Mechatronic flow sensor
SBZ224
9
4.4.2 Temperature monitoring
FOU=OFF
133
272
122
100
252
212
-32
-10
-43
-26
14
-46
UL
Err
Err
OL
FOU=On
[mA]
20
22
21,5
3,5
MAW
MEW
[°C]
[°F]
4
2
1
3
4
5
Fig. 4: Characteristics of the analogue output according to the standard IEC 6094752, temperature
1:
Analogue signal
MAW:
Initial value of the measuring range
2:
Temperature
MEW:
Final value of the measuring range
3:
Measuring range
OL:
Above the display range
4:
Display range
UL:
Below the display range
5:
Detection zone
Err:
Error state
4.5 Frequency output
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).
The frequency signal in case of a fault can be set via the parameter [FOU].