SFAM
44
Festo – SFAM – 1103a English
2.2.2
Colour change
A red- colour change can be set depending on the switch state for Out B. This allows the equipment
state to be seen across large distances.
The following settings can be chosen:
r.On =
Display is red when the switching output is High (1).
Display is blue when the switching output is Low (0).
r.OFF = Display is red when the switching output is Low (0).
Display is blue when the switching output is High (1).
bLUE = Display is blue; the function colour change is switched off.
2.2.3
Standard conditions
The air mass flow measured and output by the SFAM refers to standard conditions. The SFAM is calib-
rated at the factory to the physical standard conditions in accordance with DIN 1343 and the unit to
l/min.
Note
If different standard conditions and / or other units in contrast to the calibrated
measurement range using the unit l/min are used, then there are corresponding
characteristic limits for the analogue output
Tab. 15: in the chapter 11 Technical
specifications.
The following standard conditions can be selected in the menu item [Option],
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
Temperature
[°C]
0
15
20
Tab. 4: Standard conditions
2.2.4
Analogue filter
Using the analogue filter, the filter time constant of all output signals can be set. This changes the ramp
time at the analogue output (
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 6 steps
from d1 = low smoothing to d6 = maximum smoothing. With increasing smoothing, the switch-on /
switch-off time of the switch outputs rises. When it is off, the switch times depend only on the set filter
time constant of the analogue filter(
Fig. 3: ).
