Endress+Hauser PROFIBUS PA Levelflex FMP56, Руководство по эксплуатации

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Levelflex FMP56, FMP57 PROFIBUS PA Mounting
Hauser 11
• The end of the rope probe must be secured (fixed down) under the following conditions:
• If the probe would otherwise temporarily come into contact with the vessel wall, the cone,
internal fittings/beams or another part of the installation
• If the probe comes closer than 0.5 m (1.6 ft) to a concrete wall.
• A female thread is provided in the probe weight to secure the end of the probe:
• Rope 4 mm (1/6"), 316: M 14
• Rope 6 mm (1/4"), 316: M 20
• Rope 6 mm (1/4"), PA>steel: M14
• Rope 8mm (1/3"), PA>steel: M20
• Far higher tensile loads occur on the probe when it is secured (fixed down). Therefore,
preferably use the 6 mm (1/4") rope probe.
• When fixed down, the end of the probe must be either reliably grounded or reliably
insulated. Use an insulated fastening kit if it is not otherwise possible to secure the probe
with a reliably insulated connection.
• To prevent an extremely high tensile load (e.g. due to thermal expansion) and the risk of
the rope breaking, the rope must be slack. Required sag: ≥ 10 mm/(1 m rope length) [ 0.12
in/(1 ft rope length)].
Pay attention to the tensile loading capacity of rope probes.
Securing rod probes
• In the case of WHG approval: a support is required for probe lengths ≥ 3 m (10 ft).
• In general, rod probes must be secured in the event of horizontal flow (e.g. from an
agitator) or strong vibrations.
• Only secure rod probes directly at the end of the probe.