Mechatronic flow sensor
SBY2xx SBG2xx SBN2xx
7
4 Function
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The unit detects the flow rate according to the principle of differential pressure by means of a
permanent magnet and a measuring cell.
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As additional process value the unit detects the medium temperature.
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The unit can be operated in SIO mode (standard input-output ) or in IO-Link mode.
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The unit displays the current process values.
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The unit generates two output signals according to the parameter setting.
4.1 Output OUT1 selection options
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Switching signal flow
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Switching signal temperature
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Frequency signal flow
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Frequency signal temperature
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IO-Link
4.2 Output OUT2 selection options
•
Switching signal flow
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Switching signal temperature
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Analogue signal flow
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Analogue signal temperature
4.3 Switching output
OUTx changes its switching status if it is above or below the set switching limits. Hysteresis or window
function can be selected.
SP
t
Hno
HY
Hnc
rP
1
0
1
0
1
Fig. 1: 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.
GB
