Bently Nevada Vibration Sensor 330101-00-20-90-12-05

The Bently Nevada 330101-00-20-90-12-05 is a 3300 XL Series 8 mm Eddy Current Proximity Probe in the standard mount configuration. It is designed for non-contact vibration, displacement, and speed/Keyphasor® measurements on rotating machinery such as turbines, compressors, pumps, and generators.

Key Specifications

Parameter	Details
Series	3300 XL 8 mm Eddy Current Probe System
Mounting Type	Standard Mount
Thread Size	3/8-24 UNF
Case Length	2.0 inches (approx. 50.8 mm)
Unthreaded Length	0.0 inches (flush-mount design)
Total Cable Length	9.0 meters (approx. 29.5 feet)
Cable Type	FluidLoc® cable (prevents fluid ingress along the cable)
Connector Type	ClickLoc® micro-coaxial connector
Hazardous Area Approvals	CSA, ATEX, IECEx certified
Primary Applications	Radial vibration/position monitoring, axial (thrust) position monitoring, speed/Keyphasor measurement

Model Number Breakdown

Each segment of the part number defines a specific configuration:

Segment	Meaning
330101	Base model — 3300 XL 8 mm Standard Mount Probe
00	Unthreaded length = 0.0 inches
20	Case length = 2.0 inches
90	Total cable length = 9.0 meters
12	FluidLoc® cable with ClickLoc® connector
05	Hazardous area certification (CSA, ATEX, IECEx)

System Compatibility & Installation Notes

System Requirement: This probe must be used with a matching 3300 XL extension cable and Proximitor® driver to form a complete sensor system. The total electrical length of the entire probe–extension cable–driver loop must be properly matched (9.0 m system length in this case).
Mechanical Fit: The 0.0-inch unthreaded length means the probe is designed for flush mounting. Confirm that your machine has a compatible 3/8-24 UNF threaded mounting hole before installation.
Differentiation: Be careful not to confuse this with the 330105 (reverse mount) model, which has a different mechanical profile and is not interchangeable.