Bently Nevada

Bently Nevada, now part of Baker Hughes, is the industry’s leading manufacturer of machinery protection and condition monitoring systems for rotating and reciprocating equipment. Bently Nevada hardware continuously monitors the vibration, position, speed, and temperature of turbines, compressors, pumps, motors, and generators, providing the measurements needed to protect critical machinery from damage and detect developing mechanical faults before they cause unplanned downtime. PLC Direct supplies Bently Nevada hardware for customers sourcing replacement components and installed-base parts to maintain existing Bently Nevada-equipped machinery, monitoring, and protection systems.

Why Choose Bently Nevada Machinery Monitoring Products

Bently Nevada is recognized for machinery monitoring and protection technology that addresses the continuous measurement and protection requirements of critical rotating equipment in process industries and power generation. Bently Nevada hardware is built for applications where reliable, continuous measurement of shaft vibration, axial position, rotor speed, and process parameters is required to protect high-value rotating machinery and provide the early warning data needed to prevent catastrophic mechanical failures.

Bently Nevada monitoring and protection systems are commonly installed in:

• Oil and gas production, refining, and petrochemical facilities with critical turbine and compressor trains

• LNG terminals and gas processing plants with rotating machinery requiring continuous protection

• Power generation plants monitoring steam turbines, gas turbines, and generators

• Offshore platforms with turbine-driven compressor and pump packages

• Pipeline compressor stations with gas turbine and reciprocating compressor monitoring

• Pulp and paper mills, steel mills, and other process industries with critical rotating equipment

• Hydroelectric facilities with hydro turbine and generator condition monitoring requirements

This concentration in critical rotating equipment applications reflects Bently Nevada's design focus on hardware engineered to provide continuous, reliable machinery measurements in environments where a missed protection event or undetected developing fault carries severe operational and financial consequences.

Bently Nevada Products and Solutions

Bently Nevada hardware at PLC Direct covers machinery protection system rack modules, proximity transducer systems, and associated sensing hardware used across installed Bently Nevada monitoring and protection systems. The collection focuses on hardware that supports the maintenance and lifecycle continuity of existing Bently Nevada installations.

Bently Nevada Product Families

• 3500 Series Machinery Protection System: The 3500 is Bently Nevada's flagship rack-based machinery protection platform, providing continuous online monitoring and automatic trip protection for critical rotating machinery. The 3500 system uses a modular rack architecture housing interchangeable monitoring, protection, and interface modules that accept inputs from proximity probes, accelerometers, velocity sensors, and thermocouples to monitor radial vibration, thrust position, differential expansion, eccentricity, speed, temperature, and process parameters. The system is SIL 2 certified for use in safety instrumented system applications and carries ATEX, FM, CSA, and CE approvals for hazardous area installations. Key module types within the 3500 system include power supply modules, communication gateway modules, Keyphasor modules for phase reference and speed measurement, proximitor/seismic monitor modules, tachometer modules, relay modules, temperature monitor modules, and transient data interface modules. Confirmed part numbers in the PLC Direct collection include the 3500-15E (Power Supply Module) and 3500-45E (monitor module).

• 3300 XL Proximity Transducer Systems: The 3300 XL is Bently Nevada's eddy-current proximity transducer platform for non-contact measurement of shaft radial vibration, thrust position, differential expansion, eccentricity, and rotor speed. Each 3300 XL transducer system consists of a proximity probe, extension cable, and Proximitor sensor that together convert the probe's output signal into a conditioned voltage proportional to the gap between the probe tip and the observed shaft surface. The 3300 XL system is the field sensor that feeds measurement signals into the 3500 rack monitoring modules. Confirmed part number series in the PLC Direct collection include the 330930 series (extension cables for the 3300 XL NSv transducer system, confirmed variants 330930-065-00-00, 330930-045-02-05, 330930-040-00-00, 330930-045-01-00, 330930-045-02-00), the 330851 series (3300 XL 25 mm proximity probes, confirmed variant 330851-04-000-027-90-01-00), and the 330909 series (3300 XL NSv short-body proximity probes for tight installation applications, confirmed variant 330909-00-60-10-01-05).

• Proximity Sensors and Transducer Accessories: Bently Nevada's broader sensor portfolio covers proximity probes in multiple sizes and configurations (8 mm, 11 mm, 14 mm, 25 mm) for radial vibration and position measurement, accelerometers and velocity sensors for seismic measurement of bearing cap vibration, Proximitor sensors as the signal conditioning electronics for proximity transducer systems, extension cables in standard and custom lengths, and mounting hardware and accessories. The 330xxx part number series covers the full range of proximity transducer components used in machinery monitoring systems across oil and gas, power generation, and process industry applications.

• Trendmaster and Orbit DCM Online Condition Monitoring Systems: 

  • Bently Nevada’s distributed condition monitoring platforms for plant-wide asset monitoring beyond the critical rotating equipment covered by the 3500 rack system. The Trendmaster system provides continuous online monitoring of general-purpose machinery, including fans, blowers, pumps, gearboxes, and motors, using distributed data-acquisition hardware. The Orbit DCM is Bently Nevada’s newer distributed condition-monitoring platform for plant-wide asset health monitoring, integrated with the System 1 software platform.

• ADRE Portable Vibration Analyzers and Diagnostic Systems: Bently Nevada's ADRE portable data acquisition systems are used for machinery diagnostics, commissioning, and transient analysis. ADRE systems capture high-resolution vibration waveform data from operating machinery to support detailed rotor dynamic analysis, balancing, and fault diagnosis by machinery specialists.

Bently Nevada Products Available on PLC Direct

• 3500 Series Machinery Protection System modules, including power supplies (3500-15E), monitor modules (3500-45E), and associated rack hardware across the full 3500 module range

• 330930 series 3300 XL NSv extension cables in multiple lengths (040, 045, 065 configurations)

• 330851 series 3300 XL 25 mm proximity probes for shaft vibration and position measurement

• 330909 series 3300 XL NSv short-body proximity probes for tight-clearance installations

• Broader 330xxx series proximity transducer system components, including probes, extension cables, and Proximitor sensors across the 3300 XL product range

These products are typically sourced for direct replacement of failed monitoring modules, sensor replacement, and lifecycle support for existing Bently Nevada-equipped machinery protection and condition-monitoring systems.

Lifecycle Support for Bently Nevada Industrial Systems

PLC Direct supports Bently Nevada-equipped facilities by supplying machinery protection and condition-monitoring hardware for active and aging Bently Nevada installations. Our focus is on helping maintenance engineers and procurement teams source the specific Bently Nevada hardware needed to restore a protection channel or condition-monitoring point to service without extended lead times.

Our support coverage includes:

• Hardware for active Bently Nevada 3500 rack protection systems and 3300 XL transducer installations

• Components for older Bently Nevada monitoring system generations still in operation at process facilities

• Select discontinued Bently Nevada monitoring and sensor hardware, subject to availability.

Additional support may include:

• Inventory-backed availability for urgent replacement requirements

• Assistance with part number identification and order verification

• Sourcing support for hard-to-find Bently Nevada 3500 modules and 3300 XL transducer components

• 1-year PLC Direct warranty on all purchased items

PLC Direct supplies Bently Nevada hardware for replacement and maintenance purposes and does not provide machinery monitoring system configuration, calibration, or integration services.