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Computation Programs with terminal assignments

Computation Program No. 765: flow rate/thermal power, steam minus water

Calculation of the output variable

[,

,

,∆

,∆

,∆

,

,

,(

), α, ε ]

⋅ς

Legend

A E h p p Q Q T v P α ε ς m v

Output Input Enthalpy Absolute pressure Differential pressure, linear or with root extraction Mass flow Volume flow rate in operating state Temperature Specific volume Thermal or refrigerating capacity Thermal difference Flow rate coefficient Expansion factor Operating density

D

Steam

r

Calculation value

w

Water

Indices

Variables

p

T

T

W

19" Plug-In Card

z2, d2

z4, d4

z6, d6

Field case / Con- trol panel case

63, 64

35, 36

7,8

Inputs / outputs

E1

E2

E3

Table 7-5 Terminal assignment

z8,

z10,

z10,

z12,

z4,d4

z8,d8

z18,

d8

d10

d18

d12

d18

67, 68

39,40

39,41

11,12

75,76

47,48

42,43

E4

E5

EB1

E6

Ex1

EX2

A1 (mA)

T

T

W

P D , P W QmD, QmW, p ,

p2

pw , QvW

p1, QvD

f ( Q v )

p,T Tw ,,

p,T Tw ,,

p

p

PD P ,,

W

PD P ,,

W

QmD, QmW,

QmD, QmW,

z20,

z22,

d20

d22

14,15

19,20

A2(V)

AX1 (mA)

16

P D , P W ,

QmD, QmW,

p,T Tw ,,

p

z24, d24

21,22

AX2 (mA)

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