KROHNE ALTOFLUX 2W IFM 4042K EN - Manual (Page 17)

Part A Installation and Start-up Section 3.1+ 3.2
02/2001 ALTOFLUX 2W 17
 6WDUWXS
3.1 Power ON and measurement
•
Before powering the system, please check that it has been correctly installed according to
Sections 1 and 2.
•
The flowmeter is delivered ready for operational use. All operating data have been factory-
set in accordance with your specifications.
Please also refer to Section 3.2 “Factory settings”.
•
Power the unit, and the flowmeter will immediately start process flow measurements.
•
When powered, the display shows in succession: START UP and READY. This is followed by
indication of the current flow rate and/or the current counter count, on either a continuous or
alternating basis, depending on the setting under Fct. 1.04.
•
For operator control, refer to Section 4.
3.2 Factory settings
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 devices are
delivered with the standard parameters and functions listed in the table below.
To facilitate easy and rapid start-up, the current output is set to process flow measurement in
“absolute“, so that the current flow rate is displayed independent of the direction of flow. On the
display, measured values may possibly be shown with a “ - ” sign.
This factory setting for the current output may possibly cause measuring errors:
For example, when pumps are switched off and a “backflow“ occurs that is not within the range
of the low-flow cutoff SMU, or when 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. For operator control see Section 4.4:
• Low-flow cutoff SMU, Fct. 1.03
• Display, Fct. 1.04
• Current output, Fct. 1.05
• Pulse output, Fct. 1.06
Standard factory settings
Function Setting Function Setting
1.01 Full scale range Q
100%
see nameplate 1.07 Status output off
1.02 Time constant 3,0 s
1.03 Low-flow cutoff OFF: 0,4 % 3.01 Language English
ON: 0,5 % 3.02 Primary head
1.04 Display Meter size see nameplate
Flow rate Percent Flow direction
Counter m3 (see arrow on primary head) Pos. flow
1.05 Current output 3.04 Application
Function Absolute Empty pipe yes
Range 4 - 20 mA Field current 100-50-25 mA
Error message 22 mA Mode field current two times
1.06 Pulse output Limit 150 %
Function off Filter off
Pulse per volume 1 Pulse / m3 3.05 Hardware Pulse output
Pulse width 50 ms 3.06 HART no