JOHNSON CONTROLS
35
FORM 160.78-N1
ISSUE DATE: 5/30/2012
35
The following factors can be used to convert from
English to the most common SI Metric values.
TEMPERATURE
To convert degrees Fahrenheit (°F) to degrees Celsius
(°C), subtract 32° and multiply by 5/9 or 0.5556.
Example: (45.0°F - 32°) x 0.5556 = 27.2°C
To convert a temperature range (i.e., a range of 10°F)
from Fahrenheit to Celsius, multiply by 5/9 or 0.5556.
Example: 10.0°F range x 0.5556 = 5.6 °C range
TABLE 5 - SI METRIC CONVERSION
MEASUREMENT MULTIPLY ENGLISH UNIT BY FACTOR TO OBTAIN METRIC UNIT
Capacity Tons Refrigerant Effect (ton) 3.516 Kilowatts (kW)
Power Horsepower 0.7457 Kilowatts (kW)
Flow Rate Gallons / Minute (gpm) 0.0631 Liters / Second (l/s)
Length
Feet (ft) 0.3048 Meters (m)
Inches (in) 25.4 Millimeters (mm)
Weight Pounds (lbs) 0.4538 Kilograms (kg)
Velocity Feet / Second (fps) 0.3048 Meters / Second (m/s)
Pressure Drop
Feet of Water (ft) 2.989 Kilopascals (kPa)
Pounds / Square Inch (psi) 6.895 Kilopascals (kPa)
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