Variable
|
Meaning
|
---|---|
SV
|
Gas pressure in absolute units
|
TA
|
Absolute gas temperature in Kelvin
|
CAL MFLOW_Instance (IN:=DifferentialPressure, PRES:=GasPressure, TEMP:=GasTemperature, PARA:=Parameters, OUT=>ValueOfMassFlowRate, STATUS=>StatusWord)
MFLOW_Instance (IN:=DifferentialPressure, PRES:=GasPressure, TEMP:=GasTemperature, PARA:=Parameters, OUT=>ValueOfMassFlowRate, STATUS=>StatusWord) ;
Parameter
|
Data type
|
Differential pressure (or other measure)
|
---|---|---|
IN
|
Input
|
|
PRES
|
REAL
|
Absolute or relative gas pressure
|
TEMP
|
REAL
|
Gas temperature printed out in °C or °F
|
PARA
|
Parameter
|
Parameter
|
Data type
|
Differential pressure (or other measure)
|
---|---|---|
OUT
|
REAL
|
Value of the mass flow, with temperature and pressure correction
|
STATUS
|
Status word
|
Element
|
Data type
|
Meaning
|
---|---|---|
k
|
Calculating constants (see Calculation of the constant k
|
|
en_pres
|
"1": Activate the pressure correction
|
|
pr_pa
|
BOOL
|
"1": PRES is an absolute pressure
"0": PRES is a relative pressure
|
pu
|
REAL
|
Value, which in the used pressure unit 1 displays atmosphere
|
en_temp
|
BOOL
|
"1": Activate the temperature correction
|
tc_tf
|
BOOL
|
"1": TEMP will be expressed in degrees Fahrenheit
"0": TEMP will be expressed in degrees Celsius
|
en_sqrt
|
BOOL
|
"1": Calculation with Square Root
|
Base
|
Lower limit
|
Upper limit
|
---|---|---|
Hexadecimal
|
16#0
|
16#FFFF
|
Octal
|
8#0
|
8#177777
|
Binary
|
2#0
|
2#1111111111111111
|
Data
|
Representation in one of the bases
|
---|---|
0000000011010011
|
16#D3
|
1010101010101010
|
8#125252
|
0000000011010011
|
2#11010011
|