{"product_id":"flxa21-yokogawa-2-wire-analyzer-for-dissolved-oxygen-ph","title":"FLXA21 Yokogawa 2-Wire Analyzer for Dissolved Oxygen \u0026 pH","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa FLXA21\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a highly versatile, loop-powered liquid transmitter designed for rigorous online process monitoring. This\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% brand new\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal analyzer utilizes a modular architecture to provide real-time data for pH, ORP, conductivity, and dissolved oxygen. By supporting dual-sensor inputs, the FLXA21 reduces installation costs and cabinet space while delivering the precision required for chemical processing, pharmaceutical manufacturing, and water treatment utilities.\u003c\/p\u003e\n\u003ch3\u003ePart Number Breakdown: FLXA21\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSuffix Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-D\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDigital Sensor Communication\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-A\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAnalog Sensor Input\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-P\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003epH\/ORP Measurement\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-C\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eContacting Conductivity Measurement\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-I\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eInductive Conductivity Measurement\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-D\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDissolved Oxygen Measurement\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDual Sensor Input (Redundant or Differential)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe FLXA21 integrates sophisticated signal processing into a NEMA 4X rated enclosure to ensure stable measurements in corrosive environments.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFLXA21\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMeasurement Parameters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003epH, ORP, Contacting\/Inductive Conductivity, DO\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSensor Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSingle or Dual (Mix-and-match capable)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2-wire Loop-powered (Nominal 24V DC)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHART, FOUNDATION Fieldbus, PROFIBUS PA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP66 \/ NEMA 4X (Stainless Steel or Plastic)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e–20°C to +55°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBacklit LCD with Touch-screen Operation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDiagnostics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eContinuous sensor health \u0026amp; impedance monitoring\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eATEX, IECEx, FM, CSA (Hazardous Area Ready)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe FLXA21 solves critical process analytical challenges through innovative hardware and software design:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduces Total Cost of Ownership:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe dual-sensor input capability allows one FLXA21 to perform the work of two traditional transmitters. Engineers can configure the unit for redundant measurement (safety) or differential measurement (process efficiency), effectively halving the required wiring and hardware footprint.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplifies Calibration and Maintenance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe analyzer features a \"Sensor Wellness\" diagnostic tool. It constantly monitors electrode impedance and reference junctions, notifying operators of sensor aging before a failure occurs. This proactive approach prevents process downtime and accidental chemical over-dosage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStreamlines Field Commissioning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAn intuitive touch-screen interface supports 12 languages and provides step-by-step calibration wizards. This allows field technicians to calibrate pH or conductivity loops quickly without referring to complex paper manuals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnsures Network Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRobust support for HART, PROFIBUS, and FOUNDATION Fieldbus enables seamless integration into existing DCS or PLC networks. This connectivity provides access to advanced secondary variables and diagnostic data remotely.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the FLXA21 support digital sensors from other manufacturers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe FLXA21 optimizes performance when paired with Yokogawa's SENCOM digital sensors. While it supports standard analog sensors via its modular input cards, we recommend using genuine Yokogawa sensors to utilize the full diagnostic and auto-recognition capabilities of the analyzer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I convert a single-channel FLXA21 to a dual-channel unit in the field?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Due to its modular design, you can add a second sensor module to an existing single-channel unit. This flexibility allows facilities to expand their monitoring capabilities as process requirements evolve without replacing the entire transmitter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the unit handle installation in hazardous or explosive environments?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYokogawa offers the FLXA21 with multiple explosion-proof and intrinsically safe ratings, including ATEX, IECEx, and FM. Ensure you select the correct suffix code for your specific zone requirements to maintain facility safety compliance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this unit supplied as brand new?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEvery FLXA21 we ship is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% brand new\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand original, sourced directly from the manufacturer’s supply chain. Each unit undergoes rigorous factory testing and arrives with a Certificate of Origin (COO) and official test reports.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43790759395427,"sku":"FLXA21","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/175_fac9579f-7cc3-452d-a05e-2bd62f3fe8b5.jpg?v=1761206836","url":"https:\/\/www.autocontrolglobal.com\/products\/flxa21-yokogawa-2-wire-analyzer-for-dissolved-oxygen-ph","provider":"AutoControl Global","version":"1.0","type":"link"}