Construction And Function; Construction; Function - Balluff BTL5-A-M P-S32/KA-Serie Betriebsanleitung

BTL5-A/C/E/G _ _ -M _ _ _ _ -P-S32/KA _ _
Micropulse Transducer in a Profile Housing
3

Construction and function

Error signal
100 %
0 %
1)
10 73
Groove
~80
~23
max. 6.7
Fig. 3-1: BTL5... transducer, construction
3.1

Construction

Electrical connection: The electrical connection is made
via a cable or a connector (see Ordering code on page 15).
BTL housing: Aluminum housing containing the
waveguide and processing electronics. The groove on the
top side of the profile marks the start of measuring range.
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 13).
Nominal length: To optimally adapt the transducer to the
application, nominal lengths from 50 mm to 4572 mm are
available.
6 english
Output signal with increasing
characteristic:
Null point End point
Nominal length =
Measuring range
2)
~250 ~250
Mounting clamps with insulating bushes
and ISO 4762 M5x22 cylinder-head screws,
max. tightening torque 2 Nm
1) Unusable area
2) Not included in scope
1)
73
~80
15
3.2

Function

The BTL5 transducer contains the waveguide which is
protected by an aluminum housing. 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 the 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. Depending
on the version, this information is made available as a
voltage or current with rising or falling gradient.
of delivery
2)
BTL5-P-3800-2 magnet
35
50
68