AeroPod, PowerPod and Newton

Hello...How often should a cal ride be done in order to keep the newton properly calibrated?
Should we have any special cleaning for the wind sensor..?...can it get with dirt and dust over the time?
Thank you

Once you calibrate the Newton, you should not need another calibration unless you change the computers position on the bike, or make any drastic change to ride position or bike geometry. We have not had any issues to date, with dirt clogging the windport, however, I suspect some occasional visual inspections of the port to see if it is filling with dirt will not hurt. No special cleaning is necessary.