Bently Nevada 330130-080-12-00 Proximity Transducer

Product Overview

The Bently Nevada 330130-080-12-00 proximity transducer combines a probe, an 8.0-meter extension cable, and a proximitor into one complete measurement solution. This integrated system measures shaft vibration and axial position in critical rotating machinery. It directly converts physical displacement into a linear DC voltage signal. Turbine operators depend on this transducer for reliable protection and monitoring applications. Its proven design ensures accurate data acquisition in the most demanding industrial environments.

Technical Specifications

The table below summarizes the complete technical parameters for the Bently Nevada 330130-080-12-00 transducer system.

Parameter	Specification
Product Type	Proximity Transducer System (Probe + Cable + Proximitor)
Compatibility	Bently Nevada 3500 and 3300 monitoring systems
Probe Thread Size	3/4-20 UNF
Probe Length	170 mm (standard length)
Extension Cable Length	8.0 meters (26.2 feet)
Probe Tip Material	Polyphenylene sulfide (PPS) with encapsulated coil
Proximitor Output	-1.5 VDC to -23.5 VDC
Linear Range	2.0 mm (80 mils)
Sensitivity	7.87 mV/µm (200 mV/mil) ±5%
Supply Voltage	-23.5 VDC to -27 VDC at 12 mA
System Weight	Approximately 1.10 kg (complete assembly)
Operating Temperature	Probe: -51°C to +177°C; Proximitor: -35°C to +85°C
Connector Type	Gold-plated 6-pin (both ends)

System Architecture and Components

Probe Design and Mounting Specifications

The Bently Nevada 330130-080-12-00 includes a probe with a 3/4-20 UNF mounting thread and a 170-millimeter overall length. This probe features a PPS tip that houses a precision-wound coil for reliable eddy-current measurement. Its robust construction withstands exposure to steam, oil, and process gases without degrading performance.

Cable Assembly and Signal Transmission

An 8.0-meter extension cable connects the probe to the proximitor within this system. This cable features a fluoropolymer jacket that resists abrasion and chemical attack. Gold-plated 6-pin connectors at both ends ensure a secure, low-impedance electrical path. The Bently Nevada 330130-080-12-00 maintains signal integrity by matching the 50-ohm characteristic impedance required for proper oscillator operation.

Proximitor Signal Processing and Output

The proximitor generates an RF signal to drive the probe’s internal oscillator circuit. It then demodulates the reflected signal to produce a DC voltage proportional to shaft gap. This output voltage ranges linearly from -1.5 VDC at maximum gap to -23.5 VDC at minimum gap. The proximitor delivers a sensitivity of 7.87 millivolts per micrometer with an accuracy of ±5% across the full temperature range.

Measurement Range and Linearity

This transducer offers a 2.0-millimeter linear measurement range suitable for radial vibration monitoring. The system maintains linearity within ±0.5% of full scale when you set the probe gap correctly. This precision enables operators to detect minor shaft movements that signal early bearing wear or imbalance conditions.

Installation and Application

Installing the Bently Nevada 330130-080-12-00 involves threading the probe into a suitable mounting bracket and connecting the cable to the proximitor. You then adjust the probe gap to position the output voltage near -10 VDC for optimal linear range. This transducer supports all common rotating machinery applications including radial vibration, thrust position, and eccentricity monitoring in turbines and compressors.