40.70.00 Instrumentation for Process Systems
40.79.00 Miscellaneous Instruments, Calibration Equipment, Instrument Valves, and Fittings
40.79.13 Nuclear Mass-Measuring Scales 40.79.23 Instrument Calibration Equipment 40.79.26 Instrument Programming Equipment 40.79.33 Current-to-Pressure Converters 40.79.36 Voltage-to-Pressure Converters 40.79.39 Signal Conditioners and Converters 40.79.43 Deadweight Testers 40.79.46 Flame Scanners 40.79.63 Instrument Tubing 40.79.66 Instrument Valve Manifolds, Valves, and Fittings