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LCI40
Series IOM
6 oPeration
6.5.11 System Control
Menu C1.4.1 - Function
This menu makes it possible to switch off certain
measuring functions depending on a programmable
process state. When this system state occurs (as set in
Fct. C1.4.2), the following options can be activated:
•
Inactive: system control is off
•
Flow = 0: Flow set to zero
6.5 description of Functions
Menu C1.4.2 - Condition
Selecting the process measurement which activates
the system control. Density and temperature can be
selected.
Menu C1.4.3 – Max limit
Menu C1.4.4 – Min limit
Setting the limit values to activate system control.
Current measuring values outside of this range activate
this function.
6.5.12 2 Ph. threshold (Menu C1.5.3)
The threshold for the 2 phase signal can be set in this
menu item. This makes it possible to output a status
signal indicating the presence of gas bubbles in the
process. There are no default values for this threshold.
This means that the operator must adapt this value to
The 2 phase signal is displayed on the 2nd measuring
page at the bottom with e.g.: 0.02%. If the threshold is
exceeded (C3.4.2), a message is sent via terminals C.
Example Regarding The Detection And Notification Of A Two-Phase Disturbed Flow
(e.g. Gas Bubbles In Paints)
Fct.
Display
Description and setting
B2.14
2 Phase Signal
The 2-phase signal value in % can be read and
transferred to Diagnosis 1.
C1.5.3
2 Ph. Threshold
Only input a value here if an error message is to be
generated.
This error message can be displayed via the status
outputs.
The error message is then indicated on the display as
S: Out Of Specification and
S: 2 Phase Flow indicated on the display.
Caution: Take into account the setting of the error
conditions of the current output!
C1.5.4
Diagnosis 1
Set “2 Phase Signal”.
C3.1.3
Terminals C
Set “Limit Switch”.
C3.4.1
Measurement
Set “Diagnosis 1”.
C3.4.2
Threshold
e.g. set to “2.0 ± 0.2%”.
C3.4.3
Polarity
e.g. set to “Absolute Value”.
C3.4.4
Time Constant
Set as needed.
C3.4.4
Invert Signal
Set as needed.
C6.4.1
2nd Measurement Page
Set “Three Lines”.
C6.4.10
3rd Line Variable
Set “Diagnosis 1”.
C6.4.11
3rd Line Format
Set “X.XX”.
suit his application. This can be done, for example, by
programming the 2 phase signal at the current output
and registering which threshold makes sense for the
respective process for a certain time period.