Bently Nevada 330703-000-050-10-01-00 3300 XL 11 mm Probe

Overview

The 330703-000-050-10-01-00 belongs to the Bently Nevada 3300 XL series, a family of 11 mm proximity probes. Engineers use this probe to measure shaft displacement, position, and vibration on rotating machinery. Consequently, it pairs with 3300 XL extension cables and Proximitor sensors to form a complete measurement chain.

Key Technical Specifications

The 330703-000-050-10-01-00 features an 11 mm tip diameter and a 0.5-meter integral cable. Moreover, it meets API 670 requirements for radial and axial displacement measurement. The table below lists the core parameters.

Parameter	Specification
Product Type	11 mm proximity probe
Series	Bently Nevada 3300 XL
Tip Diameter	11 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
Probe Cable Length	0.5 meter (1.6 ft)
Total System Length	5 meters with extension cable
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 0.15 kg (0.33 lb)
Probe Diameter	11 mm
Mounting Thread	3/8-24 UNF
Connector Type	ClickLoc coaxial
Compliance	API 670, CE

Installation and Interface Details

Mounting the 330703-000-050-10-01-00 requires a 3/8-24 UNF threaded hole in the bearing housing. The probe then connects to a 3300 XL extension cable through a ClickLoc coaxial connector. Furthermore, the integral 0.5-meter cable simplifies routing inside compact machinery enclosures. As a result, technicians achieve consistent scale factors 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 probe performs well in steam turbines, compressors, and hydroelectric generators.

Why Engineers Choose This Probe

This probe offers several practical benefits. First, it provides a wide linear range for large shaft movements. Second, it integrates seamlessly with 3300 XL Proximitor sensors. Third, its robust construction extends service life in harsh environments. Therefore, maintenance teams reduce downtime and replacement costs.