Compatible with Polar:
CS100s, CS200s, CS300s, CS400s, FS2s, FS3s, FT1, FT2, FT4, FT7, FT40s, FT60s, FT80s, RS300s, RS400s,
Sizing Choices: Measure just under the breasts/chest area
Medium (25-54 Inches)
Large (33-63 Inches)
Small (23-47 Inches)
Coding prevents cross-talk from other electrical devices. Slim, light and waterproof. Transmits your heart rate to your wrist unit ECG (electrocardiogram) accurately. It is suggested that the battery (ce0537) be replaced by Polar.
Great for swimmers - Fully water resistant making them the most effective exercise tools for measuring your heart rate while involved in water sports.
Delivers 2,500 hours of operation, or 5 years of use exercising at 10 hours a week.
If your Polar training computer / sensor is not working:
1. Are you wearing the transmitter correctly?
The transmitter should be worn flat against the skin, Polar logo in upright position.
2. Are the transmitter electrodes thoroughly wet?
Wet with water or conductivity gels.
3. Is the transmitter and the elastic strap clean?
See video instructions.
4. Is the transmitter compatible with your heart rate monitor?
Check list in description.
5. Is the 5 kHz training computer within one meter/ 3.3 feet range from the transmitter?
6. If you have a T31 non-coded transmitter, make sure that there are no other 5 kHz transmitters within one meter/ 3.3 feet radius.
Check here what type of transmission your training computer uses.
7. Are the heart rate signals unusually high or otherwise abnormal?
Relocating the training computer or adjusting the transmitter on your body may help. More information below.
8. Does the ECG signal strength vary?
ECG signal strength varies depending on the individual’s tissue composition. The percentage of people who experience difficulties measuring heart rate is higher in water environment than in normal use.
9. Were you using the training computer in, or near seawater or a swimming pool? Have the buttons been pressed under water?
Seawater and swimming pool chemicals can affect ECG signal reception. DO NOT press buttons under water as it may cause leaking.
10. Is the display frozen?
If the display has frozen, try resetting it. See user manual for instructions.
Erratic or no heart rate signal using the Wearlink transmitter?
If you are having difficulty picking up your heart rate signal with the Wearlink transmitter it may be due to one or more of the following reasons.
The electrode belt must be very clean and the electrodes must be moistened before each use. We would recommend washing the electrode belt regularly in the washing machine to avoid any corrosion building up inside the belt and snaps. It is also very important to disconnect both sides of the belt from the transmitter when not in use. Following regular maintenance will ensure a long lasting electrode belt.
If you are having a problem registering heart rate the first thing you should do is check the electrode belt for any corrosion in or around the snaps on the belt. If you have not been washing the transmitter regularly now would be a good time to start. Chances are you will see some type of corrosion that hopefully a good wash will eliminate. Make sure you do not use a machine dryer and never put the connector in the washing machine or dryer.
If this does not solve your issue, you may need to replace the battery in the transmitter. The Wearlink transmitter is the first Polar transmitter designed to have a user replaceable battery. The battery used in the Wearlink transmitter is a CR2025. Using a coin, open the battery cover by turning it counter clockwise to open. Insert the battery inside the cover with the + side against the cover. Make sure the sealing ring is in the groove to ensure water resistance. Press the cover back into the connector and turn the cover to close.
Interference caused by fitness equipment
Some exercise equipment with electronic or electrical components such as LED displays, motors, and electrical brakes may cause interfering stray signals. However, this type of interference can usually be overcome by relocating the Training Computer.
1. Remove the transmitter from your chest and use the exercise equipment as you would normally.
2. Move the Training Computer around (still in measuring mode) until you find an area in which it displays no stray reading from the exercise equipment, or does not flash the heart symbol.
Interference is often worst directly in front of the display panel of the equipment, while the left or right side of the display is relatively free of disturbance.
3. Place the transmitter back onto your chest and keep the Training Computer in this interference-free area as much as possible. If the Training Computer still does not work with the exercise equipment, it may be electrically too noisy for wireless heart rate measurement.
Average battery life
The average battery lifetime of Polar:
WearLink transmitter is 2 years (1h/day, 7days/week of use)
WearLink transmitter W.I.N.D. battery lifetime is 2 years (3h/day, 7days/week of use)
The following symptoms may be an indication of a battery replacement need:
The heart rate reading does not appear on the receiver display
The heart rate reading stays at the same value for a long time or is erratic
The heart symbol does not blink.
WearLink and WearLink transmitter W.I.N.D. have replaceable batteries.
Care and Maintenance of Your Polar Product
THE WRIST UNIT
The following suggestions help in maintaining the water resistance:
Keep your unit clean.
- Wipe off any moisture before putting the unit away. You may also wash it with mild soap and water solution under running water. Remember not to press any buttons.
- Do not store the unit in non-breathable material (i.e. plastic bag or damp gym bag).
- Do not operate the buttons whilst under water or when wet.
- Keep your unit out of extreme cold (below –10 °C/14 °F) and heat (above 50 °C/120 °F).
IF THE BATTERY RUNS OUT
- The first sign that the battery may be running down is when the display fades. This may become apparent when the digits fade when the back light is used (certain models).
- We recommend that you send your unit to the Polar Service. The rubber seal that ensures water resistance should be checked and the unit should be tested for water resistance every time it is opened.
- Service to your unit by yourself or an unauthorized service may damage your unit.
- Warranty does not cover damage or consequential damage caused by service not authorized by Polar.
Proper care of the transmitter after use ensures longer service life for the transmitter.
- Wash the transmitter regularly after use. T31, T31C, T61 transmitters should be washed with a mild soap and water solution. Dry it carefully with a soft towel after washing.
- WearLink transmitter strap and connector should be rinsed with water. Never store the transmitter when it is wet, and store the strap and connector separately. Sweat and moisture can keep the electrodes wet and the transmitter activated, which shortens the battery life.
- Store your Polar product in a cool and dry place. Make sure that the electrodes do not contact anything damp, such as sport towel or wet elastic strap. Do not store a wet transmitter in any kind of non-breathing material, such as a plastic bag or a sports bag.
- Do not bend or stretch the transmitter. This may damage the electrodes.
- Readjust the elastic strap periodically so that the transmitter fits firmly around the chest.
- Only dry the transmitter with a towel. Hard-handed handling may damage the electrodes.
- Keep your Polar product out of extreme cold and heat. The operating temperature is -10 °C to 50 °C/ 14 °F to 122 °F. Do not expose the Polar prodcut to direct sunlight for extended periods, such as leaving it in a car.
- T31, T31C, T61 transmitters can be washed with mild soap and a gentle brush. If the electrodes appear discoloured, the transmitter needs to be washed. Do not use any alcohol or a solvent based detergent.
WearLink strap and the elastic strap of the T31, T31C and T61 should be washed regularly in a washing machine at 40 °C/104 °F or at least after every fifth use. This ensures reliable measurement and maximizes the life span of the transmitter. Use a washing pouch. Do not soak, spin-dry, iron, dry clean or bleach the strap. Do not use detergent with bleach or fabric softener. Never put the transmitter connector in the washing machine or drier!
- If your T31, T31C or T61 transmitter does wear out, a new one is available at a special replacement cost. Polar recycles used transmitters. (Please note, that this does not apply to WearLink transmitters.)
Abnormal Heart Rate Readings During Exercise
There can be several reasons for abnormal or irregular readings during exercise. Due to the same reasons, heart rate may stay at the same value for a long time or the heart rate stays at zero (0).
1. Poor contact between the skin and the electrodes of the transmitter
For accurate heart rate measurement, the contact between skin and the electrodes should be as good as possible. Polar transmitters measure the ECG signal from the chest, where it is the strongest. The weak heart-generated signals need to be accurately measured before the calculation of the heart rate. It is therefore important to ensure that the contact between the skin and the electrodes is as good as possible. Here are some tips how to ensure good contact:
1.1. Moisten the grooved electrode areas on the back of the transmitter. At the beginning of the exercise session your skin may be dry and the moisture will help ensure better contact. When you start to sweat the contact will improve because the salt in the sweat conducts the electrical signals very well. Saliva is a good conductor as well. However, if you have a WearLink31 or WearLink W.I.N.D transmitter, it is essential that you moisten the electrodes well under the tap water before the exercise.
1.2. Tighten the elastic strap of the transmitter. If the transmitter is loose, the movement of the electrodes disturbs the detection of the ECG signal. If the standard strap does not fit satisfactorily, larger and smaller elastic straps are available as accessories.
1.3. The type of the ECG signal slightly varies from person to person. The form of the ECG signal can depend on form of the chest, the anatomical location and position of the heart, position of the electrodes and the amount of body fat. If the ECG signal is weak, disturbances can more easily spoil the signal. Find the best contact by turning the transmitter left or right, or place it lower or higher. There have been cases where the transmitter detects the heart rate better when it is turned upside down so that the Polar logo is upside down and facing out, or even when attached on the persons back with the Polar logo upside down and facing out.
1.4. For active sports like aerobics or marathons, women can use the accessory Heart Bra which makes the transmitter stay in place better. Ask your local Polar dealer or distributor for the availability of this product.
1.5. Hairy chest may also weaken the contact. Try to find the best possible position for transmitter.1.6. In demanding cases, use conductive electrode lotion or gel to improve the contact. After using them, it is very important to wash the transmitter carefully. However, it is not recommended to use conductive electrode lotion or gel when using the WearLink31 or WearLink W.I.N.D transmitter since the lotion or gel can block the electrode area.
2. Wear and tear of the transmitter
Proper care of the transmitter after use ensures longer service life for the transmitter.
2.1. Wash the transmitter regularly after use. T31, T31C, T61 transmitters should be washed with a mild soap and water solution. Dry it carefully with a soft towel after washing.WearLink31 and WearLink W.I.N.D transmitter connector and strap should be rinsed with water after every use. Dry the connector carefully with a soft towel. Store the WearLink or WearLink+ strap and connector separately.Never store the transmitter when it is wet. Sweat and moisture can keep the electrodes wet and the transmitter activated, which shortens the battery life.
2.2. Store your Polar product in a cool and dry place. Make sure that the electrodes do not contact anything damp, such as sport towel or wet elastic strap. Do not store a wet transmitter in any kind of non-breathing material, such as a plastic bag or a sports bag.
2.3. Do not bend or stretch the transmitter. This may damage the electrodes.
2.4. Only dry the transmitter with a towel. Hard-handed handling may damage the electrodes.
2.5. Keep your Polar product out of extreme cold and heat. The operating temperature is -10 ºC to 50 ºC/ 14 ºF to 122 ºF. Do not expose the Polar product to direct sunlight for extended periods, such as leaving it in a car.
2.6. T31, T31C, T61 transmitters can be washed with mild soap and a gentle brush. If the electrodes appear discoloured, the transmitter needs to be washed. Do not use any alcohol or a solvent based detergent.
2.7. WearLink and WearLink+ straps should be washed regularly in a washing machine at 40ºC/104ºF or at lest after every fifth use. This ensures reliable measurement and maximizes the life span of the transmitter. Use a washing pouch. Do not soak, spin-dry, iron, dry clean or bleach the strap. Do not use detergent with bleach or fabric softener. Never put the transmitter connector in the washing machine or drier!
3. Electromagnetic disturbances
3.1 Transmitters using 5 kHz transmission frequency
Electromagnetic disturbances may occur near high voltage power lines, traffic lights, mp3 player, the overhead lines of electric railways, electric bus lines or tram lines, televisions, car motors, bike computers, some motor driven exercise equipment, cellular phones or when you walk through electric security gates. Check your surroundings and move away from the source of interference, or remove the source of the disturbance.
3.2 Transmitters using 2.4 GHz transmission frequency
- WearLink W.I.N.DDisturbances may occur near high-voltage power lines, traffic lights, mp3 player, 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. Microwave ovens, computers and WLAN base stations may also cause interference. To avoid erratic readings, move away from possible sources of disturbance.
3.3 Disturbance caused by electronical exercise equipmentsExercise equipment with electronic or electrical components such as LED displays, motors and electrical brakes may cause interfering stray signals. To solve these problems, try the following:
1. Remove the transmitter from your chest and use the exercise equipment as you would normally.
2. Move the monitor around until you find an area in which it displays no stray reading or does not flash the heart symbol. Interference is often worst directly in front of the display panel of the equipment, while the left or right side of the display is relatively free of disturbance.
3. Put the transmitter back on your chest and keep the running computer in this interference-free area as much as possible.If the monitor still does not work with the exercise equipment, it may be electrically too noisy for wireless heart rate measurement.
4. The distance between the transmitter and the unit is too great
4.1 Transmitters using 5 kHz transmission frequency
The maximum transmission range between the transmitter and the unit is 1 meter (3 ft). If the distance is greater, the unit may not get all the signals sent from the transmitter. In cases where the transmission range is at it is extremes, for example rowing or biking where the unit is not attached to the wrist, the unit may display the same heart rate for a long time. To avoid this, keep the distance within 1 meter.
5. Signals from more than one Polar Transmitter within 1 meter transmission range Note this is valid only with non-coded 5 kHz transmitter!
In cases where there are more than one transmitter nearer than 1 meter, and you are using the non-coded transmitter, your unit can pick up the signal from all transmitters within the range. This can result abnormal high readings. Even if the other transmitter is coded, and yours is non-coded, your unit may still give an inaccurate reading. To avoid signal crosstalk, keep the distance to the other transmitters.
The coded transmitter and unit system does not pick up the signal from other heart rate monitors. In case of false readings with a coded transmitter and unit, check if the code has been locked. After a successful code search, a frame will appear around the heart symbol on the display (apart from Polar FT40, FT60 and FT80 display). If the frames around the heart cannot be seen start the measurement again and check that you are not near other heart rate monitor users, because they may interfere the code search. Also, high voltage power lines, televisions, mobile phones and other sources of electromagnetic disturbance may interfere with the code search, as well as keeping the unit too close to the transmitter.
Polar FT40, FT60 and FT80 Training Computers do not show a frame around the heart symbol because, unlike other 5kHz-compatible Training Computers, they can only accept coded heart rate signals and therefore no distinction between coded or uncoded transmission is needed.
6. Static electricity, technical sportswear and special conditions
If the humidity of the air is low, or you are exercising in windy conditions (for example high-speed road racing), a fluttering shirt may rub the transmitter and generate static electricity. This causes additional signals, especially if the contact between skin and transmitter is poor. To avoid this:
6.1. Moisten the electrodes before use, or use the conductive lotion or gel
6.2. Use a cotton shirt instead of a synthetic shirt
6.3. Use a tighter shirt to avoid fluttering of the material
6.4. Use the transmitter on a wet shirt
6.5. Wet the shirt
Polar products are not designed to detect arrhythmia or irregular rhythms and will interpret them as noise or interference. The computer in the wrist unit will make error corrections, so that arrhythmia beats are not included in the averaged beats per minute. The blinking heart symbol in the face of the unit, however, will continue to show all heart beats received. In most cases the Polar products will work fine for persons with arrhythmia. 8. Battery of the transmitter is getting empty
The estimated average battery life of the Polar WearLink31 and WearLink W.I.N.D Transmitters is 2 years and other transmitters 2500 hours of use. If the battery of the transmitter is running low, the transmission range decreases and may cause errors similar to the ones listed above in this document.