuring distance up to 500 mm (19.7 in):
±20 mm (±0.79 in)
• Measuring distance > 500 mm (19.7 in): ±10 mm (±0.39 in)
• If the thickness of the upper medium is < 100 mm (3.94 in):
±40 mm (±1.57 in)
Non-repeatability
3)
≤ 1 mm (0.04 in)
1) Add error of the analogous value to the digital value.
2) If the reference conditions are not met, the offset/zero point arising from the mounting conditions may be
up to ±16 mm (±0.63 in). This additional offset/zero point can be compensated for by entering a
correction (parameter "level correction") during commissioning.
3) The non-repeatability is already considered in the accuracy.
Differing from this, the following measuring error is present in the vicinity 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
 19 Measuring error at the end-of-probe for rod and coax probes
A Distance from probe end [mm(in)]
D Measuring error: Sum of non-linearity, non-repeatability and hysteresis