Hemoglobin (Hb) and Oxyhemoglobin (HbO
2
) in glow & near-infrared zones. Operation principle of
the device is: Photoelectric Oxyhemoglobin Inspection Technology is adopted in accordance with
Capacity Pulse Scanning & Recording Technology, so that two beams of different wavelength of
lights can be focused onto human nail tip through perspective clamp finger-type sensor. Then
measured signal can be obtained by a photosensitive element, information acquired through which
will be shown on screen through treatment in electronic circuits and microprocessor.
Figure 1.
4 Technical Specifications
4.1 Main performance
A. SpO
2
value display
B. Pulse rate value display, bar graph display
C. Pulse waveform display
D. Low-voltage indication: low-voltage indicator appears before working abnormally which is due
to low-voltage
E. Automatically power off function: when the device is under the state of measuring interface . it
will automatically power off within 5 seconds if the finger falls out of probe.
F. The display mode can be changed
G. A pulse rate sound indication
H. With alarm function
I. With SpO
2
value and pulse rate value of storage, the stored data can be uploaded to computers
J. Data can be transmitted to computers
4.2 Main Parameters
A. Measurement of SpO
2
Measuring range: 0%~100%
Accuracy:
When the SpO
2
measuring range is 70%~100%,the permission of absolute error is ±2%;
below 70% unspecified
B. Measurement of pulse rate
Measuring range:30bpm~250bpm
Accuracy: ±2 bpm or ±2% (select larger)
C. Resolution
SpO
2
: 1%, Pulse rate: 1bpm.
D. Measurement Performance in Weak Filling Condition
CMS-50D Plus
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