{"product_id":"foxboro-873rs-aiwfnz-7-electrochemical-analyzers-transmitter","title":"Foxboro 873RS-AIWFNZ-7 Electrochemical Analyzers Transmitter","description":"\u003ch2\u003eFoxboro 873RS-AIWFNZ-7 Electrochemical Analyzers\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro 873RS-AIWFNZ-7\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e873RS\u003c\/strong\u003e Electrochemical Analyzers, operates as a dedicated hardware component for resistivity signal processing and analog output transmission within Foxboro process control architecture platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCode Suffix\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFeature Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eElectrical \/ Physical Specification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e873RS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSeries Base Model\u003c\/td\u003e\n\u003ctd\u003eElectrochemical Resistivity Analyzer \/ Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSupply Voltage and Frequency\u003c\/td\u003e\n\u003ctd\u003e120 VAC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMeasurement Output\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA DC, Isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEnclosure Assembly\u003c\/td\u003e\n\u003ctd\u003eField, Metal, Panel Mounting (IP 21 rated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFNZ\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectrical Certification\u003c\/td\u003e\n\u003ctd\u003eFM Certified, Nonincendive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e7\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOptional Selection\u003c\/td\u003e\n\u003ctd\u003eStorm Door Protective Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003e873RS-AIWFNZ-7\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\u003e2.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Panel Mount Field Enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e10.2 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0-20 Megohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC, isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Outputs\u003c\/td\u003e\n\u003ctd\u003e2 NO \/ NC relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Fuse\u003c\/td\u003e\n\u003ctd\u003e1\/8 Amp Slow-Blow (SB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensor Compensation\u003c\/td\u003e\n\u003ctd\u003e100K Thermistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 2% of reading or +\/- 0.05 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003eLess than 60 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Limit\u003c\/td\u003e\n\u003ctd\u003e0 to 2 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Protection\u003c\/td\u003e\n\u003ctd\u003eIP 21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Galvanic Isolation \u0026amp; CJC Integrations\u003c\/h3\u003e\n\u003cp\u003eThis module relies on isolated 4-20 mA DC measurement circuits to prevent ground loops across dirty field signals and high-density DCS backplanes. Integral temperature compensation loops, including support for 100K thermistor elements, provide active cold junction and process media thermal calibration directly on the analog front-end. The isolation barrier protects internal signal conditioning electronics against common-mode voltage spikes up to the FM nonincendive classification limits.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the rating and form factor of the onboard protection fuse?\u003c\/p\u003e\n\u003cp\u003eA: The module incorporates an internal 1\/8 Amp Slow-Blow (SB) fuse rated for the 120 VAC primary power circuit to prevent overcurrent damage to the internal transformer and signal processing boards.\u003c\/p\u003e\n\u003cp\u003eQ: How does the isolated analog output handle field loop interference?\u003c\/p\u003e\n\u003cp\u003eA: The integrated 4-20 mA DC current output utilizes galvanic channel-to-channel isolation, which breaks ground loops between the transmitter panel and remote DCS analog input cards without requiring external signal isolators.\u003c\/p\u003e\n\u003cp\u003eQ: Does the enclosure rating allow direct outdoor installation without additional covers?\u003c\/p\u003e\n\u003cp\u003eA: The metal field enclosure carries an IP 21 rating and includes a Option 7 storm door assembly, which guards the front display interface against falling drops of water. However, outdoor installations require an auxiliary protective housing to safeguard against wind-blown rain and extreme weather elements.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eWhen installing the unit into a control panel cut-out, maintain a minimum vertical clearance of 50 mm above and below the metal housing to permit natural convective heat dissipation across the enclosure walls. Run all AC power wiring (120 VAC) through separate conduit entry ports isolated from low-voltage instrument signal lines, such as the 100K thermistor sensor wiring and the 4-20 mA DC output loop, to prevent inductive noise coupling. Ensure the instrument ground terminal connects directly to the local earth ground bus via a dedicated, low-impedance conductor. For shield termination, ground instrument cable shields at one single point—typically at the receiver control panel—and leave the field end ungrounded and insulated to avoid ground loop current paths.\u003c\/p\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43969295712346,"sku":"873RS-AIYFNZ-7","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/484._305be8a2-cd46-4ee0-b568-125bee694eef.jpg?v=1788169353","url":"https:\/\/www.spareoil.com\/products\/foxboro-873rs-aiwfnz-7-electrochemical-analyzers-transmitter","provider":"SpareOil Automation","version":"1.0","type":"link"}