Bently Nevada 330105-02-12-05-02-01 3300 XL 8mm System

Overview

The 330105-02-12-05-02-01 belongs to the Bently Nevada 3300 XL series, a family of 8 mm proximity transducer systems. Engineers use this system to measure shaft displacement, position, and vibration on rotating machinery. Consequently, it combines a probe, extension cable, and Proximitor sensor into one calibrated chain.

Key Technical Specifications

The 330105-02-12-05-02-01 ships as a complete 5-meter system with matched components. Moreover, it meets API 670 requirements for radial and axial displacement measurement. The table below lists the core parameters.

Parameter	Specification
Product Type	8 mm proximity transducer system
Series	Bently Nevada 3300 XL
Tip Diameter	8 mm
Linear Range	0.25–2.3 mm (10–90 mils)
Scale Factor	7.87 mV/µm (200 mV/mil)
Frequency Response	0 to 10 kHz
Total System Length	5 meters (16.4 ft)
Probe Cable Length	1.0 meter (3.3 ft)
Extension Cable Length	4.0 meters (13.1 ft)
Operating Temperature	–35 °C to +177 °C
Storage Temperature	–40 °C to +200 °C
Probe Tip Material	Polyphenylene sulfide (PPS)
Case Material	316 stainless steel
Weight	Approximately 0.6 kg (1.3 lb) total
Mounting Thread	3/8-24 UNF
Connector Type	ClickLoc coaxial
Compliance	API 670, CE

Installation and Interface Details

Mounting the 330105-02-12-05-02-01 requires a 3/8-24 UNF threaded hole in the bearing housing. The probe then connects to the extension cable through a ClickLoc coaxial connector. Furthermore, the Proximitor sensor links the chain to the monitoring system. As a result, technicians install a matched system without field calibration.

Measurement Principle and Output

The probe generates an eddy-current field at its tip, which interacts with the conductive shaft surface. Changes in gap distance modulate this field, producing a voltage output. Additionally, the 7.87 mV/µm scale factor ensures precise displacement readings across the linear range. Therefore, the system delivers reliable data for vibration monitoring and axial position control.

Environmental and Mechanical Ratings

The PPS tip resists high temperatures up to +177 °C. Meanwhile, the 316 stainless steel case withstands corrosive industrial atmospheres. The sealed construction also tolerates moisture and oil exposure. Consequently, the system performs well in steam turbines, compressors, and hydroelectric generators.

Why Engineers Choose This System

This system offers several practical benefits. First, it arrives fully matched and calibrated from the factory. Second, it provides a wide linear range for large shaft movements. Third, its robust construction extends service life in harsh environments. Therefore, maintenance teams reduce downtime and replacement costs.