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Using Heart Rate Monitor while Cycling
While riding a bike, please keep your eyes on the road to prevent
possible accidents and injury.
When using the speed sensor, check that you can turn your handlebar
normally and that cable wires for the brakes or gearing do not catch
on the sensor. Check also that the sensor does not disturb pedaling or
the use of the brakes or gearing.
Using the Polar Heart in a Water Environment
Your Polar S120 is water resistant to 160 feet/ 50 meters.
Your Polar S150 is water resistant to 100 feet/ 30 meters.
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 EKG 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 EKG signal.
• The EKG signal strength varies depending on the individual’s 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.
Polar Heart Rate Monitor and Interferance
Electromagnetic Interference
Disturbances may occur near high voltage power lines, traffic lights,
overhead lines of electric railways, electric bus lines or trams, televisions,
car motors, bike computers, some motor driven exercise equipment,
cellular phones or when you walk through electric security gates.
Exercise Equipment
Several pieces of exercise equipment with electronic or electrical
components such as LED displays, motors and electrical brakes may
cause interfering stray signals. To try to tackle these problems,
relocate the Polar wrist receiver as follows:
1. Remove the transmitter from your chest and use the exercise
equipment as you would normally.
2. Move the wrist receiver around until you find an area in which it
displays no stray reading or flashing of the heart symbol.
Interference is often worst right in front of the display panel of
the equipment, while the left or right side of the display is
relatively free of disturbance.
PRECAUTIONS
g
manual S120 150 USA GBR A 30.1.2002, 14:4238
