UFC 3 -430-11
14 February 2001
5-2.7.4
Capacitance Level..................................................................... 5-3
5-2.8
Flow Instruments ....................................................................... 5-4
5-2.8.1
Meter Runs ................................................................................. 5-4
5-2.8.1.1
Requirements ............................................................................. 5-4
5-2.8.1.2
Straightening Vanes .................................................................. 5-4
5-2.8.1.3
Fabrication.................................................................................. 5-4
5-2.8.2
Orifice Plates .............................................................................. 5-4
5-2.8.2.1
Design ......................................................................................... 5-5
5-2.8.2.2
Mounting ..................................................................................... 5-5
5-2.8.2.3
Construction ............................................................................... 5-5
5-2.8.3
Flow Nozzles .............................................................................. 5-5
5-2.8.4
Venturi Tubes ............................................................................. 5-5
5-2.8.5
Elbow Meters ............................................................................. 5-6
5.2.8.6
Pitot Tubes ................................................................................. 5-6
5-2.8.7
Rotometers ................................................................................. 5-6
5-2.8.8
Magnetic Flowmeters ................................................................ 5-6
5-2.8.9
Positive Displacement Meters ................................................. 5-6
5-2.8.10
Turbine Meters ........................................................................... 5-6
5-2.8.11
Vortex Meters ............................................................................. 5-6
5-2.8.12
Annubar Meters ......................................................................... 5-6
5-2.9
Temperature Measurements ................................................... 5-6
5-2.9.1
Thermowells ............................................................................... 5-7
5-2.9.2
Thermocouples .......................................................................... 5-7
5-2.9.3
Resistance -Temperature Detectors ....................................... 5-7
5-2.9.4
Filled Bulb Systems .................................................................. 5-7
5-2.9.5
Bimetallic Thermometers ......................................................... 5-7
5-2.10
Pressure Measurements .......................................................... 5-7
5-2.10.1
Gauges........................................................................................ 5-8
5-2.10.2
Switches...................................................................................... 5-8
5-2.10.3
Transmitters ............................................................................... 5-8
5-2.10.4
Draft ............................................................................................. 5-8
5-2.11
Electronic Transmitters ............................................................. 5-8
5-2.12
Electrical Instrument Switches ................................................ 5-9
5-2.13
Analyzers .................................................................................... 5-9
5-2.13.1
General Guidelines ................................................................... 5-9
5-2.13.1.1
Calibration .................................................................................. 5-9
5-2.13.1.2
Application .................................................................................. 5-9
5-2.13.1.3
Packaging ................................................................................... 5-9
5-2.13.2
Oxygen Analyzer .......................................................................5-10
5-2.13.3
Combustibles Analyzer.............................................................5-10
5-2.13.3.1
Carbon Monoxide Analyzer .....................................................5-10
5-2.13.3.2
Hydrogen Analyzer ....................................................................5-10
5-2.13.4
Stack Opacity Analyzer ............................................................5-10
5-2.13.5
Conductivity Analyzer ...............................................................5-11
5-2.13.6
Methane Analyzer .....................................................................5-11
5-2.14
Flame Detectors ........................................................................5-11
5-2.15
Continuous Emission Monitoring (CEM) ................................5-11
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