流量计计重公式

重量/数量鉴定中流量计计重所用公式汇总
1. calculation formula ⑴(1&)NSV GSV BS W =⨯- ⑵PL TL G SV G O V C C =⨯⨯ ⑶av
nom
Pulse G O V M F K F =
⨯
⑷prover m eter
V M F V =
⑸prover base TSP PSP TLP PLP V V C C C C =⨯⨯⨯⨯ ⑹m eter TLM PLM
nom
Pulse V C C K F =
⨯⨯ ⑺()1
1PL e C P P F
=
--⨯
⑻22C D T A B T RHO RHO F e ⨯⎛
⎫+⨯++ ⎪
⎝
⎭=
⑼()10.8T T TL C e αα-⨯∆⨯+⨯⨯∆= ⑽012
K K R H O
R H O
α=
+
⑾()1b PS P P D
C E t
-⨯=+
⨯ ⑿()
()()
111b C oef p
TS
b C oef p i b C oef i T T t
C T T t T T t ---⎧+-⨯⎪=⎨
⎡⎤⎡⎤
+-⨯⨯+-⨯⎪⎣
⎦⎣⎦⎩
⒀260141.5131.5
H O RH O API ρ⨯=
+
2. unit conversion
①3
BBL m
m 3= BBL X C
API60
℃ and 101.325KPa
℉ and 0Psig
②BBL LongTon (US Customary Units)
589.94830.03750.005078960131.5LongTon BBL API ⎛⎫
=⨯⨯- ⎪+⎝⎭
[ P —Internal Prover Pressure ]
[ P e —Base Prover Pressure ]
[ For Uni- and Bi-Directional Prover ] [ For Small V olume (compact) Prover ]
③LongTon MetricTon
1.01605MetricTon LongTon =⨯
④3m M etricTon =
MetricTon=m 3X （ρ
pro －0.0011
）
Weight at Vaccum
Density at actual Temperature
Volume at 20℃ and 101.325Kpa
3.term description
NSV ——Net Standard Volume P ——Average Meter/Prover Pressure GSV ——Gross Standard Volume Pe ——Equilibrium Vapor Pressure BS&W ——Base Sediment and Water D ——Internal Prover Tube Diameter
GOV ——Gross Observed Volume
E ——Modulus of Elasticity for Prover Tube K
F ——Nominal K-Factor, in Pulse per Barrel,
Supplied by the Flow Transmitter
t ——Wall Thickness of Prover Tube C PL ——Correction Factor for Pressure on
Liquid(Dimensionless)
F ——Compressibility Factor
C TL ——Correction Factor for Temperature on
Liquid(Dimensionless) RHO ——Density of Product at Base Temperature MF ——Meter Factor
ΔT ——Observed Temperature-Base Temperature C TSP ——Correction Factor for Effects of
Temperature on Steel at Prover t coefp ——Square Coefficient of Expansion per ℃ of the Prover Tube
C PSP ——Correction Factor for Effects of Pressure on Steel at Prover t coefi ——Lineat Coefficient of Cubical
Expansion per ℃ of the Prover Switch Rod
C TLP ——Correction Factor for Effects of Temperature on Liquid at Prover T ——Average Prover Temperature in ℃ C PLP ——Correction Factor for Effects of Pressure on Steel at Prover b T ——Average Base Prover Temperature in ℃ C TLM ——Correction Factor for Effects of Temperature on Steel at Meter
i
T ——Average Prover Switch Rod Temperature
in ℃
C PLM ——Correction Factor for Effects of
Pressure on Steel at Meter e ——Napierian Comstant(=2.71828)
NOTE: There must be harmonious units in above formulas. For example, if the pressure unit would be PSIG, the widt h unit is inch or foot, and the temperature unit is ℉, and so on.。