Polar Support
Polar M51_M52™

Why heart rate monitoring?
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Support for Polar M51_M52
Maintenance

Limited Polar International Guarantee
Terms of limited Polar international guarantee. Terms concern Polar products purchased after 1st of September 2002
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Servicing Your Polar Product
If you are having problems with a Polar product, please go through this troubleshooting list. The problem may be something easily solved.
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Care and Maintenance of Your Polar Product
To maximize the life of your Polar product and keep it in peak condition, please refer to your user manual and observe the points in this document.
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Practical Tips

Abnormal Heart Rate Readings During Exercise
This document explains the background of possible abnormal heart rate readings during exercise.
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Battery empty in the Polar Transmitter
The average battery lifetime of Polar WearLink31 and WearLink W.I.N.D. Transmitters is 2 years and of T31, T31C and T61 Transmitters approx. 2500 hours of use. We recommend that the transmitter battery be checked by a Polar Service Center when the battery of the receiver is replaced.
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Battery Replacement in the Polar Wrist Unit
The estimated average battery life of the Polar wrist unit is 2 year in normal use. We recommend that battery replacement is carried out only by person authorized by Polar Electro Oy
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Checking your heart rate limits
You can easily check the heart rate limits you are using during exercise
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Display is blank or fading in the Heart Rate Monitor
A display has become dim in the Polar HRM i.e. segments in the display are not anymore sharp.
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Fat Burning Percentage
Calculating an estimate of calories expended from fat during a workout.
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Heart rate limits
Setting your heart rate limits automatically.
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How is the Polar Fitness Test carried out
Instructions how to carry out Polar Fitness Test.
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How OwnZone is determined in practice
Instructions to determine your OwnZone.
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How to avoid wrong result in Polar Fitness Test
Instructions for performing the Polar Fitness Test.
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How to Choose the Right Activity Level in Polar Fitness Test
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How to ensure in M21/M22, M51/M52 and M91ti that the file is saved when quitting the exercise
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I can't find my OwnIndex result
Exercise file is needed to find your OwnIndex result in the file.
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Interference caused by fitness equipment
Some exercise machines can cause interference in signal transmission from the chest transmitter to the wrist receiver.
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OwnCal
The OwnCal feature shows your energy expenditure during exercise as well as your accumulated kilocalories to date.
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OwnZone
The OwnZone feature determines an individual and safe light to moderate intensity exercise zone for you.
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OwnZone Advanced
The OwnZone Advanced feature divides the OwnZone Basic area into OwnZone High and OwnZone Low.
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Quick change between OwnZones
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Quick change of user IDs
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Quick guide to your Polar M51/M52
This quick guide gives you a brief overview of your Polar Heart Rate Monitor and its functions.
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Start exercising with your Polar M51/52/61/62/91ti
Follow these step by step instructions to start exercising with your Polar Heart Rate Monitor
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Tip for using OwnZone feature
Practical tips how you can make good use of the OwnZone feature
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Total Exercise Time
Keeping track of your cumulative exercise time.
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What if the Polar Fitness Test does not work out?
Polar Fitness Test has been developed for healthy adults aged 20-65 years.
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Why do OwnZone limits vary?
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You and I
Share your Polar Heart Rate Monitor with a friend and use its personalized features.
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