turck PS Series - 9 Description of Switching Functions

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10
Pressure Sensors Series PS…
9 Description of switching functions
Hysteresis:
This function ensures a stable swit-
ching status around the adjusted
setpoint, independent of the system-
inherent pressure fluctuations.
The user sets the switching range
through a switchpoint (SP) and a re-
set point (rP).
Window:
Is the range in which the switch assu-
mes a defined switching status.
The user defines the range by setting
an upper window limit (FH) and a lo-
wer window limit (FL).
The hysteresis tolerance between SP and rP or FH and FL is approx. 0.5 % of the
nominal pressure range.
If the switchpoint SP (FH) is changed, the reset point rP (FL) is simultaneously
adapted.
P
FH
1
FL
t
0
1
0
Fno
Fnc
Gutbereich
acceptable range
P
SP
1
rSP
t
0
1
0
Hno
Hnc
Hysterese
hysteresis