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The  ULS10  is  a  non-contact level  measurement  sensor generating  ultrasonic  pulses, which  are  reflected  and received  from  the  liquid surface.  The  time  between emission  and  return  is proportional  to  the  distance between  the  fluid  surface and  the  sensor.  The  depth of  the  fluid  is  calculated  by a  microprocessor  after  the reference  level  L0  is determined.  Automatic temperature  compensation is also featured allowing the 
sensor  to  automatically adjust  to  the  dynamics  of the system.
The  information  for  the measured fluid level is then transferred  to  a  current signal  output  and  RS485 

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