Turck FCI-N1/4D04HC22P-AP8X-H1141 Flow Sensor – Inline Sensor with Integrated Processor, Flow sensor for liquid media, Calorimetric principle, Adjustment via potentiometer, LED band, DC 3-wire, 19.2…28.8 VDC, NO contact, PNP output, Connector device, M12 × 1, Operating range 0.01…1 l/min, Sensor made of Hastelloy C22 (2.4602)