40 72 00 Level Measurement
40 72 46 Bubbler Systems
40 72 13Ultrasonic Level Meters (Continuous and Point-Type)40 72 23Radar Level Meters40 72 26Laser Level Meters40 72 29Nuclear Level Meters40 72 33Capacitance Type Level Meters (Continuous and Point Type)40 72 36RF Admittance Level Meters (Continuous and Point Type)40 72 43Pressure and Differential Pressure Type Level Meters40 72 46Bubbler Systems40 72 53Magnetic and Magnetostrictive Level Meters40 72 63Displacement-Type Level Meters40 72 73Sight Level Gauges40 72 76Level Switches40 72 83Leak Detection Systems