DPM TT Series - Conversion Tables

CONVERSIONTABLES
TTSeriesLR Manual
Page11
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Pressure: 
 Pa mbar mmH
2
O inH
2
O mmHg inHg PSI
Pa 1 100.0 9.806 249.1 133.3 3385 6892
mbar 0.010 1 0.098 2.491 1.333 33.85 68.92
mmH
2
O 0.102 10.20 1 25.40 13.60 345.42 702.8
inH
2
O 0.004 0.402 0.039 1 0.535 13.51 27.67
mmHg 7.501x10
‐3
 0.750 0.074 1.868 1 25.64 51.70
inHg 2.953x10
‐4
 0.029 2.895x10
‐3
0.074 0.039 1 2.305
PSI 1.451x10
‐4
 0.014 1.423x10
‐3
0.036 0.019 0.4338 1
 
Volume: 
 m
3
/sec m
3
/hr l/sec cfm
m
3
/sec 1 0.0002 0.001 0.0004
m
3
/hr 3600 1 3.6 1.699
l/sec 999.97 0.2777 1 0.4719
cfm 2118.88 0.5885 2.1189 1

Velocity: 
 m/sec ft/min
m/sec 1 0.005
ft/min 196.85 1
 
AirVelocityCalculationsusingS.IScales:
 Fornon‐standardairconditions: V=1.291 xPT1013.25 x T x Pv
 V = Velocityinm/sec  B 293
PT = PitotTubeFactor(forEllipsoidaltype1.000)
B = Barometricpressureinmbar
 T = Absolutetemperaturein°K(=tin°C+273wheret=airstreamtemperature)
 Pv = VelocitypressureinPa

AirVelocityCalculationsusingImperial Scales:
 Fornon‐standardairconditions: V=
4006 xPT  30 x T x Pv
 V = Velocityinft/min  B 528
 PT = PitotTubeFactor(forEllipsoidaltype1.000)
 B = BarometricpressureininHg
 T = Absolutetemperaturein°R(=tin°F+460wheret=airstreamtemperature)
 Pv = Velocitypressureinwg
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