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871DO Sensor
873DO / EC / RS Analyzer
Foxboro Dissolved Oxygen Products

The Foxboro dissolved oxygen range consists of an 871DO sensor and 873DO analyzer. The 871DO is a rugged dissolved oxygen sensor used for parts-per-million level measurements in industrial and municipal installations. It is a rebuildable style sensor with a tough stainless steel reinforced composite membrane bonded to an easily replaceable membrane cap. When used with the 873DO analyzer, the 871DO offers several diagnostic routines, including membrane fouling, membrane breakage, and loss of internal filling solution. The Foxboro 873DO is a line-powered, dual sensor input dissolved oxygen analyzer. Calibration of the 873DO is quick and simple, achieved by allowing the sensor to stabilize in ambient air. Each 873DO analyzer provides two analog output signals (4-20 mA, 0-10 V, 0-20 mA) and two alarm relays.
  • Rugged sensor with reinforced composite membrane delivers long, reliable life
  • Easily replaceable membrane cap assembly save time for routine maintenance
  • Advanced diagnostics warn if the sensor needs to be serviced
  • Fast and easy air calibration reduces maintenance time and cost
  • Analyzer can accept either one or two sensor signals
  • 24/7 expert technical and application support
  • Aeration basins
  • Industrial waste water treatment plants
  • Municipal waste water treatment plants
  • Aquaculture measurements
    Download & Documents 1 to 11 of 11
    Data Bulletin
    Dissolved Oxygen Electrolyte Solution 0.5M KCL Part Number B0200EB English   2016-04-08       
    Specification guide
    873 Series Electrochemical Analyzers pH, ORP, Ion Selective, Contacting Conductivity, Electrodeless Conductivity, Resistivity, and Dissolved Oxygen English   2018-08-15       
    Model 871DO-C Dissolved Oxygen Sensors and Sensor Accessories English   2016-04-08       
    Customer success story
    Raylo Gilead Success Story English   2017-09-15  summary
    Raylo Gilead Success Story

    Customer Success Story
    Analytical Brochure English   2016-03-03       
    Instruction sheet
    871DO Dissolved Oxygen Sensors and Accessories - Installation and Maintenance English   2016-04-08       
    871DO-C Dissolved Oxygen Sensor Membrane Replacement Kits English   2016-04-08       
    873DO Series Electrochemical Analyzers for Dissolved Oxygen Measurement Style C English   2016-04-08       
    Technical leaflet
    871DO-C Series Dissplved Oxygen Sensors Style B English   2016-04-08       
    871A (pH and ORP) and 871DO (Dissolved Oxygen) Sensor Accessories English   2016-04-27       
    871DO Dissolved Oxygen Sensor used with 873DO Dissolved Oxygen Analyzer English   2016-04-27