User's Manual

100 Operator’s Manual ZM-520PA/521PA/530PA/531PA
Respiration Measurement
Measuring method: Impedance method
Measuring lead: Between R and F
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NOTE
• The SpO
2
measuring accuracy was tested using the TL-201T, TL-260T, TL-271T and
TL-631T SpO
2
probes. The testing was performed during induced hypoxia on healthy
volunteers (Ethnicity: 10 Caucasians, 2 Africans, 1 Asian and 3 Indians), (Skin: 8 light,
4 medium, 4 dark), (Age: 21 to 34), (5 women and 11 men) under the condition of no
motion. Arterial blood was sampled and measured by a CO-oximeter. The difference
between SpO
2
measured by the SpO
2
probe and functional SaO
2
measured by a CO-
oximeter was calculated using the root-mean-square (rms) method according to ISO
9919: 2005. This measurement accuracy figure represents 2/3 of all test measurements.
• A pulse oximeter tester that generates simulated signals can be used to check the
difference from the design specification, but it cannot be used as a replacement for
human signals for testing accuracy.