JOHNSON CONTROLS
33
FORM 160.77-O1
ISSUE DATE: 10/22/2020
SI METRIC CONVERSION
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 4 -
ANALOG INPUT RANGES (LOW PRESSURE CHILLERS)
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)
304.8
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)
