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ENGLISH
7 Repair and Maintenance
7.1 Maintenance
The life of this device is 5 years. In order to ensure its long service life, please pay attention to the
maintenance.
•
Please change the batteries when the low-voltage indicator appears.
•
Please take out the batteries if the oximeter will not be used for a long time.
•
The recommended storage environment of the device:
Ambient temperature: -20ºC ~60ºC
Relative humidity 10%~95%
Atmospheric pressure: 50kPa~107.4kPa
•
The oximeter is calibrated in the factory before sale, there is no need to calibrate it during its life
cycle. However, if it is necessary to verify its accuracy routinely, the user can do the verification by
means of SpO2 simulator, or it can be done by the local third party test house.
7.2 Cleaning and Disinfecting Instruction
•
Surface-clean sensor with a soft cloth by wetting with a solution such as 75% isopropyl alcohol, if
low-level disinfection is required, use a 1:10 bleach solution.
•
Then surface-clean by a dampened cloth and let it air dry or wipe it with a cloth.
High-pressure sterilization cannot be used on the device.
Do not immerse the device in liquid.
8 Troubleshooting
Trouble
Possible Reason
Solution
The SpO2 and Pulse
Rate display instable
1. The probe is not clipped correctly
on the ear or tongue.
2. The tail or leg is shaking or the
animal is moving.
1. Clip the probe on ear or
tongue correctly and try again.
2. Let the animal keep calm.
Can not turn on the
device
1. The batteries are drained or almost
drained.
2. The batteries are not inserted
properly.
3. The device is malfunctioning.
1. Change batteries.
2. Reinstall batteries.
3. Please contact the local
service center.
No Display
1. The device will power off
automatically when there is no signal
and no operation for 1 minute.
2. The batteries are almost drained.
1. Normal.
2. Change batteries.
Common Knowledge
1 Meaning of SpO
2
SpO
2
is the saturation percentage of oxygen in the blood, so called O
2
concentration in the blood; it is
defined by the percentage of oxyhemoglobin (HbO
2
) in the total hemoglobin of the arterial blood. SpO
2
is an important physiological parameter to reflect the respiration function; it is calculated by the following
method:
SpO
2
= HbO
2
/ (HbO
2
+Hb)×100%
HbO
2
are the oxyhemoglobins (oxygenized hemoglobin), Hb are those hemoglobins which release oxygen.
2 Principle of Measurement
Based on Lamber-Beer law, the light absorbance of a given substance is directly proportional with its
density or concentration. When the light with certain wavelength emits on human tissue, the measured
intensity of light after absorption, reflecting and attenuation in tissue can reflect the structure character
of the tissue by which the light passes. Due to that oxygenated hemoglobin (HbO
2
) and deoxygenated
hemoglobin (Hb) have different absorption character in the spectrum range from red to infrared light
