Construction And Function; Construction; Function; Number Of Magnets - Balluff BTL6-U101-M.... -B-S4 series Betriebsanleitung

BTL6-U101-M_ _ _ _ -A/B/Y/Z-S4
Transducer – Rod Style
3

Construction and function

Mounting surface
BTL6-...-S4
12.8
1) Unusable area
2) Not included in scope of delivery
Fig. 3-1: BTL6-... transducer, construction and function
3.1

Construction

Electrical connection: The electrical connection is made
via a connector (see Type code breakdown on page 23).
Housing: Aluminum housing containing the waveguide
and processing electronics.
Mounting thread: We recommend assembling these
transducers on the mounting thread:
– BTL6-...-A/B: M18×1.5
– BTL6-...-Y/Z: 3/4"-16UNF
The transducer with Ø 10.2 mm has an additional thread
at the end of the rod to support larger nominal lengths.
Magnet: Defines the position to be measured on the
waveguide. Magnets are available in various models and
must be ordered separately (see Accessories on
page 21).
Nominal length: To optimally adapt the transducer to the
application, rods with a nominal length from 25 mm to
4572 mm are available.
Damping zone: Area at the end of the rod that cannot be
used for measurements, but which may be passed over.
www.balluff.com
Output signal rising:
Error signal
100 %
0 %
Null point
B: 30-1 mm
Z: 2"-0.04"
Nominal length =
Measuring range
1)
Magnet 2)
Thread size
0.5 Ø 25
B: M18×1.5
Z: 3/4"-16UNF
71 25
Mounting surface
End point
1)
Damping zone
60
A: 30-1 mm
Y: 2"-0.04"
1)
2)
Thread size
A: M18x1.5
Y: 3/4"-16UNF
3.2

Function

The BTL6 transducer contains the waveguide which is
protected by an outer stainless steel tube (rod). A magnet
is moved along the waveguide. This magnet is connected
to the system part whose position is to be determined. The
magnet defines the position to be measured on the
waveguide.
An internally generated INIT pulse interacts with the
magnetic field of the magnet to generate a torsional wave
in the waveguide which propagates at ultrasonic speed.
The component of the torsional wave which arrives at the
end of the waveguide is absorbed in a damping zone to
prevent reflection. The component of the torsional wave
which arrives at the beginning of the waveguide is
converted by a coil into an electrical signal. The travel time
of the wave is used to calculate the position. The
measuring value is output as a 32-bit value with a sign
relative to the null point.
3.3

Number of magnets

Operation is possible with one or two magnets, where the
number can be fixed or flexible (see Magnet Mode on
page 18).
Thread
M4×4/6 deep
45
46
english 7