industry 4. 0 Industrial sensors distance measurement flow measurement fiber optic pressure sensors inductive sensor proximity switch level sensors rotary encoder temperature measurement technology safety switch temperature switch inductive proximity switch proximity sensor flow sensors speed sensor forked light barrier laser scanner light scanner signal lights flow monitor inductive sensors pt100 sensor ultrasonic flow sensor distance sensor capacitive sensors capacitive proximity switch optical sensors pt1000 sensor magnetic sensors AS interface through-beam sensor magnetic inductive flow meter position switch flow sensor air incremental rotary sensor isolation monitor magnetic field sensor differential pressure measurement capacitive level measurement laser sensor position sensor rfid antenna flow switch water valve control position sensors laser sensors flow meter ultrasonic rfid sensors