Vemm Tec PTZ-BOX 5.0, Руководство пользователя

Страница: 26 / 65

PTZ-BOX 5.0 User manual, document edition: 13
26
Despite fact, that algorithms AGA8-G2 and AGA NX-19mod are not using calorific value Hs
for calculation of compressibility factor, it must be programmed, because it is necessary for
correct computing of energy counter.
According to selected computing algorithm, device requires programming full gas composition or few
specific gas parameters. Permissible ranges of these parameters are mentioned in following tables.
5.3.1 Ranges of using gas composition parameters
Gas composition (molar fraction) must be in following ranges:
Parameter Name unit
value in range
basic extended
*
Hs calorific value MJ/m
3
30 .. 45 20 .. 48
d relative density 0,55 .. 0,8 0,55 .. 0,9
C1 methane, CH
4
% 70 .. 100 50 .. 100
C2 ethane, C
2
H
6
% 0 .. 10 0 .. 20
C3 propane, C
3
H
8
% 0 .. 3,5 0 .. 5
nC4 n-butane, n-C
4
H
10
%
sum (nC4 + iC4)
in range 0 .. 1,5
sum (nC4 + iC4)
in range 0 .. 1,5 iC4 i-butane, i-C
4
H
10
%
nC5 n-pentane, n-C
5
H
12
%
sum (nC5 + iC5 +
neoC5)
in range 0 .. 0,5
sum (nC5 + iC5 + neoC5)
in range 0 .. 0,5
iC5 i-pentane, i-C
5
H
12
%
neoC5 neo-pentane, n-C
5
H
12
%
C6H14 n-hexane, n-C
6
H
14
% 0 .. 0,1 0 .. 0,1
C7H16 n-heptane, n-C
7
H
16
% 0 .. 0,05 0 .. 0,05
C8H18 n-octane, n-C
8
H
18
%
sum (C8H18 + C9H20 +
C10H22)
in range 0 .. 0,05
sum (C8H18 + C9H20 +
C10H22)
in range 0 .. 0,05
C9H20 n-nonane, n-C
9
H
20
%
C10H22 n-decane, n-C
10
H
22
%
H
2
hydrogen % 0 .. 10 0 .. 10
N
2
nitrogen % 0 .. 20 0 .. 50
CO
2
carbon dioxide % 0 .. 20 0 .. 30
H
2
O water % 0 .. 0,015 0 .. 0,015
H
2
S hydrogen sulphide % 0 .. 100
**
0 .. 100
**
CO carbon oxide % 0 .. 3 0 .. 3
He helium % 0 .. 0.5 0 .. 0.5
Ar argon % 0 .. 100
**
0 .. 100
**
O2 oxygen % 0 .. 100
**
0 .. 100
**
C6+
hexane & higher
hydrocarbons
% 0 .. 0,2 0 .. 0,2
* using extended range, standard EN 12213 provides increased uncertainty during computation of
compressibility factor
** when programming full gas composition, sum of components must be equal to 100%, additionally
from gas composition are calculated: calorific value and relative density, that must be in defined
ranges
During programming of gas composition using keyboard, sum of components must be equal to
100.000%. It is also possible to do remote modification of gas parameters using transmission