Mounting Requirements; Suitable Mounting Position - Endress+Hauser Levelflex FMP50 Operating Instructions Manual

Levelflex FMP50
Endress+Hauser
6.2

Mounting requirements

6.2.1

Suitable mounting position

1
A
C
Mounting distances
• Distance (A) between wall and rod or rope probe:
– for smooth metallic walls: > 50 mm (2")
– for plastic walls: > 300 mm (12") mm to metallic parts outside the vessel
– for concrete walls: > 500 mm (20") , otherwise the available measuring range may be
reduced.
• Distance (B) between rod or rope probe and internal fittings in the vessel: > 300 mm (12")
• Distance (C) from end of probe to bottom of the vessel:
– Rope probe: > 150 mm (6 in)
– Rod probe: > 10 mm (0.4 in)
Additional conditions
• When mounting in the open, a weather protection cover (1) may be installed to protect the
device against extreme weather conditions.
• In metallic vessels: Preferably do not mount the probe in the center of the vessel (2), as this
would lead to increased interference echoes.
If a central mounting position can not be avoided, it is crucial to perform an interference echo
suppresion(mapping) after the commissioning of the device.
• Do not mount the probe in the filling curtain (3).
• Avoid buckling the rope probe during installation or operation (e.g. through product movement
against silo wall) by selecting a suitable mounting location.
With suspended rope probes (probe end not fixed at the bottom) the distance between the
probe rope and internal fittings in the tank must not fall below 300 mm (12") during the
entire process. A sporadic contact between the probe weight and the cone of the vessel,
however, does not influence the measurement as long as the dielectric constant of the
medium is at least DC = 1.8.
2 3
4
Mounting
B
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