Table 3- 3 Common Gases For Clamp-On Measurement - Siemens SITRANS F Series Quick Start Manual

Setting Fixed Pressure
At the Gas Parameters menu, scroll down to [Fixed Pres. PSIA]. Press the <Right Arrow> to
select and edit the default Fixed Pressure value by entering approximate nominal operating
pressure. (See table for additional gas parameter values.)
The table below indicates the viscosity, specific heat ration and estimated sound velocity
(Vs) for some common gases. The default Gas Parameters are suitable for natural gas.
Table 3- 3 Common Gases for Clamp-On Measurement (at 200 PSIA & 60
Gas
Carbon Monoxide
Ethane
Helium
Hydrogen
Methane
Natural Gas
Nitrogen
Oxygen
Standard Volume Compensation
If a direct standard volume output is required from the meter, then the entry of an AGA8
compensation table may be needed. Refer to the flowmeter manual for further details on
configuring the meter for standard volume compensation.
Select CC129 Thickness
After selecting the appropriate transducer size (see paragraph 5 Transducer Installation)
determine the corresponding damping material final thickness using Table 2 and transfer
entry to menu cell.
SITRANS FUG1010 Quick Start
Operating Instructions (Compact), 1/2009, CQO:QSG005 Revision B
Viscosity (cp)
0.017
0.010
0.019
1.410
0.011
0.011
0.017
0.020
F / 14 bar & 15.5
o
Spec. heat Ratio (Cp/Cv)
1.43
1.32
1.66
1.41
1.35
1.33
1.42
1.42
Commissioning
3.4 Setting the Parameters
C)
o
Estimated Vs (m/s)
348
281
1006
1306
437
400
348
324
25