Endress+Hauser Levelflex FMP56 Operating Instructions Manual page 31

Levelflex FMP56, FMP57 HART
Endress+Hauser
Screw the device with the threaded connection into a sleeve or flange and then secure it to
the process vessel via the sleeve/flange.
• When screwing into place, turn by the hex bolt only:
• Thread ¾": 36 mm
• Thread 1½":
• Maximum permissible tightening torque:
• Thread ¾": 45 Nm
• Thread 1½": 450 Nm
• Recommended torque when using the supplied aramid fiber seal and
40 bar (580 psi) pressure (FMP51 only; no seal is supplied for FMP54):
• Thread ¾": 25 Nm
• Thread 1½": 140 Nm
• When installing in metal vessels, ensure there is good metal contact between the
process connection and the vessel.
Mounting devices with a flange
If a seal is used to mount the device, use uncoated metal screws to ensure good electrical
contact between the process flange and the probe flange.
Mounting rope probes
NOTICE
Electrostatic discharge can damage the electronics.
‣
Ground the housing before lowering the rope probe into the vessel.
*
Pay attention to the following when introducing the rope probe into the vessel:
• Uncoil the rope slowly and lower it carefully into the vessel.
• Make sure the rope does not bend or buckle.
• Avoid uncontrolled swinging of the weight, as this could damage internal fittings in the
vessel.
Mounting rope probes in a partially filled silo
If a silo is retrofitted with a Levelflex, it is not always possible to empty the silo. If the
vessel is at least ²/₃ empty, it is possible to mount the rope probe even in a partially
filled silo. In this case, if possible perform a visual inspection after mounting: the rope
should not become tangled or knotted when the silo is emptied. The probe rope must
hang fully extended before an accurate measurement can be performed.
55 mm
*
Installation
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