IFM SI0551, Руководство по эксплуатации

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4
2 Functions and features
2.1 Application area
The unit monitors the flow of liquid media�
2.2 Operating principle flow monitoring
• The unit detects the flow speed to the calorimetric measuring principle and
converts it into an analog output signal (4���20 mA)�
The output signal corresponds to the characteristic curve of the sensor� Like the
row of LEDs it indicates the relative flow velocity within the detection range set.
In case of excess flow (flow velocity exceeds the detection range) the output
signal increases to 20���22 mA�
mA
A: operation display (row of LEDs)
B: flow velocity
C: characteristic curve
D: sensor signal
E: output signal in mA
The unit is delivered with the following factory setting: monitoring range =
5���100 cm/s in water�
The typical response time of the unit is 1���10 s�