Bently Nevada 3300 XL Proximitor 330180-50-05
Overview
The Bently Nevada 330180-50-05 is a 3300 XL Proximitor Sensor, the signal conditioning module of the 3300 XL eddy-current proximity transducer system used for radial vibration and axial position monitoring on rotating machinery. The Proximitor supplies the probe with radio-frequency power, receives the modulated signal and converts the measured gap into a linear DC voltage for the monitor. The 50 configuration in this part number identifies a 5.0 m system length with panel mounting, and the 330180 family operates with 3300 XL 8 mm proximity probes.
The 3300 XL family is the established standard for eddy-current vibration transducers in the industry, specified on most new turbomachinery and supported by a large installed base. The Proximitor is a serviceable module, and replacing a faulty unit with a verified spare restores the channel without recalibrating the machine. Seven Star LLC stocks and sources the 330180 series against the original Bently part number for maintenance and overhaul programmes.
Engineering and Design
The 3300 XL Proximitor drives the probe tip through a tuned oscillator circuit; as the target surface approaches the tip, eddy current losses change and the oscillator output is converted into a gap-proportional voltage. The 3300 XL 8 mm system provides 7.87 V/mm (200 mV/mil) sensitivity, giving a strong and clean signal for the monitor input. The module is powered from the monitor or a separate -24 Vdc supply, and a test jack on the front lets maintenance staff verify performance from the terminal strip without removing field wiring.
The 330180-50-05 is mounted on a panel inside the control cabinet, close to the probe junction box, with the extension cable routed between probe and Proximitor. The complete 3300 XL system consists of the probe, the extension cable and the Proximitor, and all three parts are ordered as a matched set against the system part number. During commissioning the gap voltage is checked against the transducer calibration curve, and the reading is recorded in the machine history for later comparison.
The Proximitor is normally wired with the probe and extension cable as a matched set, and the system is tested with the Bently recommended test procedure before the machine is returned to service. The test jack voltage and the monitor reading are compared with the values recorded at commissioning, and any drift is investigated. The 3300 XL system is supported by the Bently Nevada documentation set covering installation, calibration and troubleshooting, and spares are ordered against the complete three-part system number. For machines with redundant channels, the Proximitor is replaced without disturbing the adjacent wiring. The recommended wiring practice is to keep the extension cable clear of power cables and to earth the cable shield at the panel end. Channel readings are trended in the monitoring software, and the Proximitor is replaced when the commissioning baseline can no longer be matched.
Key Features
- 3300 XL Proximitor signal conditioner for 8 mm transducers
- 5.0 m system length configuration, panel mount
- 200 mV/mil (7.87 V/mm) linear output
- Test jack for verification without disturbing field wiring
- Powered from monitor or -24 Vdc supply
- Supplied as verified Bently Nevada spare
Applications
The 3300 XL system with the 330180-50-05 Proximitor is used on centrifugal and reciprocating compressors, steam and gas turbines, pumps and large motors where radial vibration and axial position are monitored for protection and diagnostics. It suits new machinery packages and retrofit applications in oil and gas, refining, power generation and petrochemical plants.
Specifications
| Part number | 330180-50-05 |
| Family | Bently Nevada 3300 XL Proximitor Sensor |
| System | 3300 XL 8 mm eddy-current proximity transducer |
| System length | 5.0 m (50) |
| Mounting | panel mount |
| Sensitivity | 200 mV/mil (7.87 V/mm) |
| Power supply | -24 Vdc |
| Output | gap-proportional DC voltage |
| Probe family | 3300 XL 8 mm |
Why Seven Star LLC
Seven Star LLC supplies verified Bently Nevada 3300 XL transducer components, including the 330180-50-05 Proximitor, to rotating equipment maintenance and reliability programmes across Oman and the GCC. Every item is checked against the complete Bently part number before your order is confirmed, and our team verifies the system length and mounting configuration for your installed transducer set.
Technical Specifications
The Bently Nevada 330180-50-05 is a Proximitor sensor from the 3300 XL Proximity Transducer System, used with 3300 XL 5mm or 8mm probes and extension cables. This configuration specifies a 5.0m system length with an agency approval package covering CSA, ATEX, and IECEx hazardous-area certification. The Proximitor provides a linear measurement range of 0.25–2.3mm (10–90 mils), with output of approximately -1 to -17V DC and a scale factor of 7.87V/mm (200mV/mil) ±5% at this system length, and an output resistance of 50Ω.
The Proximitor housing is A380 aluminum, the mating probe case is AISI 303/304 stainless steel with a PPS probe tip, and connectors are gold-plated brass or beryllium copper for reliable long-term signal integrity. Operating temperature for the Proximitor is -52°C to +100°C (storage to -52°C to +105°C). Extension cables for this system are available from 3.0 to 8.5m in standard or armored construction, terminated with gold-plated ClickLoc finger-tight connectors.
Certifications and Applications
This Proximitor carries cNRTLus Class I Zone 0/2 (intrinsically safe/non-incendive) certification and ATEX/IECEx II 1 G and II 3 G approval, suitable for the most demanding hazardous-area classifications. It is used for radial vibration and axial position measurement, plus Keyphasor speed/phase reference signals, on fluid-film bearing turbomachinery including turbines, compressors, and generators — forming the signal-conditioning link between the field-mounted proximity probe and the monitoring rack that performs alarm and trip logic.
Why Seven Star LLC
Seven Star LLC supplies genuine Bently Nevada (Baker Hughes) 3300 XL Proximitor sensors to power generation, oil & gas, and petrochemical customers across Oman and the wider GCC, and confirms the exact system length, agency-approval suffix, and probe compatibility required before confirming an order.
Request a Quote for Bently Nevada 3300 XL Proximitor 330180-50-05
Submit a formal inquiry through our RFQ page with the Proximitor part number 330180-50-05, your probe and extension cable part numbers and the monitor model. We will confirm the matching system configuration and respond with a formal quotation. | Inquiry Form
Related Products
Bently Nevada, a division of Baker Hughes, is a global leader in asset condition monitoring and protection technologies. For over six decades, the company has set the industry standard in machinery diagnostics, vibration analysis, and predictive maintenance solutions.
Its advanced systems and sensors are designed to ensure maximum equipment uptime, safety, and efficiency across power generation, oil & gas, and industrial manufacturing sectors. From vibration probes and monitoring racks to software platforms like System 1, Bently Nevada products enable real-time insight and data-driven decision-making.
Seven Star LLC supplies genuine Bently Nevada equipment, sensors, and monitoring solutions to clients across the Middle East, providing trusted reliability, expert support, and seamless integration for modern industrial operations.
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