Positive Displacement Meter Sizing
Size rotary and diaphragm displacement meters for natural gas distribution, commercial, and industrial measurement. Calculates actual volume flow, capacity utilization, pressure drop, rangeability, and temperature/pressure correction factors per AGA Report No. 7 and ANSI B109.
Meter Type & Size
Rotary: 80:1 turndown. Diaphragm: 160:1 turndown.
psig
MAOP of meter body. Typical: 2-175 psig
Operating Conditions
psig
°F
SCFH
Standard conditions: 14.73 psia, 60°F
SCFH
SCFH
Gas Properties
-
Natural gas: 0.55-0.70
-
Near atmospheric: ~0.998. High pressure: use charts.