Hi Gondrullo.
My suggestion and experience during these years is this system, I have tried everything (and suffered from everything), and this is the best and most economical.
You buy strips of Fixomull Transparent (on the web is relatively economical, you buy the 10 meter box that will give you for a long time -ño-).
You have to make a foam mold that covers the sensor size, the adhseivo.
The sensor's problem is that if you cover it directly, the adhesive fabric takes off, sweat puts it worse, etc ... Feisimol gets.
With this system, what you get is that there is a slight pressure on the adhesive, and it always remains in place, do what you do.
When I take it after 2 weeks ... it is totally stuck, and smooth.Obviously if I leave it 1 day, it begins to take off, but the result is that it has not been wrinkled.
I leave you a photo to get an idea.
I had many problems to keep it in its place, time, etc ... for me, it was the solution these last 2-3 ... Hand of saint.It usually endures in winter the 2 weeks that the sensors last me.And in summer, minimum, 1 week.When I say, I mean the Fixomull Transparent, which takes off the corners, rubbing with clothes, etc.The interior, the sensor, does not move.
All the best