Balluff MICROPULSE BTL7-A/E1 0-M Series, Manual, Page: 32 / 120

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4.1 Installation guidelines
Non-magnetizable material
Magnet
Non-magnetizable material
1) Min. Ø D2 = Minimum diameter of the bore (see Tab. 4-1)
Fig. 4-1: Installation variant in non-magnetizable material
Magnetizable material
If using magnetizable material, the transducer must be
protected against magnetic interference through suitable
measures (e.g. spacer ring made of non-magnetizable
material, a suitable distance from strong external magnetic
fields).
Spacer ring made of non-magnetizable
material
Magnet
min.
Ø D2
1)
Spacer ring made of non-magnetizable
material
Magnet
1)
Min. Ø D2 = Minimum diameter of the bore (see Tab. 4-1)
Fig. 4-2: Installation in magnetizable material
Rod diameter Bore diameter D2
10.2 mm At least 13 mm
8 mm At least 11 mm
Tab. 4-1: Bore diameter if installed in a hydraulic cylinder
4.2 Preparing for installation
Installation note: We recommend using non-
magnetizable material to mount the transducer and
magnet.
Horizontal assembly: For horizontal assembly with
nominal lengths > 500 mm, support the rod and tighten it
at the end if necessary (only possible with a diameter of
10.2 mm).
Hydraulic cylinder: If installed in a hydraulic cylinder,
ensure that the minimum value for the bore diameter of the
support piston is complied with (see Tab. 4-1).
Fitting bore: The mounting surface of the BTL housing
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 in
accordance with Fig. 4-3.
Fig. 4-3: Fitting bore for installing the BTL with O-ring
Magnet:
Various magnets are available for the BTL7
transducer (see Accessories on page 21).
4
Installation and connection
Fitting bore
Countersink for
O-ring 15.4×2.1
BTL7-A/E1 _ 0-M _ _ _ _ -K(8)-SA262-K _ _ /F _ _
Micropulse Transducer - Rod Style