{"product_id":"qgkl-thermischer-massedurchflussmesser-edelstahl","title":"QGKL thermal gas mass flowmeter, stainless steel","description":"\u003cp\u003eThe \u003cstrong\u003eQGKL\u003c\/strong\u003e is a thermal mass flowmeter for gas in stainless steel with colour LCD and thread connection for nominal sizes DN15 … DN50. It is particularly suited to nitrogen and air, oxygen or hydrogen, as the datasheet gives a separate flow range for each of these gases.\u003c\/p\u003e\n\u003cp\u003eThermal diffusion principle with a heated and an unheated resistance thermometer. Flow range \u003cstrong\u003e5 … 705 m³\/h\u003c\/strong\u003e by size and gas, for oxygen about half, for hydrogen less than a tenth of the air range. Dead band ≤ 0.1 m\/s. Accuracy \u003cstrong\u003e≤ 1.5 %\u003c\/strong\u003e, no reference stated, response time 1 s, adjustable. Outputs by version: \u003cstrong\u003etwo switch outputs\u003c\/strong\u003e, PNP, NPN on request, with linear pulse 100 Hz, plus \u003cstrong\u003e4 … 20 mA or 1 … 5 V\u003c\/strong\u003e, alternatively \u003cstrong\u003eRS485\u003c\/strong\u003e. Supply \u003cstrong\u003e18 … 30 V DC\u003c\/strong\u003e. Connection via M12 plug, colour LCD on the device.\u003c\/p\u003e\n\u003cp\u003eBody of stainless steel 304, stainless steel 316 as an option and intended for hydrogen, display housing of engineering plastic. Process connection G1\/2 … G2 as external or internal thread, working pressure ≤ 2.5 MPa with external thread and ≤ 4.0 MPa with internal thread. Medium temperature -20 … +80 °C, protection grade IP65. Explosion protection is not documented. A declaration of conformity is not documented in the datasheet. Before sizing, note: the technical data give 18 … 30 V DC, both wiring diagrams 12 … 30 V DC. The velocity of up to 100 m\/s does not match the range table in m³\/h; the table applies. There is no moulded cable socket for the four-core RS485 version.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSeparate ranges for nitrogen and air, oxygen and hydrogen\u003c\/li\u003e\n\u003cli\u003eStainless steel 304, optionally 316\u003c\/li\u003e\n\u003cli\u003eUp to 4.0 MPa with internal thread\u003c\/li\u003e\n\u003cli\u003eProtection grade IP65\u003c\/li\u003e\n\u003cli\u003eColour LCD with flow, velocity and total\u003c\/li\u003e\n\u003cli\u003eTwo switch outputs plus analogue output or RS485\u003c\/li\u003e\n\u003cli\u003eDead band ≤ 0.1 m\/s\u003c\/li\u003e\n\u003cli\u003eNominal sizes DN15 … DN50, thread G1\/2 … G2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":57453627801926,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/QGKL_produkt.webp?v=1790331873","url":"https:\/\/octogon-sensors.com\/en\/products\/qgkl-thermal-gas-mass-flowmeter-stainless-steel","provider":"octogon GmbH","version":"1.0","type":"link"}