SFAM
Festo – SFAM – 2017-09c English
11
The following standard conditions can be selected in the menu item [Option]
è
Chapter 5.5.3 Set
special menu [SPEC].
Option
Off
1
2
Standard litres as per
DIN 1343
ISO 2533
ISO 6358
Air pressure (absolute)
[bar]
1.01325
1.01325
1
Air pressure (absolute)
[kPa]
101.325
101.325
100
Temperature
[°C]
0
15
20
Tab. 5
Standard conditions
2.2.4
Analogue filter
With the analogue filter, the filter time constant of all output signals can be changed. This changes the
rise time at the analogue output (
è
Fig. 3 ).
2.2.5
Digital filter
The display values can be smoothed with the digital filter. The degree of smoothing can be set in
6steps from d1 = low smoothing to d6=maximum smoothing. With increasing smoothing, the
switch-on/switch-off time of the switching outputs rises. In case of d.Off, the switching times depend
only on the set filter time constant of the analogue filter (
è
Fig. 3).
Signal flow from the analogue filter and digital filter
Sensor
Raw signals
Analogue
filter
Digital filter
Display
Switching
outputs
Out A/Out B
Analogue
output
Fig. 3
Signal flow from the analogue filter and digital filter
2.2.6
Security code
To protect the setting from unauthorized access, a numerical code of up to 4 digits can be set.
Thesecurity code must be entered each time the settings are changed (EDIT mode and TEACH mode).
2.2.7
Min/max values
In SHOW mode, the min/max values for a flow rate measurement or an air consumption measurement
can be shown and reset
è
Chapter 5.4.
Note
Switching off the supply voltage resets the min/max values.
