Endress+Hauser RMS 621 - 11 Appendix; Definition of Important System Engineering Units; Configuration Flow Measurement

RMS 621 11 Appendix
Endress+Hauser 65
11 Appendix
11.1 Definition of important system engineering units
11.2 Configuration flow measurement
The energy manager generates output signals from a number of standard flow meters.
• Operating volume:
Flow meters that transmit a signal proportional to the flow volume (e.g. Vortex, MIF, Turbine).
• Mass:
Flow meters that transmit a signal proportional to the mass (e.g. Coriolis)
• Differential pressure:
Flow meters (DPT) that transmits a signal proportional to the differential pressure.
Volume
bbl 1 barrel, for definition see ’Setup Æ Application’
gal 1 US-gallon, equals 3.7854 litre
igal Imperial gallon, equals 4.5609 litre
l 1 litre = 1 dm
3
hl 1 Hektoliter = 100 litre
m³ equals 1000 litres
ft³ eequals 28.37 litres
Temperature
Calculation factor:
• 0 ° C = 273.15 K
• ° C = °F - 32/1.8)
Pressure
Calculation factor:
1 bar = 100 kPa = 100000 Pa = 0.001 mbar = 14.504 psi
Mass
ton (US) 1 US ton, equals 2000 lbs (= 907.2 kg)
ton (long) 1 long ton, equals 2240 lbs (= 1016 kg)
Power (heat flow)
ton 1 ton (refrigeration) equals 200 Btu/m
Btu/s 1 Btu/s equals 1.055 kW
Energy (heat quantity)
tonh 1 tonh, equals 1200 Btu
Btu 1 Btu equals 1.055 kJ
kWh 1 kWh equals 3600 kJ equals 3412.14 Btu