{"product_id":"foxboro-873ec-biyfgz-electrochemical-analyzers","title":"Foxboro 873EC-BIYFGZ Electrochemical Analyzers","description":"\u003cp\u003eThe \u003cstrong\u003eFoxboro 873EC-BIYFGZ\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e873EC-BIYFGZ\u003c\/strong\u003e Electrochemical Analyzer, operates as a dedicated hardware component for non-contact electrodeless conductivity measurement within Foxboro DCS platforms. Operating on a 24 VDC input voltage, this unit converts toroidal sensor inputs across a range of 0 to 2000 mS\/cm into a 4-20 mA analog output signal and Modbus RTU digital communications across an operating temperature range of -10 to 60 deg C.\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\u003e873EC-BIYFGZ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eStandard Panel Mount Unit (~4.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive Sensing Logic (24 VDC Supply Rail)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Type\u003c\/td\u003e\n\u003ctd\u003eElectrodeless conductivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0 to 2000 mS\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eModbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDCS Process Control and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe Foxboro 873EC-BIYFGZ electrochemical analyzer integrates precise signal conversion electronics to interface electrodeless conductivity sensors with 4-20 mA HART loop protocol architectures and Modbus RTU telemetry. Internal input channels incorporate dedicated channel-to-channel isolation to prevent ground loop offsets between field-mounted toroidal sensors and central DCS backplane logic cards. This isolation circuitry suppresses common-mode electrical noise and electromagnetic interference (EMI), stabilizing high-frequency AC drive loops during process liquid conductivity monitoring.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the Modbus RTU interface isolate data transfer from the 4-20 mA analog loop output?\u003c\/p\u003e\n\u003cp\u003eA: The Modbus RTU serial interface operates over an optically isolated RS-485 transceiver circuit, preventing voltage transients on the communication bus from corrupting the primary 4-20 mA analog feedback loop.\u003c\/p\u003e\n\u003cp\u003eQ: Does replacing the 873EC-BIYFGZ analyzer require recalibration of the connected electrodeless probe?\u003c\/p\u003e\n\u003cp\u003eA: Yes, replacing the analyzer module requires verifying the probe zero-point baseline in air and executing a standard loop calibration with known solution standards to map the 0 to 2000 mS\/cm range accurately.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the analyzer securely into the panel enclosure cutout using the provided side mounting brackets.\u003c\/li\u003e\n\u003cli\u003eConnect the primary 24 VDC power supply wires to the designated terminal block, ensuring correct polarity.\u003c\/li\u003e\n\u003cli\u003eTerminate signal wiring for the 4-20 mA output and RS-485 Modbus RTU lines in accordance with cabinet terminal diagrams.\u003c\/li\u003e\n\u003cli\u003eEarth the cable braid shielding directly to the panel chassis ground bar to minimize signal interference.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":53406618157365,"sku":"873EC-BIYFGZ","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/873CC-BIYFGZ_e33fc941-bb79-449d-929f-db2926ec646a.png?v=1787729592","url":"https:\/\/www.5gplc.com\/products\/foxboro-873ec-biyfgz-electrochemical-analyzers","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}