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Operating instructions: 11109132 09 EN Page 2 / 20
Mounting
Operating instructions
CleverLevel switch, LFFS
Please refer to “Accessories” data sheet. The welding part has
an engraved mark or a leak hole. When the product has been
mounted and correctly tightened the gland or M12 plug will
align with this mark.
Make sure that the gland/plug is pointing downwards to pre-
vent fluids from penetrating into the instrument.
Use only the authorised special designed accessories. The
product warranty is void when installed with other adapters.
Do not use PTFE, fibre or other gaskets. The PEEK tip against
the stainless steel welding part will perform a hygienic tighten-
ing provided that the guidelines have been followed.
Due to the measuring principle it is essential that the sensor tip
can “see” an ample amount of the metal shaft or welding part.
Dimensions
Mounting instructions for sliding connection:
1) Clean the sliding shaft.
2) Mount the smallest ring against the media as indicated.
3) Tighten the G1/2 Hygienic sliding nipple at 25...30 Nm.
4) Replace the Washer ring kit when one or both parts are
permanently deformed or stick to the shaft of the sliding
connection.
The Level Switch LFFS with sliding connection can be mounted
in installations with a static pressure up to 16 bar.
To prevent personal injuries or property damage it is essential
that the safety wire is mounted correctly and is undamaged.
WARNING
Compression ring kit
ZPX1-006 for sliding
version
G 1/2 A hygienic sliding connection
BHC 3A DN38 hygienic
G 1/2 A hygienic
Measuring principle
An electrode inside the sensor tip builds a capacitor together with the sur-
roundings. The medium with its dielectric constant (DC value) is defining
the capacitance value. A resonance circuit is created in combination with a
coil in the sensor head. Switching signal tripping is according to the meas-
ured resonance frequency and the programmed trigger thresholds.
