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Appendix C Modbus Register Definitions
/* Temperature Units */
DegC = 32, /* Degrees Celcius */
DegF = 33, /* Degrees Fahrenheit */
DegR = 34, /* Degrees Rankine */
DegK = 35, /* Kelvin */
/* Pressure Units */
InH2OAt68F = 1, /* inches of water at 68 degF */
InHgAt0C = 2, /* inches of mercury at 0 degC */
FtH2OAt68F = 3, /* feet of water at 68 degF */
MMH2OAt68F = 4, /* millimeters of water at 68 degF */
MMHgAt0C = 5, /* millimeters of mercury at 0 degF */
PSI = 6, /* pounds per square inch */
BAR = 7, /* bars */
MilliBAR = 8, /* millibars */
GMPerSqCm = 9, /* grams per square centimeter */
KGPerSqCm = 10 /* kilograms per square centimeter */
Pascals = 11, /* pascals */
KiloPascals = 12, /* kilopascals */
Torr = 13, /* torricellis */
Atmospheres = 14, /* atmospheres */
InH2OAt60F = 145, /* inches of water at 60 degF */
CmH2OAt4C = 170, /* centimeters of water at 4 degC */
MetH2OAt4C = 171, /* meters of water at 4 degC */
CmHgAt0C = 172, /* centimeters of mercury at 0 degC */
PSF = 173, /* pounds per square foot */
HectoPascals = 174, /* hectopascals */
PSIA = 175, /* pounds per square inch absolute */
KGPerSqMeter = 176, /* kilograms per square meter */
FtH2OAt4C = 177, /* feet of water at 4 degC */
FtH2OAt60F = 178, /* feet of water at 60 degF */
MetHgAt0C = 179, /* meters of mercury at 0 degC */
MegaPascals = 237, /* megapascals */
InH2OAt4C = 238, /* inches of water at 4 degC */
MMH2OAt4C = 239, /* millimeters of water at 4 degC */
/* Volumetric Flow Units */
CuFtPerMin = 15, /* cubic feet per minute */
GalPerMin = 16, /* gallons per minute */
LiterPerMin = 17, /* liters per minute */
ImpGalPerMin = 18, /* imperial gallons per minute */
CuMeterPerHr = 19, /* cubic meter per hour */
GalPerSec = 22, /* gallons per second */
MillionGalPerDay = 23, /* million gallons per day */
LiterPerSec = 24, /* liters per second */
MillionLiterPerDay = 25,/* million liters per day */
CuFeetPerSec = 26, /* cubic feet per second */
CuFeetPerDay = 27, /* cubic feet per day */
CuMeterPerSec = 28, /* cubic meters per second */
CuMeterPerDay = 29, /* cubic meters per day */
ImpGalPerHr = 30, /* imperial gallons per hour */
ImpGalPerDay = 31, /* imperial gallons per day */
NormCuMeterPerHr = 121,/* normal cubic meter per hour - MKS System */
NormLiterPerHr = 122, /* normal liter per hour - MKS System */
StdCuFtPerMin = 123, /* standard cubic feet per minute - US System */
CuFeetPerHour = 130, /* cubic feet per hour */
CuMeterPerMin = 131, /* cubic meters per minute */
BarrelPerSec = 132, /* barrels per second - 1 Barrel = 42 US gallons */
BarrelPerMin = 133, /* barrels per minute */
BarrelPerHr = 134, /* barrels per hour */
BarrelPerDay = 135, /* barrels per day */
GalPerHr = 136, /* gallons per hour */
ImpGalPerSec = 137, /* imperial gallons per hour */
LiterPerHr = 138, /* liters per hour */
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