{"product_id":"qmka-magnetisch-induktiver-durchflussmesser-hart-rs232","title":"QMKA electromagnetic flowmeter, HART, RS232","description":"\u003cp\u003eThe \u003cstrong\u003eQMKA\u003c\/strong\u003e is an electromagnetic flowmeter for conductive liquids and slurries. It is particularly suited to acids, alkalis, salt solutions, pulp and slurries, as the straight, empty tube has no obstruction, no pressure loss and no moving parts.\u003c\/p\u003e\u003cp\u003eFaraday's law of induction with two electrodes in a magnetic field. Flow velocity \u003cstrong\u003e0.1 … 15 m\/s\u003c\/strong\u003e, settable, accuracy \u003cstrong\u003e± 0.5 % of reading\u003c\/strong\u003e, optionally ± 0.3 % and ± 0.2 %. Conductivity \u003cstrong\u003e≥ 25 µS\/cm\u003c\/strong\u003e. Forward and reverse flow, empty-pipe detection and self-diagnosis with alarm output. Outputs \u003cstrong\u003e4 … 20 mA\u003c\/strong\u003e with optional HART, pulse or frequency, limit alarms, \u003cstrong\u003eRS485\u003c\/strong\u003e and optional RS232. Supply \u003cstrong\u003e220 V AC\u003c\/strong\u003e or \u003cstrong\u003e24 V DC\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eElectrodes 316L, platinum-iridium, Hastelloy B or C, tantalum or titanium, lining neoprene, PTFE, FEP or polyurethane rubber, shell carbon steel, stainless steel to order. Nominal pressure 4.0 MPa up to DN50 down to 0.6 MPa from DN1200, flanges to GB\/T 9119-2000 or JB\/T 81-94. Medium temperature -40 … +180 °C depending on the lining, ambient -25 … +60 °C, protection grade \u003cstrong\u003eIP65\u003c\/strong\u003e or \u003cstrong\u003eIP68\u003c\/strong\u003e. A declaration of conformity is not documented in the data sheet. Before sizing, note: The sheet gives four different nominal size ranges; the sizes that can be delivered have to be settled with the enquiry. The turndown is given as 1500:1, while the velocity span gives 150:1. No temperature limit per lining is given; the order code knows only ≤ 70 °C and ≤ 120 °C.\u003c\/p\u003e\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eNo obstruction, no pressure loss, no moving parts\u003c\/li\u003e\u003cli\u003eFor conductive liquids and slurries\u003c\/li\u003e\u003cli\u003eForward and reverse flow measurement\u003c\/li\u003e\u003cli\u003eEmpty-pipe detection and self-diagnosis with alarm\u003c\/li\u003e\u003cli\u003e4 … 20 mA, optional HART, RS485, optional RS232\u003c\/li\u003e\u003cli\u003eBacklit LCD, readable in direct sunlight\u003c\/li\u003e\u003cli\u003eOne-piece or split version\u003c\/li\u003e\u003cli\u003eProtection grade IP65 or IP68\u003c\/li\u003e\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":57453661356358,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/QMKA_produkt.webp?v=1790331873","url":"https:\/\/octogon-sensors.com\/en\/products\/qmka-electromagnetic-flowmeter-hart-rs232","provider":"octogon GmbH","version":"1.0","type":"link"}