Product Overview
The BENTLY 3300/16-14-01-03-00-00-01 Proximity Probe System represents the gold standard in non-contacting displacement measurement for industrial rotating machinery. Part of Bently Nevada’s 3300 Series monitoring solutions, this dual-element system provides precise radial vibration and axial position data critical for turbine, compressor, and motor reliability. Engineered for extreme environments, the 3300/16 excels in power generation, petrochemical, and aerospace applications where sub-micron accuracy directly impacts equipment lifespan.

At its core, the system combines two 5 mm diameter probes with a 1.5-meter armored cable, enabling simultaneous measurement of shaft eccentricity and thrust bearing wear. The probes’ titanium construction withstands temperatures up to 350°C (662°F), making them ideal for gas turbine exhaust ends and steam turbine casings. When paired with Bently Nevada’s 3500 monitoring rack, the 3300/16-14-01-03-00-00-01 delivers 0.1 micron resolution, detecting early-stage bearing degradation and misalignment weeks before traditional thermography methods.

What distinguishes the BENTLY 3300/16-14-01-03-00-00-01 is its adaptability. The “-14” designation indicates extended temperature range capability, while “-03” denotes MIL-SPEC cable bends for tight installations. The system’s 24 VDC operation and Modbus RTU output ensure compatibility with both legacy and modern control systems, eliminating costly infrastructure upgrades during retrofits.

Technical Specifications

Key Features and Benefits
The BENTLY 3300/16-14-01-03-00-00-01 achieves industry-leading accuracy through its proprietary eddy-current sensor design. The probes’ titanium nitride coating ensures stable performance in hydrogen-rich environments common to refinery crackers, while the Inconel® extension cable resists hydrogen embrittlement. This combination reduces measurement drift by 85% compared to stainless steel alternatives in hydrocarbon processing.

Diagnostic capabilities extend beyond basic displacement monitoring. The system’s built-in self-test function verifies probe-to-target spacing during operation, eliminating false alarms from coating buildup. For steam turbines, the 3300/16’s high-temperature rating enables monitoring of last-stage blades where conventional probes would degrade. The modular design allows hot-swappable replacement of either probe or extension cable without disturbing the entire system.

Interoperability is enhanced through dual-protocol output. The system’s -24 VDC to -2 VDC analog signal interfaces with legacy vibration monitors, while the integrated Modbus RTU port feeds data directly to PLCs or cloud-based analytics platforms. This hybrid approach future-proofs installations during digital transformation initiatives.

Application Scenarios
In a combined-cycle power plant, the BENTLY 3300/16-14-01-03-00-00-01 monitors steam turbine rotor bowing during startup, detecting 0.05 mm (2 mil) deflections that cause excessive casing vibration. By integrating with the plant’s DCS, the system enables controlled ramp rates that extend turbine life by 30%. Similarly, in an ethylene cracker, the probes’ hydrogen-resistant construction ensures reliable monitoring of compressor shaft alignment despite process gas leakage.

The system’s extreme temperature tolerance proves invaluable in gas turbine exhaust diffusers, where it measures casing thermal growth with 0.1 µm resolution. This data enables adaptive control algorithms that maintain 0.05 mm (2 mil) clearance between turbine blades and shrouds, improving efficiency by 1.2%. In offshore wind turbines, the 3300/16’s IP68 rating ensures reliable generator bearing monitoring despite salt spray exposure.

Related Models

• 3300/20 – Dual probe system with integral thermocouple for thermal growth compensation
• 3300/50 – High-temperature variant rated for 450°C (842°F) operation
• 3300/03 – Economy single-probe system for basic vibration monitoring
• 3300/90 – Radial vibration monitor with BNC connector for portable analyzers
• 3300/65 – Seismic transducer interface for casing vibration measurements

Installation and Maintenance
Prior to installing the BENTLY 3300/16-14-01-03-00-00-01, verify target material conductivity (minimum 1.67 MS/m for ferromagnetic metals). Mount probes using the included 5/8″-18 UNF adapter, ensuring 0.13 mm (5 mil) minimum clearance from stationary parts. For high-temperature applications, use Bently Nevada’s ceramic standoff kit to prevent heat conduction through the mounting threads.

For maintenance, perform quarterly calibration checks using a Bently Nevada 3300 XL calibration system. Verify probe-to-target alignment annually using a laser micrometer, as 0.025 mm (1 mil) offset reduces measurement accuracy by 15%. The system’s self-diagnostics should be monitored weekly—address any “Probe Fault” alerts immediately by inspecting cable connections for oxidation. When replacing components, use only Bently Nevada-certified parts to maintain ATEX compliance.

Product Warranty
The BENTLY 3300/16-14-01-03-00-00-01 includes a 36-month manufacturer’s warranty covering defects in materials and workmanship. Baker Hughes provides global technical support through its 24/7 hotline, with guaranteed response times of 2 hours for critical infrastructure clients. For mission-critical applications, extended warranty packages include preventive maintenance visits and priority spare parts dispatch. All repairs undergo rigorous functional testing in ISO 17025-certified labs, ensuring restored modules meet original performance specifications. This comprehensive support framework ensures the 3300/16 delivers decades of reliable machinery protection.