FOR MODELS: JGI, JGM, JGN, JGP AND JGQ SECTION 7 - APPENDICES
9/08 PAGE 7-5
TABLE 7-1: SI METRIC CONVERSION
MEASUREMENT CONVERSION
Area
• square inch or in
2
x 0.00064516 = meter
2
or m
2
• square inch or in
2
x 6.4516 = centimeter
2
or cm
2
Flow - Gas
• Million standard cubic feet/day or MMSCFD (at 14.696 psia & 60°F) x
0.310 = normal meter
3
/second (at 1.01325 bar & 0°C),
or m
3
/s
n
• Standard cubic feet/minute or SCFM (at 14.696 psia & 60°F) x 1.607 =
normal meter
3
/hour (at 1.01325 bar & 0°C), or m
3
/h
n
Flow - Liquid
• US gallons per minute or GPM x 0.0630902 = liter/second or L/s =
dm
3
/s
• US gallons per minute or GPM x 0.227125 = meter
3
/hour or m
3
/h
Force
• lbf or pound (force) x 4.44822 = Newton or N
Heat
• British Thermal Units or BTU x 1.05506 = kilojoule or kJ
Length
• inches or in or " x 25.4000 = millimeters or mm
• feet or ft x 0.304800 = meter or m
Mass
• pound (mass) or lb
m
x 0.453592 = kilogram or kg
Moment or Torque
• Lb x Ft or pound-foot (force) x 1.35583 = Newton-meter or N·m
• Lb x In or pound-inch (force) x 0.112985 = Newton-meter or N·m
Power
(Horsepower based
on 550 ft-lb/sec.)
• Horsepower or HP x 0.745700 = kilowatt or kW
Pressure or Stress
G or g suffix = gauge
pressure;
A or a = absolute;
D or d = differential
• psi x 6894.757 = Pascal or Pa • bar x 100 = kPa
• Pa x 0.000145 = psi • kPa x 0.01 = bar
• psi x 6.894757 = kiloPascal or kPa• psi x 68.94757 = millibar or mbar
• kPa x 0.145 = psi • mbar x 0.0145 = psi
• bar x 100 000 = Pa • psi x 0.06894757 = bar
• Pa x 0.00001 = bar • bar x 14.5 = psi
Speed
• feet per minute or FPM x 0.005080 = meter per second or m/s
• revolutions per minute or RPM or r/min x 60 = revolutions per second
or rev/s
Temperature
• (degrees Fahrenheit or °F - 32) ÷ 1.8 = degrees Celsius or °C
Time
• sec or s = second • hour or hr or h x 60 = min
• minute or min x 60 = s • h x 3600 = s
Viscosity (Dynamic)
• Saybolt Universal seconds or SUS or SSU x 0.22 - (180 ÷ SUS) =
mm
2
/s = centistoke or cSt (for a range of 33 through 200,000 SUS)
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