The  area  light  barrier  LT-FLLS  creates  a  parallel  laser  line  that  is  2  mm  thick  and  35 mm  in  length.  Particles,  positions  and  dimensions  can  be  recognized  within  this  area.
The  maximum  distance  between  transmitter  and  coupling  of  approximately  10%  of  the laser  power.  This  beam  is  constantly  compared  to  the  measured  value,  enabling  a  very consistent measurement even with power or temperature fl uctuations. When used for particle recognition parts greater than 20 µm can be detected and quantifi  ed safely.

Typical  applications  include  air  control  or  lint  detection  in  textile  machines.  When  used for  position  measurement  an  output  voltage  of  0  to  10  V  is  supplied  depending  on  the covering  of  the  35  mm  wide  laser  band.  Applications  include  speed  measurement, positioning of objects and reduction of incoming speed.If an object  is  located within  the  light band,  it  is possible  to calculate  its size by  the amount of  light  that  reaches  the detector. This mode of operation  is  recommended  for quality control (sorting the good from the bad) and for wire and thread breakage ontrol. The power of the used laser is 1 mW (laser class 2), the wavelength is 650 nm. The measuring frequency is 10 kHz, the sensitivity is 20 µm.

TYPICAL APPLICATIONS:

• control of air quality
• single barrier speed measurement
• lint recognition on knitting machines and
• good/bad parts selection
• weaving looms
• wire and thread breakage control
• positioning of parts
• size measurement