33
Where Q = Standard flow rate
T = Absolute temperature of gas in flow tube
P = Absolute pressure in flow tube
TSI flowmeters use Tstd = 21.11
ºC and Pstd = 101.3 kPa
absolute
Example:
The mass flow rate measured by the flowmeter is 100 Std L/min at
15
ºC and 117.0 kPa. The flowmeter calculates and outputs the
volumetric flow as follows.
min/L.
..
.
)(FlowVolumetric 7884
kPa 117.0
kPa 101.3
Cº 112115273
Cº 1515273
L/min std 100 =
+
+
=