3. Allocating the volume to the differential pressure using the
linearisation table of the mathematics channel. Special tank
forms can be described using a further 18 linearisation points:
Further parameters in order to complete the measurement
point, such as measured value display on the unit, analogue
value output and set point alarm monitor:
Menu group Parameter Set-up
Mathematics channel
MATH
(differential pressure
[bar]
➠ volume [m
3
])
Curve
MCURV
X-value lin. point 1 MSCLO
X-value last lin. point MSCHI
Y-value decimal point MDIDP
Y-value lin. point 1 MDILO
Y-value last lin. point MDIHI
TABLE
000,00
002,50
9999,9
0000,0
2020,0
Linearisation table TABM Number of linearisation points COUNM Number and
values
independent
of tank
geometry
Lin. point 2
NOM02
.
.
.
.
Lin. point 19
NOM19
Input value X2
Output value Y2
.
.
Input value
X2
Output value Y2
Menu group Parameter Set-up
Display
DISPL Reference value DISOW MATH
Analogue output 1 OUT1
(Head pressure [bar])
Reference value
OREF1
Output range RANG1
Analogue output 0% scale OLO1
Analogue output 100% scale OHI1
IN 2
4-20
000,00
001,00
Analogue output 2 OUT2
(volume [m
3
])
Reference value
OREF2
Output range RANG2
Analogue output 0% scale OLO2
Analogue output 100% scale OH21
MATH
4-20
0000,0
2020,0
Limit 1 LIM1
(Minimum monitoring of
head pressure)
Reference value
LREF1
Operating mode MODE1
Switch threshold SETP1
Hysteresis HYST1
IN 2
MIN-
000,30
000,05
Limit 2 LIM2
(Maximum monitoring of
volume)
Reference value
LREF2
Operating mode MODE1
Switch threshold SETP1
Hysteresis HYST1
MATH
MAX
1900,0
0005,0
Process transmitter
64
To Next Page
Loading...
