KROHNE IFC 090 Converter EN User Manual

Page 19

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Factory settings 3.2

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

For special applications, for example “pulsating flow”, see Sect. 6.

Instrument operation:
Display versions:

IFC 090 _ / D, operation: refer to Sect. 4 and 5.

Basic versions:

IFC 090 _ / B, operation: refer to Sect. 6.2.

Table of 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

/hr or US Gal/min

totalizer(s)

or US Gal

1.05 Current output I

function

2 directions

range

4 - 20 mA

error message

22 mA

1.06 Pulse output B1

function

2 directions

pulse value

1 pulse/s

pulse width

500 ms

1.07 Status output B2

flow direction

Function

Setting

3.01 Language for display only English
3.02 Flowmeter

diameter

see nameplate

flow direction (see arrow

+ direction

on primary head)

}

3.04 Entry code

3.05 User unit

Liter/hr or US MGal/day

3.06 Application

steady

3.07 Hardware

Terminal B1

pulse output

Terminal B2

status output