KROHNE MFC 400 EN - Manual (Page 75)

OPERATION
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75
MFC 400
www.krohne.com 08/2013 - 4002075802 - MA MFC 400 R02 en
C3._.7 Polarity Set polarity; the flow direction in C1.3.2 must be noted!
Select:
Both Polarities (plus and minus values are displayed) /
Positive Polarity (display for negative values = 0) /
Negative Polarity (display for positive values = 0) /
Absolute Value (always displays positive, with both negative and positive
values)
C3._.8 Limitation Limitation before applying the time constant
± xxx … ±xxx%; range: -150…+150%
C3._.9 Low Flow Cutoff Sets the measurement to "0" for low values
x.xxx ± x.xxx%; range: 0.0…20%
(1st value = switching point / 2nd value = hysteresis),
condition: 2nd value ≤ 1st value
C3._.10 Time Constant Range: 000.1…100 s
C3._.11 Special Function Automatic Range;
Select:
Off (switched off) /
Automatic Range (range is changed automatically, extended lower range,
only makes sense in combination with a status output) /
External Range (change by control input, extended lower range; control
input must also be activated)
C3._.12 Threshold Appears only when Fct. C3._.11 "Threshold" is activated between extended
and normal range. The automatic range function always changes from the
extended to the normal range when the 100% current is reached.
The upper 100% value of the hysteresis is then = 0. The threshold is then the
hysteresis value, instead of "Threshold ± Hysteresis" as shown in the
display.
Range: 5.0…80%
(1st value = switching point / 2nd value = hysteresis),
condition: 2nd value ≤ 1st value
C3._.13 Information Serial no. of the I/O board, software version no. and production date of the
circuit board
C3._.14 Simulation Sequence see B1._ current output X
C3._.15 4mA Trimming Trimming of the current at 4 mA
Reset to 4 mA restores the factory calibration.
Used for HART ® setting.
C3._.16 20mA Trimming Trimming of the current at 20 mA
Reset to 20 mA restores the factory calibration.
Used for HART ® setting.
No. Function Settings / descriptions
.book Page 75 Monday, August 26, 2013 9:05 AM