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Function Blocks
UM353-1
March
2003
3-12
G
r
= real gas relative density (specific gravity)
Z
s
= compressibility at standard conditions
Z
f
= compressibility at flowing conditions at upstream tap -
Z
f1
Z
b
= compressibility at base conditions
The specific gravity factor (
G
r
) and the compressibility factors (
Z
s
, Z
f
, Z
b
) can be entered manually using HLD
(Hold) function blocks, computed, and then downloaded from a host device, or calculated in the controller using the
AG8 (AGA 8 Compressibility Factors of Natural Gas) function block.
The following are analog outputs of the AGA 3 function block:
Q
b
= volume flow rate at base conditions (SCFH - Standard Cubic Feet per Hour)
C'
= composite orifice flow factor [SCFH/
√
(psia)(in H2O)]
h
w
P
f
T
f
G
r,
Z
f,s,b
Q
b
AGA 3
Application Diagram
StockCheck.com
Содержание Moore 353
Страница 2: ...S t o c k C h e c k c o m ...
Страница 14: ...Contents UM353 1 xii March 2003 S t o c k C h e c k c o m ...
Страница 24: ...Introduction UM353 1 March 2003 1 10 S t o c k C h e c k c o m ...
Страница 152: ...LonWorks Communications UM353 1 March 2003 5 4 S t o c k C h e c k c o m ...
Страница 164: ...Network Communications UM353 1 6 12 March 2003 S t o c k C h e c k c o m ...
Страница 246: ...Operation UM353 1 March 2003 9 8 S t o c k C h e c k c o m ...
Страница 254: ...Controller and System Test UM353 1 March 2003 10 8 S t o c k C h e c k c o m ...
Страница 282: ...Circuit Description UM353 1 March 2003 13 4 S t o c k C h e c k c o m ...
Страница 298: ...Model Designation and Specifications UM353 1 March 2003 14 16 S t o c k C h e c k c o m ...
Страница 302: ...Abbreviations And Acronyms UM353 1 15 2 March 2003 S t o c k C h e c k c o m ...
Страница 304: ...Warranty UM353 1 W 2 March 2003 S t o c k C h e c k c o m ...