HF127PEN_EL_TA_v0501_04
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Pulse-signal NPN / NPN-LP:
The F127-P-EL is suitable for use with flowmeters which have a NPN output signal. For reliable
pulse detection, the pulse amplitude has to go below 1.2V. Signal setting NPN-LP employs a low-
pass signal noise filter, which limits the maximum input frequency - read par. 3.2.3.
Pulse-signal PNP / PNP-LP:
The F127-P-EL is suitable for use with flowmeters which have a PNP output signal. 3.2V is offered
on terminal 11 which has to be switched by the sensor to terminal 10 (SIGNAL). For a reliable pulse
detection, the pulse amplitude has to go above 1.2V. Signal setting PNP-LP employs a low-pass
signal noise filter, which limits the maximum input frequency - read par. 3.2.3.
A sensor supply voltage of 8.1 -12 or 24V DC can be provided via options PD-PM.
For a signal detection level of 50% of the supply voltage: please refer to “active signals”.