Natural gas flow measurement by INDU SEKHAR in Instrumentation

As per the Guest, I took the trouble of going into it and pasting you the following:

kingsss (Chemical)

1 Nov 04 9:30 What I have experienced so far Nm3/hr is the volume flow considered at 0°C and 1 bar (absolute).
Sm3/hr is the flow taken at 15°C and 1 atm (1,013 barA).
However, the 15°C is sometimes subjected to dicussion: 20°C is taken as well.

Conversion can easily be made by using (P*V)/T = C

Regards, Kingsss Don't thank me, thank the guest and Kingsss

The basic difference is that NM3/hr is normal meters/cubed per hour and SM3/hr is Standard Meters/cubed per hour. Essentially, one is the uncompressed volume and the other is the compressed volume. Standard is the same as normal when pressure =1barA

For more information on gas flow meters visit www.rshydro.co.uk

Rob