HF131PEN_v0501_05
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Active signals 8.1V - 12V and 24V:
If a sensor gives an active signal, please read par. 3.2.3. The detection levels are 50% of the
selected supply voltage; approximately 4V (ACT_8.1) or 6V (ACT_12) or 12V (ACT_24).
Active signal selection may well be desired in the case of options PD-PM being supplied for sensor
supply.
Reed-switch:
The F131-P is suitable for use with flowmeters which have a reed-switch. To avoid pulse bounce
from the reed-switch, it is advised to select REED LP - low-pass filter (read par. 3.2.3.)
NAMUR-signal:
The F131-P is suitable for flowmeters with an Namur signal. The standard F131-P is not able to
power the Namur sensor, as an external power supply for the sensor is required. However, a 8.2V
sensor supply voltage (terminal 11) can be provided via options PD-PM.
