{"product_id":"qfka-flugelrad-durchflussmesser-bis-vier-schaltpunkte","title":"QFKA impeller flow sensor, up to four switch points","description":"\u003cp\u003eThe \u003cstrong\u003eQFKA\u003c\/strong\u003e is an impeller flow sensor with temperature measurement for nominal sizes from DN10 to DN32. It is particularly suited to monitoring tasks where up to four switch points plus flow and temperature as 4 … 20 mA are required.\u003c\/p\u003e\u003cp\u003eImpeller principle, flow velocity \u003cstrong\u003e0.15 … 6 m\/s\u003c\/strong\u003e, flow rate \u003cstrong\u003e3 … 250 L\/min\u003c\/strong\u003e by size, linear accuracy \u003cstrong\u003e± 1.0 % F.S.\u003c\/strong\u003e, repeatability ± 5 % F.S., temperature range 0 … 100 °C with ± 1.5 °C. Outputs: two or four switch points PNP or NPN with freely settable upper and lower alarm value, \u003cstrong\u003e2 × 4 … 20 mA\u003c\/strong\u003e for flow and temperature, pulse output for flow. Supply \u003cstrong\u003e16 … 30 V DC\u003c\/strong\u003e, connection \u003cstrong\u003eM12 × 1\u003c\/strong\u003e, 8-pin with analog output, otherwise 5-pin. LCD with three keys.\u003c\/p\u003e\u003cp\u003eSensor body of POM, aluminium or stainless steel, O-ring FPM or EPDM, impeller of PP, bearing and shaft of ZrO2 ceramic, titanium alloy or Hastelloy C. Pressure for the POM body 14 bar at 25 °C and 1.7 bar at 100 °C. Process connection G or Rc thread, internal or external, 1\/2\" … 1-1\/4\". Medium temperature 0 … 100 °C, protection \u003cstrong\u003eIP67\u003c\/strong\u003e. A declaration of conformity is not documented in the datasheet. Before sizing, note: the technical data give DC 5 … 24 V, all wiring diagrams 16 … 30 V DC. No pressure is documented for the aluminium and stainless steel bodies. At ± 5 % FS the repeatability is five times the linearity error; the value has to be settled with the enquiry.\u003c\/p\u003e\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eFlow and temperature measurement in one device\u003c\/li\u003e\u003cli\u003eUp to four switch points PNP or NPN\u003c\/li\u003e\u003cli\u003eTwo analog outputs 4 … 20 mA\u003c\/li\u003e\u003cli\u003eAlarm values freely settable on site\u003c\/li\u003e\u003cli\u003eLinear accuracy ± 1.0 % F.S.\u003c\/li\u003e\u003cli\u003eSensor body of POM, aluminium or stainless steel\u003c\/li\u003e\u003cli\u003eBearing and shaft of ZrO2 ceramic, titanium or Hastelloy C\u003c\/li\u003e\u003cli\u003eProtection IP67\u003c\/li\u003e\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":57453643759942,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/QFKA_produkt.webp?v=1790331840","url":"https:\/\/octogon-sensors.com\/en\/products\/qfka-impeller-flow-sensor-up-to-four-switch-points","provider":"octogon GmbH","version":"1.0","type":"link"}