40 70 00 Instrumentation for Process Systems
40 72 00 Level Measurement
40 72 13 Ultrasonic Level Meters (Continuous and Point-Type) 40 72 23 Radar Level Meters 40 72 26 Laser Level Meters 40 72 29 Nuclear Level Meters 40 72 33 Capacitance Type Level Meters (Continuous and Point Type) 40 72 36 RF Admittance Level Meters (Continuous and Point Type) 40 72 43 Pressure and Differential Pressure Type Level Meters 40 72 46 Bubbler Systems 40 72 53 Magnetic and Magnetostrictive Level Meters 40 72 63 Displacement-Type Level Meters 40 72 73 Sight Level Gauges 40 72 76 Level Switches 40 72 83 Leak Detection Systems