FAQ

1. What does “330102” mean in the part number?

• The prefix 330102 refers to the model of the probe: in Bently Nevada’s naming scheme, “3301xx” and “33010x” are proximity probe types. In particular, 330102 typically means 3300 XL 8 mm probe with armor (i.e., the armored version). This comes from how Bently defines its part-number scheme in its 8 mm probe datasheet. 

• According to the 3300 XL 8 mm transducer system datasheet: the part number has several sections (“suffix codes”) that define unthreaded length, case length, cable length, connector type, agency approval, etc.

2. What does each segment in the part number “330102‑04‑45‑50‑01‑00” likely represent?

Given typical Bently part‑number format, the segments could break down as follows (using “330102‑AA‑BB‑CC‑DD‑EE” style):

• 330102: model (8 mm XL probe, armored)

• 04: unthreaded length option (probably 0.4 in, but depends on their encoding)

• 45: overall case length (4.5 in) — this matches a known part in the catalog. 

• 50: total length of cable (often 5.0 m) — this also matches common options. 

• 01: connector + cable type (for example, “01” often means ClickLoc connector with connector protector, standard cable) 

• 00: agency approval option (00 = not required) or no special certification. In some part number conventions, “05” is used for CSA / ATEX / IECEx approvals, so “00” could mean “no special agency approvals.” 

Implication: A part number like 330102‑04‑45‑50‑01‑00 would likely mean: 8 mm probe, 4.5″ case, 5.0m cable, standard ClickLoc connector, no special agency approval.

3. What is the measurement principle / how does it work?

These probes are eddy-current proximity sensors. They sense the distance between the probe tip and a conductive target (e.g., a rotating shaft), producing a voltage signal that is proportional to the gap. 

Because of that, they are commonly used for vibration (dynamic) measurement and static position (displacement) measurement