{"product_id":"ph-orp-sensor-yokogawa-fu20-10-t1-npt","title":"pH\/ORP Sensor YOKOGAWA FU20-10-T1-NPT","description":"\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA FU20-10-T1-NPT\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eFU20\u003c\/strong\u003e pH\/ORP combination sensor, operates as a dedicated hardware component for multi-parameter electrochemical liquid analysis within industrial process pipelines.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eFU20-10-T1-NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYOKOGAWA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.90 kg \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eWide-body form factor (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 deg C to 105 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eN\/A (Passive sensor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement\u003c\/td\u003e\n\u003ctd\u003epH, ORP, Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference\u003c\/td\u003e\n\u003ctd\u003eDouble junction (KCl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd\u003ePt1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003e3\/4 inch NPT (Tapered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation and Loop Protocol\u003c\/h3\u003e\n\u003cp\u003eThe FU20-10-T1-NPT utilizes a polymerized saturated KCl reference system, which maintains signal stability in applications prone to reference electrode poisoning. This architecture facilitates integration with 4-20 mA HART loop protocol transmitters by providing distinct analog voltage signals for pH and ORP values. The internal Pt1000 temperature element allows the host transmitter to perform real-time Nernstian slope correction, ensuring measurement accuracy across variable process temperatures. The double junction design provides an effective barrier against electrolyte contamination, extending sensor longevity in harsh process fluids.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 3\/4 inch NPT connection require specific sealant for process isolation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, use an industry-standard PTFE thread tape or compatible liquid sealant suitable for the process chemistry. Ensure that only the threaded portion is exposed to the process, avoiding excessive torque that could compromise the wide-body casing.\u003c\/p\u003e\n\u003cp\u003eQ: How can the reference junction be validated for functionality?\u003c\/p\u003e\n\u003cp\u003eA: Periodic calibration against certified buffer solutions (pH 4.01, 7.00, 10.01) is required. If the slope deviates beyond the transmitter’s allowable window or the response time exceeds 30 seconds for a full-scale change, the sensor or the reference junction may require cleaning or replacement.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the sensor orientation is within 45 degrees of vertical to maintain internal electrolyte contact with the junction.\u003c\/li\u003e\n\u003cli\u003eIf installing in-line, verify that the flow velocity is sufficient to prevent solids accumulation on the membrane, but not high enough to induce mechanical vibration or erosion.\u003c\/li\u003e\n\u003cli\u003eUtilize the integrated 3\/4 inch NPT thread for direct mounting, ensuring 5 full turns of thread engagement to guarantee pressure-tight sealing.\u003c\/li\u003e\n\u003cli\u003eConnect the cable via the variopin interface, ensuring the connector O-ring is seated correctly to prevent moisture ingress at the electrical junction.\u003c\/li\u003e\n\u003cli\u003ePerform a sensor-to-transmitter offset calibration immediately after installation to account for unique field conditions and cable impedance.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49260482363644,"sku":"FU20-10-T1-NPT","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/FU20-10-T1-NPT2.jpg?v=1783474799","url":"https:\/\/www.electronicplc.com\/products\/ph-orp-sensor-yokogawa-fu20-10-t1-npt","provider":"Electronic PLC","version":"1.0","type":"link"}