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The YSI 550A dissolved oxygen meter features a waterproof IP-67, impact-resistant case and innovative field-replaceable DO electrode modules.

Instrument, cables, probes/sensors included. Replaceable electrodes sold separately. 

 

  • Overview 
  • Specifications 
    Certifications IP-67, CE, High-impact resistance
    Graphic Display Graphic
    Measurement Range Dissolved Oxygen-0 to 500% air saturation/0 to 50 mg/L, Temperature--5 to 45°C
    Multiparameter Yes
    Parameters Measured Dissolved Oxygen, Temperature
    Power 4 alkaline C-cells, Low battery indicator on display, Over 2000 hours at 25°C
    Sampling Yes
    Unit of Measure Temperature-°C, mg/L, Dissolved Oxygen-% air saturation
    User Calibratable Yes
    User Replaceable Yes
    Warranty 3-year instrument; 1-year DO module
    Waterproof IP-67 (even with the battery cover off), floats