KROHNE IFC 020 Converter EN - Manual (Page 18)

Installation and operating instructions IFC 020 3/1
3 Start-up
• Before powering the system, please check that it has been correctly installed according
to Sect. 1 and 2.
• The flowmeter is delivered ready for operational use. All operating data have
been factory set in accordance with your specifications.
Please refer to Sect. 3.2 “factory settings”.
• Power the unit, and the flowmeter will immediately start process flow measurement.
• When powered, the display shows in succession: START UP and READY.
This is followed by display of the current flow rate and/or the current totalizer count
on either a continuous or alternating basis, depending on the setting under Fct. 1.04.
• Refer to Sect. 4 and 5 for operator control of the “display version”.
3.1 Power-on and measurement
3.2 Factory setting
All operating data are factory set according to your order specifications.
If you have not made any particular specifications at the time of ordering, the instruments will be
delivered with the standard parameters and functions listed in the Table below.
To facilitate easy and rapid initial start-up, current output and pulse output are set to process flow
measurement in “2 flow directions”, so that the current flowrate is displayed and the volumetric
flow counted independent of the flow direction. On instruments equipped with a display, measured
values may possibly be shown with a “ – ” sign.
This factory setting for the current and pulse outputs may possibly lead to measuring errors,
particularly in the case of volume flow counting:
for example, if pumps are switched off and a “backflow” occurs which is not within the range of the
low-flow cutoff (SMU), or if separate displays and counts are required for both flow directions.
To avoid faulty measurements, therefore, it may be necessary to change the factory setting of
some or all of the following functions:
– low-flow cutoff SMU, Fct. 1.03, Sect. 5.3
– current output I, Fct. 1.05, Sect. 5.6
– pulse output P, Fct. 1.06, Sect. 5.7
– display (option), Fct. 1.04, Sect. 5.4
Operation see Section 4 and 5.
Standard factory settings
Function Setting
1.01 Full-scale range Q
100%
see nameplate
1.02 Time constant 3 s, for I, S
and display
1.03 Low-flow ON: 1 %
cutoff SMU OFF: 2 %
1.04 Display (option)
flow rate m 3 /hr or US Gal/min
totalizer(s) m 3 or US Gal
1.05 Current output I
function 2 directions
range 4 - 20 mA
error message 22 mA
1.06 Pulse output P
function 2 directions
pulse value 1 pulse/s
pulse width 50 ms
1.07 Status output S flow directions
Function Setting
1.08 Control input off
3.01 Language for display only English
3.02 Flowmeter
diameter see nameplate
flow direction (see arrow
+ direction
on primary head)
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3.04 Entry code no
3.05 User unit Liter/hror USMGal/day
3.06 Application steady
3.07 Measuring point Altometer
3.08 Communication interface off