Emerson Process Management 3422 ユーザーズマニュアル
Reference, Installation, and Operations Manual
Miscellaneous equations
3-9000-743 Rev S
June 2013
Miscellaneous conversion factors
295
A
Appendix B Miscellaneous equations
B.1
Miscellaneous conversion factors
K-Factor and Inverse K-Factor
Equation B-1 Frequency Volumetric Flow Rate K-Factor
and
Equation B-2 Frequency Volumetric Flow Rate Inverse K-Factor
where
=
frequency “K-Factor” (pulses/m
3
or pulses/ft
3
) (
Freq1KFactor and
Freq2KFactor)
=
frequency “Inverse K-Factor” (m
3
/pulse or ft
3
/pulse)
(
Freq1InvKFactor and Freq2InvKFactor)
=
frequency full-scale volumetric flow rate (m
3
/h or ft
3
/h)
(
Freq1FullScaleVolFlowRate and Freq2FullScaleVolFlowRate)
=
maximum frequency (Hz = pulses/s) (Either 1000 or 5000 Hz)
(
(
Freq1MaxFrequency and Freq2MaxFrequency)
KFactor
MaxFreq
(
) 3600s hr
⁄
(
)
FreqQ
FullScale
----------------------------------------------------------
=
InvKFactor
FreqQ
FullScale
MaxFreq
(
) 3600s hr
⁄
(
)
----------------------------------------------------------
=
KFactor
InvKFactor
FreqQ
FullScale
MaxFreq