Balluff BTL7-A/C/E/G5 Serie Manual Del Usuario página 48

BTL7-A/C/E/G5_ _-M_ _ _ _-B/Z-DEX_-K_ _/KA_ _
Micropulse Transducer - Rod Style
4
Installation and connection (continued)
Installing the transducer
NOTICE
Interference in function
Improper installation can compromise the function of the
transducer and result in increased wear.
► Only vertical mounting from above is permitted!
► The mounting surface of the transducer must
make full contact with the supporting surface. A
suitable O-ring must completely seal the bore, i.e.
the countersink for the O-ring must be produced
according to Fig. 4-4.
► Check the suitability of the O-ring (Viton GFLT90) for
the specific application.
► Mounting must be done in a manner where the rod
cannot touch the container wall. Deflection of the
rod to the side, e.g. through flow currents, must
be prevented by a suitable bracket or appropriate
positioning in the tank.
► If the device rod is to be used in zone 0, a potential
difference between system parts resulting from
electrostatic charging must be prevented. The float
is thus designed in a manner where it tilts if installed
properly and always maintains contact with the rod.
This feature may not be impaired by the manner of
installation.
► The relevant Ex regulations must be observed to
ensure safe separation between zone 0 and zone 1.
► When tightening the transducer, a torque of 50 Nm
may not be exceeded.
► Mechanical loads may not be placed on the weld
seam at the end of the rod!
1. Make a mounting hole with thread (and countersink for
O-ring, if necessary) in accordance with Fig. 4-4.
2. Screw the transducer with mounting thread into the
mounting hole (max. torque 50 Nm).
12 english
Ignition protection "d"
Flameproof enclosure
Zone 1
Separating area
Zone 0
Spacer tube,
1.4301
Cotter pin,
DIN 94 – 3.2 × 20 – 1.4301
Fig. 4-5: Transducer installation, application 2: fill level measurement
Zone carryover:
If the device rod is to be used in zone 0, a potential
difference between system parts resulting from
electrostatic charging must be prevented. The float is thus
designed in a manner where it tilts if installed properly and
always maintains contact with the rod. This feature may
not be impaired by the manner of installation. The relevant
Ex regulations must be observed to ensure safe separation
between zone 0 and zone 1.
Adjustment aids may not be used in explosive
areas and must be removed before
recommencing normal operation of the
transducer.
Immersion depth S
S
of the float (see
Accessories)