SFAM
Festo – SFAM – 2017-09c English
7
1.3
Factory settings
Settings
Menu item
Value/function
[SPEC]
Standard conditions
[Option]
OFF (=DIN 1343)
Physical unit for flow rate
[FLW]
l/min
Filter time constant
[AnA.F]
A.60
Digital filter
[diG.F]
d.2
Physical unit for consumption
[ConS]
l
Switching output
PnP
Security code
[lock]
OFF
[OutA]
Measured variable
FLW (flow rate)
Switching function
[Threshold value comparator]
Switching point
[SP]
40 % FS
Hysteresis
[Hy]
2 % FS
Switching element functions
NO (normally open contact)
Consumption switching impulse
[Ci]
30 l at FS = 1000 l/min
100 l at FS = 3000 l/min
150 l at FS = 5000 l/min
300 l at FS = 10000 l/min
500 l at FS = 15000 l/min
[OutB]
Switching function
[Threshold value comparator]
Switching point
[SP]
60 % FS
Hysteresis
[Hy]
2 % FS
Switching element function
NO (normally open contact)
Change in colour of display
Blue (function deactivated)
Tab. 2
Factory settings
2
Function and application
The SFAM is designed to monitor changes in the flow rate and air consumption/air volume
for suitable
media in piping systems or terminals in industry; for suitable media
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Chapter 11 Technical data.
Thedesign enables stand-alone operation of (SFAM-…-T) or assembly with service units of the MS
series (SFAM-…-M).
Measurement is carried out by means of a thermal procedure. Here, the amount of heat drawn from
aheated surface of the sensor by the medium flowing past it is calculated. Through the amount of heat
removed, the flow rate or accumulated air consumption is determined and shown on the display. The
connection to higher-level systems is implemented through 2 binary outputs (Out A/B) and one
analogue output (Out C). The switching points for both binary outputs are adjustable for flow rate
measurement. To measure air consumption, a consumption switching impulse is adjustable for output
