Endress+Hauser Profi Bus Levelflex M FMP40 Operating Instructions Manual page 27

Levelflex M FMP40 PROFIBUS PA
"
Endress+Hauser
3.4.9 Notes on special installation situations
Welding the probe into the vessel
Caution!
Before welding the probe into the vessel, it must be grounded by a low-resistive connection. If this
is not possible, the electronics as well as the HF module must be disconnected. Otherwise the
electronics may be damaged.
Fixing rope probe
• The end of the probe needs to be secured if
the probe would otherwise touch the silo
wall, the cone or another part, or the probe
comes closer than 0.5 m to a concrete wall.
This is what the internal thread in the probe
weight is intended for:
– 4 mm rope: M14
– 6 mm rope: M20
• Preferably use the 6 mm rope probe due to the
higher tensile strength when fixing a rope
probe.
• The fixing must be either reliably grounded or
reliably insulated ("Accessories", → ä 86)! If
it is not possible to mount the probe weight
with a safe earthed connection, it can be
secured using an isolated eyelet, which is
available as an accessory (→ ä 91).
• In order to prevent an extremely high tensile
load and the risk of rope crack, the rope has to
be slack. Make the rope longer than the
required measuring range such that there is a
sag in the middle of the rope that is ≥ 1cm/m
of the rope length.
Reliable, earthed mounting
sag of the rope:
≥
1cm/m of the rope
length
Reliable, isolated mounting
Mounting and
contact with a
bolt
4mm-rope: M14
6mm-rope: M20
Mounting
L00-FMP4xxxx-17-00-00-de-019
Mounting-kit isolated
(see accessories)
L00-FMP4xxxx-17-00-00-en-027
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