ULTRASONIC POSITION SENSOR, FOR PRESSURE VESSELS Ø200/229, MEASUREMENT FREQUENCY MAX. 155HZ, STATIC REPEATIBILITY ±1MM (MEASURING FROM THE CENTER OF THE SENSOR), POWER SUPPLY 18 TO 30 VDC, SERIAL INTERFACE FOR COMMUNICATION AND SYNCHRONIZATION, M12 CONNECTOR, NPN OR PNP OUTPUT (MAX. 60MA, MAX. 30VDC), DEGREE OF PROTECTION IP-67 . REFERENCE MODELS: MANUFACTURERS: SONOTEC / ROTH HYDRAULICS MODEL: SONOCONTROL 14 BF1, MANUFACTURER CODE (REXROTH): 4204038360.