Description
Baumer PF20H is a hygienic-design calorimetric insertion flow sensor developed for reliable flow monitoring of liquids in sanitary and food-grade processes. Operating on the thermal dispersion principle, it detects flow by measuring heat transfer from the heated sensor tip to the moving medium. With a polished stainless-steel probe, hygienic process connections, no moving parts, and stable switching performance, PF20H is ideal for CIP/SIP lines, dairy, beverage, pharmaceutical, and clean utility applications requiring dependable flow/no-flow detection.
PF20H — Key Technical Data & Selection Parameters
| Parameter | Specification / Details |
| Measuring Principle | Calorimetric (thermal dispersion) |
| Installation Type | Hygienic insertion type |
| Suitable Media | Liquids (water, milk, beverages, CIP/SIP fluids) |
| Pipe Size Range | Suitable for multiple pipe diameters via insertion depth |
| Flow Measurement Type | Flow monitoring / switching (not volumetric measurement) |
| Output Signals | PNP switching output + IO-Link |
| Supply Voltage | 18…30 V DC |
| Response Time | Fast switching response |
| Process Connection | Hygienic (Tri-Clamp / hygienic adapter options) |
| Probe Material | Polished stainless steel (hygienic finish) |
| Operating Temperature | –10 °C to +100 °C (process dependent) |
| Pressure Rating | Suitable for sanitary pipelines |
| Protection Rating | IP67 / IP69K (model dependent) |
| Typical Applications | Dairy, beverage, pharma, food processing, CIP/SIP systems |



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