Bently Nevada 330101-00-20-50-02-05 | 3300 XL 8mm Proximity Probe

The Bently Nevada 330101-00-20-50-02-05 is a high-performance 3300 XL 8mm eddy-current proximity probe, belonging to Bently Nevada’s industry-leading non-contact transducer series. Differentiated from standard linear-range probe models, this variant features wide linear range configuration and special industrial environmental adaptation, designed for shaft radial vibration, axial thrust displacement, rotor position and eccentricity monitoring on critical high-speed rotating machinery. Adopting mature high-frequency eddy-current induction technology, it delivers stable, repeatable analog voltage output without physical contact, eliminating mechanical wear and measurement drift. Equipped with 20-meter factory integrated cable, special customized cable structure and enhanced environmental resistance, it is fully compatible with 3300 XL proximitor sensors and 3500 series TSI protection systems, widely used in power, petrochemical and heavy industrial key equipment safety monitoring and fault diagnosis scenarios.

1. Core Technical Specifications

Full Part Number：330101-00-20-50-02-05

Product Series：3300 XL 8mm High-Range Proximity Transducer System

Measurement Principle：High-frequency eddy-current non-contact electromagnetic induction

Probe Diameter：8mm standard industrial probe body size

Standard Sensitivity：7.87 V/mm (200 mV/mil) factory precision calibrated, consistent series standard sensitivity

Linear Measurement Range：Extended wide linear range, suitable for large displacement swing monitoring scenarios

System Resolution：Ultra-high micro-displacement resolution, capturing subtle rotor vibration and position deviation

Cable Configuration：20-meter factory integrated special customized cable, dedicated environmental grade

Operating Temperature Range：-40℃ ~ +85℃ industrial wide temperature working range

Target Material Adaptation：Standard ferromagnetic metal targets (carbon steel, alloy steel for turbine/compressor rotors)

Shielding Performance：Multi-layer integrated shielding structure, strongly resisting on-site EMI electromagnetic interference and signal crosstalk

Structure Grade：Hermetically sealed stainless steel probe body, oil-proof, dust-proof, corrosion-resistant and anti-aging

System Compatibility：Perfectly matches 330180 series proximitor sensors and 3500/42, 3500/45 TSI monitoring modules

Industry Compliance：Fully compliant with API 670 mandatory standards for machinery protection systems

Certification：CSA, ATEX, IECEx hazardous area explosion-proof safety certification

2. Full Ordering Code Parsing (330101-00-20-50-02-05)

The 330101 series six-segment coding defines complete probe hardware configuration. This model features core upgrades of 50 wide linear range and 05 special cable customization, different from conventional standard versions.

3. Matching System & Supporting Accessories

4. Core Product Advantages

The 330101-00-20-50-02-05 probe is an enhanced customized model of the standard 3300 XL 8mm probe, with prominent advantages in range adaptability and environmental durability. Compared with conventional 05-range standard probes, the 50 extended linear range design effectively solves signal saturation and data overflow faults when monitoring large swing rotors, ensuring full-scale linear and accurate measurement of high-amplitude vibration and displacement. The customized 05-grade special cable has upgraded oil resistance, anti-aging and low-temperature bending performance, adapting to long-term immersion and erosion in turbine oil environments, with far longer service life than ordinary cables.

Adopting non-contact eddy-current measurement principle, the probe has no mechanical friction and wear, achieving long-term stable operation without performance attenuation. The fully sealed stainless steel structure cooperates with multi-layer shielding design to resist on-site dust, oil pollution and strong electromagnetic interference. With 20-meter integrated long cable design, it avoids on-site wiring and welding errors, ensuring consistent signal transmission quality. It meets API 670 and international hazardous area certification standards, supporting 7×24-hour uninterrupted safe monitoring of core industrial equipment.

5. Industrial Application Scenarios

This wide-range enhanced probe is specially suitable for key rotating machinery monitoring scenarios with large rotor displacement and harsh oil-gas environments. In thermal power plants, it is widely used for steam turbine large-thrust displacement, high-vibration swing shaft vibration and rotor eccentricity monitoring, perfectly adapting to large displacement fluctuation of large units during start-stop and load switching. In petrochemical and natural gas industries, it is deployed on high-power centrifugal compressors, turbo-expanders and process pressurization equipment, stably capturing vibration displacement signals under complex working conditions. It is also applicable to heavy-duty generator sets and large industrial pump units, solving the measurement dead zone of standard-range probes in high-amplitude vibration scenarios, and improving the overall accuracy and stability of the TSI protection system.