Construction And Function; Construction; Function - Balluff BTL5-A/C/E1-M-SF-F Serie Manual De Instrucciones

BTL5-A/C/E1_ -M _ _ _ _ -SF-F _ _
Micropulse Transducer - Rod Style
3

Construction and function

Output with falling gradient
Output with rising gradient
BTL housing
70.5
Fig. 3-1: BTL5...-SF-F... transducer, construction
3.1

Construction

Electrical connection: The electrical connection is made
via a cable and permanent (see Type code breakdown on
page 14).
BTL housing: Stainless steel housing containing the
processing electronics.
Float: Defines the position to be measured on the
waveguide. Floats must be ordered separately (see
Accessories on page 12).
Nominal length: Defines the available measuring range.
Rods with various nominal stroke lengths from 50 mm to
2500 mm are available depending on the version.
6 english
100 %
0 %
100 % 0 %
0 %
Tank full
Float 1)
BTL-S-3112-4Z
2
Nominal length = measuring range
48.8
Tank empty
69
3.2

Function

The BTL5 transducer contains the waveguide which is
protected by an outer stainless steel tube (rod). A float is
moved along the waveguide. This float also rises and falls
with the level of the liquid whose position is to be
determined.
The float defines the position to be measured on the
waveguide.
An internally generated INIT pulse interacts with the
magnetic field of the float 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 output with a rising or falling gradient.
Cotter pin
1)
82
1) Not included in scope of delivery