There are several common reasons why your heart rate monitor (HRM) belt could be transmitting abnormal, irregular or no beats per minute (BPM). If you are experiencing issues, read on.
There are several common reasons why your heart rate monitor (HRM) belt could be transmitting abnormal, irregular or no beats per minute (BPM). If you are experiencing issues, try the following:
1. Improve the electrical connection between your body the the HRM: Moisten the grooved electrodes on the inside of your Garmin Heart Rate Monitor or Polar Bluetooth strap with saliva, water or Electrode gel. Once your body produces sweat, the contact will improve. Scroll down to view a diagram of the heart rate belt.
2. Position: When wearing the HRM, be sure the logo is right side up. Find the best position for your brand of heart monitor on your body. This may take some experimentation. Start with the belt below your pectoral muscles and positioned on your rib cage. Generally, Polar heart belts are positioned higher on your chest while Garmin belts are positioned lower. Nudge your heart belt down or up on your chest. Then try moving it right or left. Try these various adjustments until you locate the best heart monitor position for your body.
3. Snug Fit: Ensure the strap is snug (not too tight) around your chest so that it does not move around on your body during use.
4. Low Battery: Consider replacing your heart rate monitor battery after a year of use or two years after infrequent use. If your BPM shows extremely high or low, this can be indication of a low battery. For the Garmin HRM, be sure to trash this pairing and pair again after the battery has been changed. Read more: Trash and repair Garmin ANT+ HRM and Polar Bluetooth HRM coming soon.
5. Line of Sight: Communication between your iPhone and Android device and sensors (including ANT+ and Bluetooth sensors) work best when both are within line of sight with each other. An example of a potential issue is storing your device in a back pocket or backpack. Your HRM loses line of sight and my not be able to communicate. Consider the Digifit Connect Bike Case for the iPhone or an arm band.
6. Maintenance: Over time, your HRM may experience lowered conductivity or shorting due to sweat residue build up on the electrode and elastic. To prevent this, rinse off the electrodes and elastic strap with water and towel dry regularly. Do not submerge the electronics module. For more information about maintenance, watch Brian’s video Use and Care for Heart Rate Monitor Belts.