[© AB Micatrone, mi-302gb_171025] Page 3 of 8
1. INTERNALS
Displays the program versions for the I/O-board
(motherboard) and Operator Interface (display).
No Lead text Min Max Default
P00 SW: I/O
P01 SW: OPI
2. SYSTEM SETTINGS
General settings in MF-PFT
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P03 Display dP
FLOW
dP+FLOW
SRC+CTRL
dP
P04 Damping [s] 0,0 9,9 1,0
P05 Access code 0000 9999 0000
P06 Number of OPI 1 3 1
• P03 Display, select start menu to display. Select-
ing ‘SRC+CTRL’ show the selected source (SRC)
in the PI-controller + control output signal (CTRL).
• P04 Damping, programme, in seconds, the damp-
ing for the pressure output signal.
• P05 Access code, used for activating or deactivat-
ing the code lock, see page 6.
• P06 Number of OPI, number of operator interfaces
connected. See separate instruction.
3-4. OUTPUT 1 och OUTPUT 2
Settings for the two output signals
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P08 Source dP
FLOW
CTRL
dP
P09 Signal V 0..10
2..10
0..10
P10 Signal mA 0..20
4..20
4..20
P11 Source dP
FLOW
CTRL
CTRL
P12 Signal V 0..10
2..10
0..10
P13 Signal mA 0..20
4..20
4..20
MF-PFT has 2 output signals which can be set to either
0..10 Volt, 2..10 Volt, 0..20 mA or 4..20 mA. Both Volt
and mA are simultaneously available for both outputs.
• P08/P11 Source, is used to select which measuring
value/signal (source) to direct as output signal. ‘dP’
is the pressure signal, ‘FLOW’ is the flow signal
and ‘CTRL’ is the control signal from the PI-control-
ler.
• P09/P12 Signal V is used to switch between 0..10
Volt and 2..10 Volt output signal.
• P10/P13 Signal mA is used to switch between
0..20 mA and 4..20 mA output signal.
If the unit is fitted with built-in automatic zero-setting
module MFM-ZP, it is connected to output 2 (Volt or
mA) and the parameter (P12 or P13) is hidden in the
parameter list. It is still possible to use the free output
signal on output 2 for the selected source.
5. PRESSURE
Settings for pressure measurement
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P15 MinCal [Pa]
P16 MaxCal [Pa]
P17 Unit dP Pa / mbar / iwc Pa
P18 Decimals 0 4 0
P19 Min range MinCal
P20 Max range MaxCal
P21 Min out MinRange MaxRange MinCal
P22 Max out MinRange MaxRange MaxCal
P23 Sign dP POS / NEG POS
• P15/P16 MinCal[Pa] / MaxCal[Pa],
The MF-PFT is factory calibrated for a specific
range. The range is written on a label located on
the right side of the enclosure. The calibration is
always in Pascal (Pa). MinCal and MaxCal is the
calibrated pressure range in Pa. These values are
notes and not possible to change.
• P17 Unit dP, Select in which unit to display the
pressure. The alternatives are Pa, mbar or iwc
(inch water column).
• P18 Decimals, Number of decimals to show for the
pressure value. When using Pa as unit it is recom-
mended not to use decimals.
In case any set value is above 32767 regardless of
where the decimal point is placed the adjustment is
not carried out.
E.g. If Set Point = 5000 and one decimal is se-
lected, the adjustment will not work since the value
5000,0 is greater than the allowed max value of
3276,7. Of the same reason, 500,0 cannot be
adjusted to 500,00.
• P19/P20 Min range / Max range
When programming a new unit, min and max limits
in the new unit are displayed in parameter Min
range and Max range. These values are notes and
not possible to change.
• P21 Min out, Lower limit for scaling the output
signal is set in pressure units, e.g. 10 Pa will result
at 10 Pa pressure the min output signal of, 0/2 V
resp. 0/4 mA.
• P22 Max out, Higher limit for scaling the output
signal is set in pressure units, e.g. 90 Pa will result
at 90 Pa pressure the max output signal of 10 V
resp. 20 mA.
• P23 Sign dP, If the transmitter is without zero
crossing, the MF-PFT will indicate a negative pres-
sure similar to positive pressure (i.e. Without nega-
tive sign). When programming Sign dP = ‘NEG’
a negative sign (-) is shown in front of the current
value.
To change the range for the output signal, the Min out
and Max out are programmed. Programmed values
must be in the selected unit (Pa, mbar, iwc). When
scaling, be aware that the accuracy is always in
percent of the factory calibrated pressure range.
To measure and control the flow or velocity it is
necessary to connect the transmitter to flow sensors
with a known formula and k-factor.
