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Gas SOS Calculator
Section 7: Tools commands
3410 Series Gas Ultrasonic Meters Operations Manual
June 2016
3-9000-777 Rev D
7.3
Gas SOS Calculator
The
SOS Calculator
dialog box allows you to calculate a Speed of Sound (SOS) for a given gas
composition and operating conditions.
Figure 7-6 Gas SOS Calculator
The calculations are from the AGA Report No. 10 (May 2003). You do not need to be connected
to a meter to use this utility. The units for the values displayed are defined in the
File|Program
Settings
dialog.
7.3.1
Calculate SOS for the gas composition
1.
Enter the gas composition as percentages into the Gas composition inputs table.
•
If you are connected to a Daniel Gas Ultrasonic meter running AGA8 Detailed
Method, the “In Use” gas composition is read from the meter and displayed in
Gas composition inputs. It also indicates if the values are Fixed or Live from a GC,
and if Live from a GC, the GC Start Cycle Time of the composition will be
displayed.
2.
Click
Normalize
to adjust the percentages so that the TOTAL gas composition equals
100%. The normalize operation maintains the ratios between the different
components.