Proportional proximity sensor
AccuProx high-performance analog inductive proximity sensor generates an electrical signal that varies in proportion to the position to the metal target within its sensing range, as opposed to sending an open or closed signal upon target presence or absence characteristic of traditional inductive prox sensors. The sensing range is three to four times that of typical tubular analog inductive sensors, without compromising accuracy.
Eaton Corp.; Industrial Control Div. : www.eatonelectrical.com