Bently Nevada 330101-00-25-20-12-05

Precision 8 mm Eddy Current Sensor for Critical Machinery

The Bently Nevada 330101-00-25-20-12-05 belongs to the 3300 XL series and performs non-contact vibration and position measurements. This sensor excels at monitoring shaft displacement in turbines, compressors, and pumps. Its design supports critical machinery protection and predictive maintenance strategies.

The probe uses a compact 8 mm tip with an integral cable assembly. A factory-matched configuration ensures consistent linearity without requiring field calibration. This model offers an M10 x 1.5 thread for straightforward installation in bearing housings.

Technical Specifications

Parameter	Specification
Model	330101-00-25-20-12-05
Type	8 mm Proximity Probe
Probe Diameter	8 mm
Overall Case Length	25 mm
Unthreaded Length	20 mm
Cable Length	1.0 meter (integral)
Cable Type	FEP-insulated, shielded
Connector Type	Miniature coaxial ClickLoc™
Thread	M10 x 1.5
Linear Range	2 mm typical
Operating Temp (Probe)	-52 °C to +177 °C
Weight	0.28 kg (probe approx.)
Compliance	API 670, ATEX, CSA, IECEx (05 suffix)

The unthreaded length of 20 mm provides greater mounting depth flexibility compared to flush-mount versions. Therefore, this design accommodates deeper casing configurations in large-frame rotating equipment. The FEP cable insulation offers excellent resistance to oil, moisture, and chemical contaminants.

The integrated eddy current technology delivers high-resolution displacement readings. This sensor reliably detects early wear, imbalance, or misalignment. Consequently, operators reduce unplanned downtime and lower overall maintenance costs.

The 330101-00-25-20-12-05 integrates seamlessly with 3300 XL Proximitors and 3500 monitoring systems. Its intrinsic safety certification (Zone 0/1) makes it suitable for hazardous areas like refineries and chemical plants. Standardized connectors and components simplify spare parts management across multiple installations.