KROHNE VFM 5090 EN - Manual (Page 29)

Fct. 1.1.4 TIMECONST. time constant for flow rate
Enter a low-pass filter time constant in seconds to be
applied to flow rate. A value of zero indicates that
low-pass filter is not to be applied. With this function
it is possible to compromise between a steady
indication (on display/current output) and response
time (to flow changes).
LIMITS - 0 to 20 seconds.
APPEARS - Always.
Fct. 1.2.0 DISPLAY
This submenu groups the display functions which
- Allow selection of units for all measured parameters.
- Select what parameters to include in display cycle.
- Select display mode (cyclic/non-cyclic) and error
messages to appear or not to appear in display cycle.
APPEARS - Alwayss
Fct. 1.2.1 FLOW UNITS for display
Select a unit in which flow rate is to be displayed
from the following list of the available units,
depending on programming of Fct.1.1.1MEAS.
INST.
for volumetric flow -
l m3/hr
l m3/min l m3/sec
l Litre/hr l Litre/min l Litre/sec
l ft3/hr l ft 3/min l ft3/sec
l cft/hr l cft/min l cft/sec
l cuft/hr l cuft/min l cuft/sec
l US Gal/hr l US Gal/min l US Gal/sec
l UK Gal/hr l UK Gal/min l UK Gal/sec
l % MAX. FLOW
for normalized volumetric flow -
l Norm.m3/hr l Norm.m3/ min l Norm.m3/ sec
l Norm.L/hr l Norm.L/min l Norm.L/sec
l Sft3/hr l Sft3/min l Sft3/sec
l Scft/hr l Scft/min l Scft/sec
l % MAX. FLOW
For mass flow -
l Kg/hr l kg/min l kg/sec
l T/hr l T/min l T/sec
l Lb/hr l Lb/min l Lb/sec
l % MAX. FLOW
Note that the list is same as for Fct. 1.1.2 except for
an additional unit % MAX. FLOW (to display flow
rate as a percentage of max. flow).
LIMITS - Not applicable.
APPEARS - Always.
Fct. 1.2.2 TOTAL.UNITS totalizer unit for display
Totalized flow may be displayed in one of the
following units.
For volumetric flow -
l m3 l Litre l ft3
l cft l cuft l US Gal
l UK Gal l NO DISPLAY
For normalized volumetric flow -
l Norm.m3 l Norm.L l Sft3
l Scft l NO DISPLAY
For mass flow -
l kg l T l Lb
l NO DISPLAY
Use NO DISPLAY to exclude totaliser for display
cycle.
LIMITS - Not applicable.
APPEARS - Always.
Fct. 1.2.3 TEMP. UNITS for display
The following options exist for temperature unit
l Deg. C l Deg. F l KELVIN
l NO DISPLAY
Use NO DISPLAY to exclude temperature for
display cycle.
LIMITS - Not applicable.
APPEARS - Always.
Fct. 1.2.4 PRES. UNITS pressure unit for display
The following options exist for pressure. Unit with the
suffix _g are gauge pressure units and those without
the same are absolute pressure units.
l Pa l KPa l atm
l Bar l mBar l PSI
l Lbf/ft2 l Kg/cm2 l In. Hg
l mm Hg l mm Water l pa_g
l KPa_g l atm_g l Bar_g
l mBar_g l PSI_g l Lbf/ft2_g
l Kg/cm2_g l In. Hg_g l mm Hg_g
l mm Water_g l NO DISPLAY
Use NO DISPLAY to exclude pressure from display
cycle.
LIMITS - Not applicable.
APPEARS - If Fct. 3.5.1 FLUID is not LIQUID.
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