Page 131 - Gaylord Blue Book 2021

M etric Conversions

DIMENSIONS (Feet and Inches) WATER FLOW/VOLUME
TO CONVERT TO MULTIPLY BY TO CONVERT TO MULTIPLY BY
in .............................mm ...............25.4 U.S. ounce ...............Liters...................02958
in .............................cm...................2.54 U.S. gal ....................Liters ..................3.785
mm ..........................in ....................0.03937 Liters ........................U.S. gal ...............0.2642
cm ...........................in ....................0.3937 GPM ........................L/s ......................0.0631
ft ..............................cm ................30.48 L/s ............................GPM .................15.850
ft ..............................m ....................0.3048
cm ...........................ft .....................0.0328 STANDARD CONVERSIONS
m .............................ft .....................3.2808
one U.S. gal. ............= ............... 3.785 Liters
STANDARD CONVERSIONS one Liter ..................= ............... 0.2642 U.S. Gal.
one GPM/ft. .............= ............... 0.063 L/s/ft.
One meter = 10 dm one in. = 25.40 mm or .............. 0.207 L/s/m
One meter = 100 cm one ft. = 304.80 mm one U.S. gal. ............= ............... 0.833 Imperial Gal.
One meter = 1000 mm one Imperial Gal. .....= ............... 4.546 Liters
AIR VELOCITY WATER PRESSURE
TO CONVERT TO MULTIPLY BY TO CONVERT TO MULTIPLY BY
FPM .........................m/s .....................0.00508 psi ............................kg/m ..............703.1
2
m/s ..........................FPM.................... 196.85
psi ............................kg/cm ................0.0703
2
AIR VOLUME kg/m .......................psi .......................0.0014
2
TO CONVERT TO MULTIPLY BY kg/cm ......................psi .....................14.223
2
CFM .........................m /sec ................0.000472 STANDARD CONVERSIONS
3
CFM .........................m /min ...............0.02832 40 psi = 2.8 kg/cm 80 psi = 5.6 kg/cm 2
3
2
= 275.8 Kpa = 551.6 Kpa
CFM .........................m /hr ..................1.70 = 2.758 BAR = 5.516 BAR
3
CFM .........................Ltrs/sec .............0.472 TEMPERATURE
m /sec .....................CFM....................2118.88
3
TO CONVERT TO USE FORMULA
m /min .....................CFM....................35.31
3
m /hr .......................CFM ...................0.5886 °C ............................°F.............°F = (°C • 1.8) + 32
3
°F..............................°C............°C = (°F - 32)
STATIC PRESSURE 1.8
TO CONVERT TO MULTIPLY BY STANDARD CONVERSIONS
140°F to 180°F = 60°C to 82°C
in. W.G .....................N/m ...............248.84
2
2
N/m ........................in. W.G............0.004 WEIGHT
STANDARD CONVERSIONS TO CONVERT TO MULTIPLY BY
1.00” W.G. = 248.84 N/m 2 lbs. ...........................N .........................4.448
lbs. ...........................kg .......................0.4536
or 248.84 Pascals (Pa) N ..............................lbs .......................0.2248
or 2.49 Millibars kg .............................lbs .......................2.2046
1.33” W.G. = 331 N/m or 331 Pa PIPE SIZE
2
2
1.50” W.G. = 373 N/m or 373 Pa U.S. STANDARD STANDARD METRIC
1.65” W.G. = 411 N/m or 411 Pa PIPE SIZES EQUIVALENT PIPE SIZE
2
2
1.70” W.G. = 423 N/m or 423 Pa 1/2” .......................= .......................15 mm
3/4” .......................= .......................20 mm
1” ..........................= .......................25 mm
1-1/4”....................= .......................32 mm
1-1/2”....................= .......................40 mm
2” ..........................= .......................50 mm
LEGEND
in. = inches Pa. = Pascals FPM = feet per minute
ft. = feet U.S. gal. = U.S. gallon m/s = meters per second
mm = milimeters GPM = gallons per minute in. W.G. = inches water gauge
cm = centimeters L/s = liters per second N = Newtons
dm = decimeters Kpa = 1000 Pascals N/m 2 = Newtons per square meter
CFM = cubic feet per minute psi = pounds per square inch °C = degrees Celsius
m /s = cubic meters per second kg/m 2 = kilograms per square meter BAR = one atmospheric pressure meter
3
L = Liters °F = degrees Fahrenheit (1000 millibars = 14.7 psi)

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