550A Dissolved Oxygen Instrument

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