Bently Nevada 330101-00-14-90-02-00 Proximity Probe

Precision Shaft Monitoring for Demanding Rotating Equipment

The Bently Nevada 330101-00-14-90-02-00 serves as a high-performance proximity probe for measuring shaft vibration and position in critical machinery. This 8 mm probe incorporates a tip diameter of 8.1 mm and a case diameter of 14.2 mm for stable mounting in standard brackets. Its overall length reaches 80 mm, with a threaded section of 21.6 mm and an unthreaded portion of 30.5 mm. The device weighs approximately 90 grams and operates on a -24 Vdc negative power supply. This sensor provides continuous relative displacement data for steam turbines, centrifugal compressors, and large pumps.

Electrical Performance and Environmental Robustness

This proximity probe delivers a linear measurement range from 0.25 mm to 2.03 mm with a sensitivity of 7.87 mV/µm. It captures frequencies from 0 to 10 kHz, effectively monitoring both static gap and dynamic vibration signals. The probe tip withstands temperatures from -35°C to +177°C, while the extension cable remains functional up to +260°C. Such thermal resilience ensures consistent readings in harsh industrial settings. The included 14.0 meter cable features a polyurethane jacket that resists oils, hydraulic fluids, and mechanical wear.

Detailed Technical Specifications

System Components and Wiring Interfaces

This probe system includes the probe body, a 14.0 meter extension cable, and two coaxial connectors for simplified field installation. The integral connector at the probe end provides a sealed barrier against moisture and particulate ingress. A terminal block at the driver side accepts standard 22 AWG wires for connecting power and signal lines. The system stores negligible internal energy, supporting intrinsic safety approvals for hazardous area deployment. Users can integrate this probe with the Bently Nevada 3300 XL Proximitor or the 3500 Monitoring System for comprehensive vibration analysis.

Installation Guidance and Maintenance Practices

Installing this proximity probe requires a 14 mm wrench and standard mounting brackets designed for the threaded case. The threaded body enables precise gap adjustments using the provided locking nut mechanism. Regular inspections of the cable jacket and connector integrity will ensure long-term signal reliability. This probe proves particularly effective in predictive maintenance programs where early fault detection prevents costly equipment failures. For optimal accuracy, calibrate the system against AISI 4140 steel reference targets to match factory specifications. The 14.0 meter cable length offers substantial installation flexibility for remote proximitor locations.