20
E
.0
4.
99
•
G
. 0
9.
05
.1
2
Flow measurement
Determining flow duration at gas meter..
Calculated flow duration in seconds t
spec
for a flow volume of 200 litres (corresponding to 0.2 m
3
)
for the example given above is:
V
B
= 3.3 m
3
/h
Gas flow setting
Measured flow duration in seconds [s]
Measures
Greater than calculated flow duration t
soll
Increase gas flow
Less than calculated flow duration t
soll
Reduce gas flow
Equal to calculated flow duration t
soll
Gas flow achieved
t
soll
0 2m
3
3600
s
h
---
×
,
V
B
m
3
h
------
--------------------------------------
720m
3
s
h
---
V
B
m
3
h
------
--------------------
720m
3
s
h
---
3 3
m
3
h
------
,
-------------------
218s
=
=
=
=
Start-up
Summary of Contents for GG20-LN
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