Pitch systems sit inside the hub under heavy vibration, wide temperature swings and high humidity, demanding very reliable angle feedback. The customer's contact-type potentiometers showed signal jumps at low temperature.
AN-H is contact-free, rated -40 to +125 ℃ and IP67, and held stable output under 5–2000 Hz random vibration in testing. The first 200 units are already grid-connected with the turbines.