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ULTRAFLOW 150 GAS FLOW AND TEMPERATURE MONITOR
4.1.1.1 Flow Velocity Measurement
The root measurement of the Ultraflow 150 is transit time. The difference
between upstream and downstream transit times through the gas stream is directly
proportional to the velocity of the gas stream. From transit time and the following
physical equations the TIE calculates flow velocity. This velocity measurement is
inherently independent of the temperature, density, viscosity, and particulate
concentration since these terms drop out of the simplified equations.
1)
Velocity of Sound from Upstream to Downstream Transducer
2)
Velocity of Sound From Downstream to Upstream Transducer
Where:
Cs
= The Speed of Sound
F
ν
= Flue Gas Velocity
θ
= Transducer Angle to Flow
V
= Velocity of Respective Tone Bursts
3)
Subtract equations 1 & 2:
and solving for F
ν
:
4)
substituting
5)
F
ν
is the Line Average Velocity.
And: t = Transit times of sound between the transducers
L = Distance between the transducers
4-2
Summary of Contents for ULTRAFLOW 150
Page 2: ...DOCUMENT NO 1900 0100 01 REV E ...
Page 24: ...ULTRAFLOW 150 GAS FLOW AND TEMPERATURE MONITOR This page intentionally left blank 4 6 ...
Page 75: ...SECTION 7 0 INSTALLATION This page intentionally left blank 7 7 ...
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Page 85: ...SECTION 8 0 SYSTEM CALIBRATION AND ADJUSTMENT This page intentionally left blank 8 9 ...
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Page 89: ...APPENDIX A SITE SPECIFICATION DATA SHEETS ...
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Page 95: ...APPENDIX B MAINTENANCE CHECK SHEETS ...
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Page 101: ...APPENDIX C SPARE PARTS ...
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Page 106: ...APPENDIX D DRAWINGS ...
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Page 144: ...APPENDIX E ENHANCED SERIAL PORT COMMUNICATION PROTOCOL ...