safety system , photoswitch , local sensor , pressure transducer , sanitary pressure transmitter , pressure gauge , hthp pressure sensor , drain current sensor , direct measurement sensor , electric quantity sensor , low current sensor , underwater acoustic transducer , ultrasonic sensor , air flow meter , air flow sensor , transmitter , gas flow sensor , o2 sensor , heated oxygen sensor , linear displacement sensor , laser position sensor , temperature transducer , ptc sensor , mechanical thermometer ,