Bronkhorst®
Instruction Manual EL-FLOW® Prestige
9.17.084N
43
4.2.3.2
Fluid mixture parameters
Mix Fraction Type
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
RW
0…2
346
126/4
0x0FC4/4037
Set the fraction type of the mixture:
Value
Description
0
Volume fraction
1
Mass fraction
2
Mole fraction
Mix Volume Temperature
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
RW
-250…500
347
126/5
0xFE28…0xFE29/65065…65066
Temperature of the mixture in °C. The value of this parameter is only relevant if
Mix Fraction Type
= 0.
Mix Volume Pressure
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
RW
0…3.4E+38
348
126/6
0xFE30…0xFE31/65073…65074
Pressure of the mixture in bar(a). The value of this parameter is only relevant if
Mix Fraction Type
= 0.
Mix Component Index
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
RW
0…4
349
126/7
0x0FC7/4040
Index of the current component in the mixture (max. 5 components).
Mix Component Fraction
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
RW
0…1
350
126/8
0xFE40…0xFE41/65089…65090
Mix fraction of the current mix component (
Mix Component Index
). The value range corresponds to 0…100%. The sum of the
all mix fractions must be equal to 1.
If the value is 0, the next component slots are ignored.
Mix Component Fluid Name
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char[10]
RW
-
351
126/9
0xFE48…0xFE4C/65097…65101
This parameter contains the fluid name of the current mix component (
Mix Component Index
). This parameter may contain
one of two value types:
·
Gas name, e.g. 'N2', 'He', 'C3H6 #2'.
·
CAS Registry Number, e.g. '7727-37-9', '7440-59-7', '115-07-1'
If the parameter contains no name, the next component slots are ignored.