ABB COMMANDER 1900 Series, User Manual, Page: 27 / 36

25
…5.2 Set Up Maths (Mass Flow)
5 ADVANCED CONFIGURATION LEVEL…
• Maths
Mass Flow 1 or 2 Input
Select the process variable source required for input A (input A is the input from volume flow or
differential pressure).
For description of the process variable sources, refer to Table 5.1 on page 26.
Temperature Input
Select the process variable source required for the temperature input.
Temperature Units
Select the input source temperature units:
AbS – Input source measured in degrees absolute (
°
K or
°
R)
dEG F
– Input source measured in
°
F
dEG C – Input source measured in
°
C
Reference Temperature
Set the value which represents the reference temperature, between 0 and +9999. The decimal
point is set in the next frame.
Reference Temperature Decimal Point
Set the number of decimal places required for the reference temperature (0 to 3 places).
Pressure Input
Select the process variable source required for the pressure input.
Pressure Reference
Set the value which represents the pressure reference, between 0 and +9999. The decimal point
is set in the next frame.
Pressure Reference Decimal Point
Set the number of decimal places required for the pressure reference (0 to 3 places).
Scaling Constant
Set the value which represents the scaling constant (k), between 0.00 and +99.99. The decimal
point is set in the next frame.
Scaling Constant Decimal Point
Set the number of decimal places required for the scaling constant (k) (0 to 3 places).
Return to
Select Maths Function
frame.
or
FUNCtN
MASS–2 FUNCtN
MASS–1
SELECt
––––––
IPUt–A
CNSt–8
PV–1
IPUt–t
NONE
t–UNIt
AbS
dEG–F
t–rEF
0
dECPt
0
IPUt–P
CNSt–8
NONE
P–rEF
0
SC CON
0
dEG–C
dECPt
0
dECPt
0
CNSt–8