Calibration Reference Sheet
viii Envizio Pro and Envizio Pro II Installation and Operation Manual
Unit Definitions and Conversions
Unit of Measure Definitions
Unit of Measure Conversions
To convert the METER CAL value into the selected unit of measure, divide the original number printed on the
Flow Meter label by the desired conversion value.
Abbreviation Definition Abbreviation Definition
GPM Gallons per Minute cm Centimeters
lit/min Liters per Minute dm Decimeters
dl/min Deciliters per Minute m Meter
PSI Pounds per Square Inch MPH Miles per Hour
kPa Kilopascal km Kilometers
GPA Gallons per Acre km/h Kilometers per Hour
lit/ha Liters per Hectare US Volume per Acre
ml/ha Milliliters per Hectare SI Volume per Hectare
GPK Gallons per 1,000 Square Feet TU Volume per 1,000 Square Feet
mm Millimeters [ ] Metric Numbers
Fluid Ounces Conversion Formula Liters Conversion Formula Pounds Conversion Formula
Original METER CAL Number
128
Original METER CAL Number
3.785
Original METER CAL Number
Weight of One Gallon of Product
Liquid Area
• 1 U.S gallon = 128 fluid ounces • 1 square meter = 10.764 square feet
• 1 U.S. gallon = 3.785 liters • 1 hectare = 2.471 acres or 10,000 square meters
• 1 U.S. gallon = 0.83267 imperial gallons • 1 acre = 0.405 hectares or 43,560 square feet
• 1 U.S. gallon = 8.34 pounds (water) • 1 square mile = 640 acres or 258.9 hectares
Length Pressure
• 1 millimeter (mm) = 0.039 inches • 1 psi = 6.89 kPa
• 1 centimeter (cm) = 0.393 inches • 1 kPa = 0.145 psi
• 1 meter (m) = 3.281 feet
• 1 kilometer (km) = 0.621 miles
• 1 inch = 25.4 mm or 2.54 cm
• 1 mile = 1.609 km
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