Variometer used in a sentence

Variometer in a sentence as a noun

If one is detected, an error signal is sent to a 3-phase motor in the helix house that rotates the rotor inside the variometer.

Possibly, but iPhone's screen is pathetic in sunlight, and it's speaker is probably not loud enough for variometer beeping.

I see they’re using an audio variometer to determine sink/updraft lift as well as using the solar-powered motor during cruise, and operate it as a glider during landing.