{"product_id":"sx-crcna-series","title":"SX-CRCNA Series","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cspan\u003eThe SX-CRCNA Series residual chlorine sensor uses a controlled negative-voltage pulse applied between \u003c\/span\u003e\u003cspan\u003ethe polarized electrode and reference electrode to selectively promote the electrochemical reaction of free \u003c\/span\u003e\u003cspan\u003echlorine. The resulting current signal is proportional to free chlorine concentration, enabling accurate \u003c\/span\u003e\u003cspan\u003emeasurement through signal acquisition and analysis. The sensor provides high selectivity, low \u003c\/span\u003e\u003cspan\u003emaintenance requirements, long service life, and reliable performance.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMain Features\u003c\/h2\u003e\n\u003cul type=\"disc\" style=\"margin-top: 0cm;\"\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\" class=\"MsoNormal\"\u003e\n\u003cdiv\u003e\n\u003cspan\u003e RS-485 transmission interface, Modbus-RTU communication \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eprotocol, two-channel communication\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\" class=\"MsoNormal\"\u003e\n\u003cdiv\u003e\n\u003cspan\u003ePower supply and output isolation design to ensure electrical \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003esafety\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\" class=\"MsoNormal\"\u003e\n\u003cdiv\u003e\u003cspan\u003eBuilt-in protection circuit, enhancing anti-interference ability to suitable for harsh environments \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\" class=\"MsoNormal\"\u003e\n\u003cdiv\u003e\n\u003cspan\u003eSimple communication protocol that can output additional \u003c\/span\u003e\u003cspan\u003eelectrode diagnostic information\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\" class=\"MsoNormal\"\u003e\n\u003cdiv\u003e\u003cspan\u003eBuilt-in calibration parameters for easy on-site use and secondary calibration\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Application\u003c\/h2\u003e\n\u003ch3\u003eIndustries Served\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; height: 93.9861px;\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 74.3889px;\"\u003e\n\u003ctd style=\"width: 29.0368%; height: 74.3889px;\"\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eFree (Residual) Chlorine Monitoring in \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eWater Treatment\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 37.7715%; height: 74.3889px;\"\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eDisinfection Process Monitoring\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 33.2861%; height: 74.3889px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTechnical Data\u003c\/h2\u003e\n\u003ctable style=\"width: 99.953%; height: 1271.16px;\" cellpadding=\"0\" cellspacing=\"4\" border=\"0\" class=\"MsoNormalTable\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"break-inside: avoid; height: 63.8125px;\"\u003e\n\u003ctd colspan=\"2\" style=\"width: 99.2326%; height: 63.8125px;\"\u003e\u003cstrong\u003eMeasurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"break-inside: avoid; height: 70.1438px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 70.1438px;\"\u003e\u003cspan\u003eProduct Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 70.1438px;\"\u003e\u003cspan\u003eResidual Chlorine Sensor\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"break-inside: avoid; height: 70.1438px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 70.1438px;\"\u003e\u003cspan\u003eMeasurement Principle\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 70.1438px;\"\u003e\u003cspan\u003eConstant voltage method\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"break-inside: avoid; height: 70.1438px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 70.1438px;\"\u003e\u003cspan\u003eMeasurement Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 70.1438px;\"\u003e\u003cspan\u003e0–20 mg\/L\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"break-inside: avoid; height: 63.8125px;\"\u003e\n\u003ctd colspan=\"2\" style=\"width: 99.2326%; height: 63.8125px;\"\u003e\u003cstrong\u003eAccuracy \u0026amp; Calibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"break-inside: avoid; height: 63.8125px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 63.8125px;\"\u003e\u003cspan\u003eAccuracy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 63.8125px;\"\u003e\u003cspan\u003e±0.02 mg\/L\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.525px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 39.525px;\"\u003eResolution\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 39.525px;\"\u003e0.01 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.8px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 58.8px;\"\u003eCalibration\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 58.8px;\"\u003eBuilt-in calibration parameters; on-site secondary calibration supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 63.8125px;\"\u003e\n\u003ctd colspan=\"2\" style=\"width: 99.2326%; height: 63.8125px;\"\u003e\u003cstrong\u003e\u003cspan lang=\"EN-US\"\u003ePower \u0026amp; Communication\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 70.1438px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 70.1438px;\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 70.1438px;\"\u003e\u003cspan\u003eDC 9–27 V, \u0026gt;1 A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 104.619px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 104.619px;\"\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 104.619px;\"\u003eApprox. 0.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 70.1438px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 70.1438px;\"\u003eDigital Communication\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 70.1438px;\"\u003e\u003cspan\u003eRS-485 \/ Modbus-RTU\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 19.6px;\"\u003eIsolation Strength\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 19.6px;\"\u003e\u003cspan\u003e2500 Vrms\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 63.8125px;\"\u003e\n\u003ctd colspan=\"2\" style=\"width: 99.2326%; height: 63.8125px;\"\u003e\u003cstrong\u003eEnvironmental Conditions\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 63.8125px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 63.8125px;\"\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 63.8125px;\"\u003e\u003cspan\u003e−10 to +110 °C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6688px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 35.6688px;\"\u003e\u003cspan\u003eRequired Flow Rate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 35.6688px;\"\u003e\u003cspan\u003e20–40 L\/h\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6688px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 35.6688px;\"\u003e\u003cspan\u003eIngress Protection\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 35.6688px;\"\u003e\u003cspan\u003eIP68\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 63.8125px;\"\u003e\n\u003ctd colspan=\"2\" style=\"width: 99.2326%; height: 63.8125px;\"\u003e\u003cstrong\u003e\u003cspan lang=\"EN-US\"\u003eMechanical \u0026amp; Materials\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.525px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 39.525px;\"\u003e\u003cspan\u003eHousing Material\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 39.525px;\"\u003e\u003cspan\u003e316L Stainless Steel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 70.1438px;\"\u003e\n\u003ctd style=\"width: 50.217%; height: 70.1438px;\"\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0156%; height: 70.1438px;\"\u003e\u003cspan\u003eΦ13 mm × 120 mm, excluding cable\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCertifications \u0026amp; Compliance\u003c\/h2\u003e\n\u003cp style=\"white-space: nowrap;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0966\/2362\/4490\/files\/b1.3.png?v=1785304108\" alt=\"\" style=\"display: inline-block; vertical-align: middle;\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0966\/2362\/4490\/files\/b1.2.png?v=1785304108\" alt=\"\" style=\"display: inline-block; vertical-align: middle;\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0966\/2362\/4490\/files\/b1.12.png?v=1785404365\" alt=\"\" style=\"display: inline-block; vertical-align: middle;\"\u003e\u003c\/p\u003e","brand":"SensorsX","offers":[{"title":"SX-CRCNA-11（Chlorine range 0-20mg\/L ）","offer_id":52348825469226,"sku":null,"price":589.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/2362\/4490\/files\/SX-CRCNA.png?v=1787824323","url":"https:\/\/sensorsx.com\/products\/sx-crcna-series","provider":"SensorsX","version":"1.0","type":"link"}