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H. PRECAUTIONS
H 91
Using the Polar heart rate monitor in a water environment
Your Polar heart rate monitor is water resistant to 20 metres/ 60 feet. To
maintain the water resistance, do not operate the buttons of the wrist
receiver under water.
Heart rate measurement in a water environment is technically demanding
for the following reasons:
Pool water with a high chlorine content and seawater may be very
conductive and the electrodes of Polar transmitter may get short
circuited and ECG signals cannot be detected by the transmitter unit.
Jumping into the water or strenuous muscle movement during
competitive swimming may cause water resistance that shifts the
transmitter on the body to a location where it is not possible to
pick up ECG signal.
The ECG signal strength varies depending on the individuals tissue
composition and the percentage of people who have problems in heart
rate measuring is considerably higher in a water environment than in
other use.
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