SB1xxx SB2xxx SB3xxx SB4xxx SB5xxx SB6xxx SB7xxx SB8xxx SB9xxx SB03xx
Mechatronic flow
sensor
16
u
Change parameter settings in the software.
u
Write parameter settings to the unit.
Notes on parameter setting
Ò
Manual of the parameter setting software
10.3 Output functions
10.3.1 Switching signal
A switching signal can be output for process value monitoring. OUTx changes its switching state when
the set switching limits are exceeded or not reached. You can choose between hysteresis and window
function.
Hysteresis function:
SP
t
Hno
HY
Hnc
rP
1
0
1
0
1
Fig. 13: Hysteresis function
1:
Process value
t:
Time
SP:
Set point
rP:
Reset point
HY:
Hysteresis
Hno:
Hysteresis function NO (normally open)
Hnc:
Hysteresis function NC (normally closed)
When the hysteresis function is set, the set point [SP] and the reset point [rP] are defined. The
rP value must be lower than the SP value. The distance between SP and rP is at least 0.6 % of
the final value of the measuring range (= hysteresis). If only the set point is changed, the reset
point is changed automatically; the difference remains constant.
Window function:
FE
FE
FH
HY
HY
t
Fno
Fnc
FL
1
0
1
0
1
Fig. 14: Window function
1:
Process value
t:
Time
FH:
Upper limit value
FL:
Lower limit value
HY:
Hysteresis
FE:
Window area
Fno:
Window function NO (normally open)
Fnc:
Window function NC (normally closed)
When set to the window function the upper limit value [FH] and the lower limit value [FL] are
defined. The distance between FH and FL is at least 0.6 % of the final value of the measuring
range. FH and FL have a fixed hysteresis of 0.25 % of the final value of the measuring range.
This helps keep the switching status of the output stable if the flow rate varies slightly.
10.3.1.1 Parameter setting via unit keys: Switching signal
ü
Standard unit of measurement is selected: [EF] > [CFG] > [uni.x].
ü
Process value for OUTx is selected: [EF] > [CFG] > [SELx].
