Why does Edge 540 occasionally not calculate Intensity minutes?

Barry G 16 days ago

I use a Garmin HRM every ride. HRM data is captured and saved, but occasionally there is no Intensity Minutes score calculated. Any idea why?

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Garmin - AL 9 days ago +1

There are sevral factors taken into account when calculating Intensity Minutes. Please review the following article for details on how intensity minutes are earned: How Are Intensity Minutes Earned?

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0 Garmin - AL 9 days ago

There are sevral factors taken into account when calculating Intensity Minutes. Please review the following article for details on how intensity minutes are earned: How Are Intensity Minutes Earned?

0 Barry G 8 days ago in reply to Garmin - AL

I use the same Garmin Dual HRM every ride. The ride in question was rated Primary Benefit Tempo. 110 minutes in Zone3 (68%) and 43 mins in zone 4 (26%) I was working hard enough, but Edge 540 didn't calculate anything. It usually does, but this time it didn't.