FAQ

Q1. What does this proximity sensor measure?
A: It detects the gap between the sensor’s probe tip and a conductive surface (typically a rotating shaft). The electrical signal

it generates changes with distance, allowing monitoring systems to derive vibration, position,

and displacement information.

Q2. What does “8 mm” mean in the product name?
A: “8 mm” refers to the diameter of the probe tip, which defines the sensing geometry and

mechanical size of the proximity transducer in the 3300 XL series.

Q3. How does eddy-current sensing work?
A: The probe generates a time-varying electromagnetic field. As a conductive target

(like a shaft) moves closer or farther, eddy currents induced in the target change

the probe’s coil impedance, producing a voltage proportional

to gap distance.