Bently Nevada 330905-12-22-05-02-05 Proximity Transducer System

This Bently Nevada proximity transducer system provides complete non-contact displacement measurement for rotating machinery. It integrates a 5 mm probe, extension cable, and Proximitor driver into a single system. Engineers can deploy this system for radial vibration, thrust position, and keyphasor measurements. Its advanced eddy current technology ensures accurate and repeatable readings in demanding industrial environments. The system integrates seamlessly with Bently Nevada 3500 monitoring platforms.

System Components and Configuration

The system comprises a 5 mm proximity probe, a 5.0 meter extension cable, and a Proximitor driver. Each component works together to deliver precise displacement measurements for machine protection. The probe features a stainless steel housing for durability in harsh industrial environments. The driver provides the necessary RF excitation and signal conditioning for accurate readings. This complete system eliminates the need for separate component selection.

Physical Dimensions and Probe Specifications

The probe measures 1.5 inches in length and 0.3 inches in diameter. Its stainless steel housing weighs approximately 0.4 ounces for lightweight installation. The extension cable adds 5.0 meters of reach between the probe and driver. The driver module measures 3.0 inches in height and 1.5 inches in width. The complete system weighs approximately 1.2 pounds for straightforward installation.

Measurement Range and Target Specifications

The system offers a linear measurement range of 0.15 mm to 1.2 mm (6 to 48 mils). It requires a ferrous metal target for proper eddy current operation. The unit maintains stable performance with AISI 4140 steel targets or equivalent materials. The system provides a gap sensitivity of 7.87 V/mm (200 mV/mil) for consistent readings. This performance supports reliable vibration monitoring across various machine types.

Electrical Characteristics and Output Signal

The system operates on a -24 VDC power supply from the monitoring system. It provides a linear output signal of -2 to -18 VDC over the measurement range. The unit achieves a sensitivity of 200 mV/mil for precise displacement measurement. This sensitivity ensures accurate detection of small vibration amplitudes and position changes. The system maintains linearity within ±1% over its calibrated gap range.

Frequency Response and Dynamic Performance

The system delivers a frequency response from DC to 10 kHz for comprehensive vibration analysis. This bandwidth captures both static position changes and dynamic vibration events. The unit responds to target movement within 0.5 microseconds typically. This rapid response enables detection of high-frequency machine vibrations. The system performs effectively at shaft speeds up to 60,000 RPM.

Cable Assembly and Connector Interfaces

The extension cable includes a braided shield for noise immunity in industrial environments. The cable features a jacket resistant to oil, water, and abrasion for harsh conditions. The system terminates in standard 3-pin connectors for secure module attachment. These connectors provide power, signal, and ground connections reliably. The cable includes positive locking mechanisms for vibration-resistant connections.

Temperature Range and Environmental Resistance

The system operates reliably from -51 to 177 degrees Celsius ambient temperature. Its hermetically sealed components resist moisture and contaminant ingress effectively. The unit withstands vibration up to 20 g for demanding machine applications. The system meets NEMA 4X standards for environmental protection. This robust design ensures long-term reliability in continuous monitoring applications.

Technical Specifications Overview