KROHNE VFM 5090 EN - Manual (Page 36)

diameter, fluid, medium and density. Where density
depends on temp. operating for all mediums except
-NONE-
Flow computations - When temp. sensor is not
present, value given here is used in flow computations
for all mediums except -NONE- Temperature value
can be entered in one of the units same as in Fct.
3.3.1.
LIMITS - Temp_low_opr to temp_high_opr
Limits for operating temp. are the operating temp.
range as given in -
Fct 3.3.1 TEMP. LOW and Fct. 3.3.2 TEMP. HIGH.
APPEARS - Does not appear if medium is saturated
steam and Fct. 3.5.3 SAT. P/T is set to SAT. PRES.
Fct. 3.5.7 PRES. OPR operating pressure
Enter the mean (average) operating pressure of the
medium. This parameter is very important since it is
involved in the following -
Flow range check - During plausibility check, flow
range of measurement is computed to see that Fct.
1.1.2 MAX. FLOW and Fct. 1.1.3 MIN. FLOW are
plausible. This calculation is function of nom.
diameter, k-factor, fluid, medium and density. Where
density depends on operating pressure for all
mediums except -NONE-.
Flow computations - When pressure sensor is not
present, value given here is used in flow computations
for mass or normalized flow computations for mass or
normalized flow and for all mediums except -NONE-.
Pressure value can be entered in one of the units same
as in Fct. 3.3.3.
LIMITS - Pres_low_opr to pres_high_opr
Limits for operating pressure are the operating
pressure range given in Fct. 3.3.3 PRES. LOW and
Fct. 3.3.4 PRES. HIGH.
APPEARS - Does not appear if -
1. Medium is saturated steam & Fct. 3.5.3 SAT. P/T
is set to SAT. TEMP or
2. Fluid is Liquid.
Fct. 3.5.8 DENS. OPR. density at operating P&T
Enter the density of medium at operating pressure and
temp. conditions. The value can be entered in one of
the following units -
l Kg/m3 l Kg/Litre l Lb/ft3
l Lb/cft
LIMITS - 0.6 to 100Kg/m
3
APPEARS - If fluid is GAS and medium is NONE -
Fct. 3.5.9 TEMP. NORM normal temperature
Enter value for normal/base/reference temperature.
This value is usually 0 0 or 20 0 C. Unit options for
this value are the same as in FCT. 3.3.1.
LIMITS - 0 to 50 Deg. C.
APPEARS - if Fct. 1.1.1 MEAS. INST is NORM.
VOLUME.
Fct. 3.5.10 PRES. NORM normal pressure
Enter value for normal/base/reference pressure. This
value is usually 1 atm. Unit options for this value are
the same as in Fct. 3.3.3.
LIMITS - 0.1 to 10 bar
APPEARS - if Fct. 1.1.1 MEAS. INST is
NORM.VOLUME and fluid is not LIQUID.
Fct. 3.5.11 DENS.NORM. density at normal P&T
Enter the density of medium at normal pressure and
temp. conditions. The value can be entered in one of
the following units -
l Kg/m3 l Kg/Litre l Lb/ft3
l Lb/cft
LIMITS - 0.6 to 100 Kg/m 3
APPEARS - if Fct. 1.1.1 MEAS.INST is
NORM.VOLUME and fluid is GAS and medium is
-NONE-
Fct. 3.6.0 OPTIONS
Functions under this submenu allow one to inform
instrument whether pressure sensor and temperature
sensor are installed.
APPEARS - Always.
Fct. 3.6.1 T-SENSOR temperature sensor
Select YES if temperature sensor option is present
else select NO.
LIMITS - Not applicable.
APPEARS - Always
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