27
3 Operation
Analysis
CH4
Yes
C2H6 ????
C3H8 ----
CH4
17.09.2018
11:21 12/47
150
200
0
50
100
250 s
0,1
1,0
10
100
Fig. 12: Ethane analysis
protocol
A protocol contains the following
information about the gas sample:
– Analysis of the gas components:
CH
4
Yes
C
2
H
6
????
C
3
H
8
– – – –
– Curve; peaks of the gas compo-
nents definitely present in the
sample are labelled: CH
4
– Date and time the protocol was
saved
– Protocol number: 12/47, i.e.
12th protocol of 47 protocols in
total
The symbols next to the analysed gas components are defined
as follows:
Symbol
Gas component is …
Yes
Definitely present
????
Possibly present
– – – –
Not present
Ideally, the result of the ethane analysis is a curve with at least
one clear, steep peak (fig. 12 left). However, occasionally, the
analysis does not provide a clear determination of the gas com-
ponents present (fig. 12 right). In such cases, you must decide
whether the analysis quality is sufficient.
Analysis
CH4
Yes
C2H6
Yes
C3H8
Yes
CH4
C2H6
17.09.2018
11:35 13/47
C3H8
150
200
0
50
100
250 s
0,1
1,0
10
100
Analysis
CH4
Yes
C2H6 ????
C3H8 ----
CH4
17.09.2018
11:57 14/47
150
200
0
50
100
250 s
0,1
1,0
10
100
Fig. 13: Quality assessment of an ethane analysis; Left: good quality,
Right: poor quality
