Bently Nevada 330103-00-05-10-02-00 | 3300 XL 8mm Extended Tip Proximity Proximity Probe

When standard-length proximity probes cannot penetrate bearing housings, casings or pipeline barriers to reach rotor measurement surfaces, the Bently Nevada 330103-00-05-10-02-00 extended tip eddy current sensor becomes the practical hardware solution within the 3300 XL transducer ecosystem. Unlike 330101 straight probes and 330102 threaded body probes, the 330103 series integrates an elongated sensing tip, designed to navigate confined, recessed installation spaces common on steam turbines, centrifugal compressors and turbo machinery. This specific variant ships with 5 meters factory moulded cable and 10mm extended tip configuration, retaining the industry-standard 7.87 V/mm sensitivity required for seamless integration with 330180 proximitor assemblies and 3500 series rack monitoring hardware. Engineers frequently select this probe for retrofit projects where equipment castings are prefabricated with deep mounting bores that block regular-length sensors.

Key Physical & Electrical Characteristics

Complete Part Number: 330103-00-05-10-02-00

Product Line: 3300 XL 8mm Extended Tip Proximity Transducer System

Sensing Principle: High-frequency eddy current non-contact induction

Probe Diameter: 8 mm

Tip Specification: 10 mm extended tip for deep bore installation

Calibrated Sensitivity: 7.87 V/mm (200 mV/mil)

Linear Operating Range: 0–2 mm (0–80 mil)

Integrated Cable Length: 5 m

Working Temperature Range: -40 ℃ ~ +85 ℃

Compatible Target Material: Ferromagnetic steel alloy rotors

Housing Construction: Hermetically sealed stainless steel assembly, resistant to turbine oil mist, dust and ambient moisture

Certifications: ATEX, IECEx, CSA hazardous area approvals

Breakdown of 330103 Series Order Suffix Codes

Each segment within 330103-00-05-10-02-00 defines mechanical features, cable specifications and electrical setup, eliminating guesswork during system configuration:

Required Matching Components For Complete Measurement Chain

An eddy current probe cannot operate independently; the full monitoring loop requires coordinated hardware:

• 330180 series proximitor sensor: Converts gap signal to linear analog voltage output

• 330130 extension cables: Deployed when additional wiring distance is necessary

• Custom extended-tip mounting hardware: Locking nuts and gaskets sized for recessed bore installation

• 3500/42 or 3500/45 rack module: Captures vibration and thrust position signals for protection interlocks

Unique Advantages of Extended Tip 330103 Probes

The primary competitive advantage of the 330103 variant lies in its extended tip geometry. Many original equipment turbine and compressor casings feature deep, narrow mounting holes. Ordinary 330101 and 330102 probes stop short of the rotor surface, creating impossible gap adjustment conditions. The 10mm elongated sensing section reaches through casting openings to establish the correct working clearance without modifying mechanical housings, drastically lowering retrofit construction costs.

The 5-meter integrated cable fits compact equipment layouts where control panels are mounted adjacent to rotating equipment. Factory continuous cable moulding removes field splices, a common source of signal drift and intermittent faults in TSI monitoring systems. Like all 3300 XL transducers, the non-contact measurement principle removes contact wear risks, supporting multi-year continuous online monitoring without routine sensor replacement.

Typical Field Implementation Scenarios

Plant maintenance and automation teams select this probe mostly for machinery retrofits. In thermal power facilities, it serves steam turbine bearing housing vibration and thrust position measurement where original mounting holes are deeply recessed inside cast metal structures. Petrochemical operators install the 330103-00-05-10-02-00 on medium-speed centrifugal compressors and expanders built with internal confined installation channels. It also sees frequent use on large industrial blowers and process pumps with enclosed bearing brackets that block standard-length probes.

This extended tip design is especially valuable during unit overhauls. Operators avoid costly machining or casing modification work, making it a preferred drop-in upgrade solution for aging TSI systems that originally used discontinued older-generation proximity sensors.