Invacare - Check O2 Plus
by Invacare

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 Oxygen Monitor 

Designed with technicians in mind. Measure oxygen purity, flow rate and outlet pressure all in one, simple, two-button device without the need for in-field calibration. Three measurements rolled into one oxygen analyzer for ultimate convenience.

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5 years ago

I have an Invacare IRC 400 Check O2 Plus that is reading off on the flows. No longer supported. When I opened the case, there are jumper blocks for Gain, Offset, Power, and Function. I am wondering if anyone out there knows if it's possible to utilize these to calibrate the flow on this device and has instructions for doing so. Thanks!



  • Automatic shut-off extends battery life
  • Two AA batteries provide over 16,000 readings
  • Includes connection tube
  • Protective boot helps increase product integrity

Additional Specifications

  • Oxygen:
  • Oxygen Measurement Range: 21%-95.6%
  • Flow Settings:
  • Flow Measurement Range: 0-10 LPM
  • Pressure:
  • Pressure Measurement Range: 0.5-50 PSI
  • Product Weight:
  • 6.4 oz.
  • Shipping Product Weight:
  • 1 lb.
  • Warranty:
  • Limited Warranty - 3 Year

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