Mechatronic flow sensor
SB1xxx SB2xxx SB3xxx SB4xxx SB5xxx SB6xxx SB7xxx SB8xxx SB9xxx
SB03xx
19
10.3.3 Frequency signal
The unit provides a frequency signal proportional to the process value.
The frequency signal is scalable:
•
[FrPx] defines the frequency signal in Hz that is provided when the upper measured value (MEW or
FEPx) is reached.
The measuring range is scalable:
•
[FSPx] defines the lower measured value from which a frequency signal is provided.
– FSPx is only available for temperature measurement.
•
[FEPx] defines the upper measured value at which the output signal has the frequency set under
FrPx.
Minimum distance between FSPx and FEPx:
6.5 % of the final value of the measuring range (flow rate measurement).
20 % of the final value of the measuring range (temperature measurement).
If the measured value is outside the measuring range or in the event of an internal error, the frequency
signal indicated in the following figure is provided.
For measured values outside the display range or in case of a fault, messages are displayed (UL, OL,
Err).
FOU = OFF 0
2
1
3
4
5
FOU = ON 130
120
100
Err
= FrP1
MAW
FEP1
MEW
OL
100 120 130 [% MEW]
[% FrP1]
Fig. 17: Output characteristic frequency output, flow rate
1:
Frequency signal
MAW:
Initial value of the measuring range
2:
Flow
MEW:
Final value of the measuring range
3:
Display range
FEP1:
Frequency end point
4:
Measuring range
FrP1:
Frequency signal (Hz) for upper measured value
5:
Scaled measuring range
OL:
Above the display range
Err:
Error
