Yokogawa digitalYEWFLO (DY-FF) - Manual (Page 117)

<APPENDIX 6. Enhanced ARITHMETIC (AR) BLOCK>
A6-10
IM 01F06F00-01EN
A6.7 Setting Procedure of the Mass Flow Rate Calculation
Choice of calculation method
Input and output unit parameter
settings
Unit setting of volume flow input
Unit-range setting of output
Unit setting of pressure
or input temperature input
Set of parameters to be used
for correction
End
*The configuration please use the Method (refer to Appendix 10 “METHOD”)
Choose from the following ARITH_TYPE.
32 : Saturated steam (Temperature) (Saturated steam density calculation (Temperature))
33 : Saturated steam (Pressure) (Saturated steam density calculation (Temperature))
34 : Superheat steam (Superheat steam density calculation)
35 : Gas temperature pressure compensation (Gas temperature and pressure correction operation)
36 : Liquid temperature compensation (Liquid temperature correction calculation)
Set the input of the following, the parameters of the output section.
GAIN = 1.0
If you are using a temperature input, GAIN_IN_1 = 1.0
If you use a pressure input, GAIN_IN_2 = 1.0compensation (liquid temperature correction calculation)
Set to AR_VOLUME_FLOW_UNIT the volume flow input unit.
Selectable units ;
Set to OUT_RANGE.Units Index units of output.
Selectable units,
Mass flow rate units: kg/s, kg/min, kg/h, t/s, t/min, t/h
Volumetric flow rate units: Nm
3 /s, Nm 3 /min, Nm 3 /h, NL/s, NL/min, NL/h
If the gas pressure temperature correction calculation, units of all of the above can be set.
Otherwise, it can only be set in mass flow units.
Also, set the output range (100%, 0%) the EU_100, to EU_0.
If you are using a temperature input, set the AR_TEMP_UNIT the temperature unit.
Selectable units ;
If you use a pressure input, set the AR_PRESSURE_UNIT the pressure unit.
Selectable units ;
(Pressure unit does not distinguish gauge pressure, absolute pressure.)
Also, if the input is a pressure gauge pressure, set the value of atmospheric pressure in BIAS_IN_2.
If you want to steam saturation density operation (temperature or pressure), the superheated steam
density computation is set density units (AR_DENSITY_UNIT).
If you are the gas temperature and pressure correction computation is set standard state temperature
AR_BASE_TEMP, standard state pressure AR_BASE_PRESSURE, the coefficient of variation
AR_DEVIATION. For a mass flow unit, standard density of states and density AR_BASE_DENSITY
unit AR_DENSITY_UNIT also please set the output unit.
If the solution is temperature correction calculation, set the standard density of states and density
AR_BASE_DENSITY unit AR_DENSITY_UNIT, standard state temperature AR_BASE_TEMP, primary,
secondary temperature correction factor AR_FIRST_TEMP_COEF, the AR_SECOND_TEMP_COEF.
FA0606.ai
Mass flow rate calculation,
Setting start
AR_VOLUMETRIC_FLOW_UNIT
m 3 /s (1347), m 3 /min (1348), m 3 /h (1349), m 3 /d (1350), L/s (1351), L/min (1352), L/h (1353),
L/d (1354), CFS (1356), CFM (1357), CFH (1358), ft 3 /d (1359), gal/s (1362), GPM (1363),
gal/h (1364), gal/d (1365), ImpGal/s (1367), ImpGal/min (1368), ImpGal/h (1369),
ImpGal/d (1370), bbl/s (1371), bbl/min (1372), bbl/h (1373), bbl/d (1374)
AR_PRESSURE_UNIT
Pa (1130), Gpa (1131), Mpa (1132), kPa (1133), mpa (1134), μpa (1135), hPa (1136), bar (1137),
mbar (1138), torr (1139), atm (1140), psi (1141), g/cm 2 (1144), kg/cm 2 (1145), inH
2
O (1146),
inH
2
O (4°C) (1147), inH
2
O (68°F) (1148), mmH
2
O (1149), mmH
2
O (4°C) (1150),
mmH
2
O (68°F) (1151), ftH
2
O (1152), ftH
2
O (4°C) (1153), ftH
2
O (68°F) (1154), inHg (1155),
inHg (0°C) (1156), mmHg (1157), mmHg (0°C) (1158),
AR_TEMPERATURE_UNIT
K (1000), °C (1001), °F (1002)
AR_DENSITY_UNIT
kg/m 3 (1097), lb/ft 3 (1107), lb/gal (1108), lb/ImpGal (1430)
AR_DENSITY_FACTOR_UNIT
kg/m 3 (1097), lb/ft 3 (1107), lb/gal (1108), lb/ImpGal (1430), No units (1588)