Function And Characteristics; Characteristics; Function; Available Stroke Lengths And Magnets - Balluff BTL5-P1-M-B/Z-DEX-K/KA Serie Manual De Instrucciones

BTL5-P1-M_ _ _ _-B/Z-DEX_-K_ _/KA_ _
Micropulse Transducer - Rod Style
2

Function and characteristics

2.1

Characteristics

Micropulse transducers are char-
acterized by:
– Very high resolution, repeatabil-
ity, and linearity
– Insensitive to shock, vibration,
contamination, and noise
Absolute output signal
–
– Wear- and maintenance-free
measuring principle
Cable length between trans-
–
ducer and controller up to
500 m
Pressure rated to 350 bar when
–
installed in hydraulic cylinder
(Zone 1)
– Protected to IP 67 per
IEC 60529.
2.2

Function

The transducer contains a wave-
guide enclosed by an outer stain-
less steel rod. A magnet attached to
the moving member of the machine
or to the cylinder piston is moved
over the rod and its position con-
3

Installation

Ø 5 for hook-
spanner Ø 65,
tightening torque
max. 50 Nm
BTL5...DEXB-KA_ _
axial
connection
BTL5...DEXB-K_ _
radial
connection
Fig. 3-1: BTL5...B/Z..., transducer dimensions
4
english
stantly updated.The magnet ring
must remain within the measuring
range.
The magnet defines the measured
position on the waveguide. An exter-
nally generated INIT pulse interacts
with the magnetic field of the magnet
to generate a magnetostrictive tor-
sional wave in the waveguide which
propagates at ultrasonic speed.
The torsional wave arriving at the
end of the waveguide is absorbed in
the damping zone. The wave arriv-
ing at the beginning of the wave-
guide creates an electrical signal in
the coil surrounding the waveguide.
The propagation time of the wave is
used to determine the position
which is output as digital informa-
tion. This takes place with high pre-
cision and repeatability within the
measuring range indicated as the
nominal stroke length.
The electrical connection between
the transducer, the processor/con-
troller and the power supply is via a
fixed cable, which depending on the
B: 30-1
nom. length =
Z: 2"-0.04" measuring range
➀ O-ring Viton
GFLT 90
➁
magnet ring
mounting surface
nom. length =
B: 30-1
measuring range
Z: 2"-0.04"
O-ring Viton
➀
GFLT 90
thread size:
B: M18×1.5
Z: 3/4"-16UNF
Flameproof enclosure
version is either axially or radially
connected.
Dimensions for installing the
Micropulse transducer: ➥ ➥ ➥ ➥ ➥ Fig. 3-1
Dimensions for installing the mag-
net: ➥ ➥ ➥ ➥ ➥ Fig. 3-5
Dimensions for installing the float:
➥ ➥ ➥ ➥ ➥ Figs. 3-7 to 3-10
2.3 Available stroke lengths
and magnets
To ensure flexible application, nomi-
nal transducer stroke lengths of
from 25 to 4000 mm and various
types of magnets are available.
Magnets/floats therefore need to be
ordered separately.
➀
unusuable area
➁
not included
➀
thread
M4 × 4/
6 deep
float
➀
float stop
BTL5...DEXA-KA_ _
damping zone
➀
thread
M4 × 4/
6 deep
➀
float stop
BTL5...DEXA-K_ _
Ignition Class "d"