Bently Nevada 3300 XL Proximitor 330180-51-CN
Overview
The Bently Nevada 330180-51-CN is a 3300 XL Proximitor Sensor with a 5.0 m system configuration and DIN rail mounting, used with 3300 XL 8 mm eddy-current proximity probes for radial vibration and axial position measurement on rotating machinery. The Proximitor converts the probe gap into a linear DC voltage for the monitor input, and the DIN rail option simplifies installation inside standard control cabinets. The part number identifies the 5.0 m system length (51) together with the DIN mounting variant (CN) of the 330180 family.
The 3300 XL family is the established standard for eddy-current vibration transducers, specified on most new turbomachinery and supported by a large installed base. The DIN mounted 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
Inside the Proximitor, a tuned oscillator drives the probe tip; as the measured target moves towards the tip, eddy current losses change and the oscillator signal is converted to a gap-proportional DC output. The 3300 XL 8 mm system provides 200 mV/mil (7.87 V/mm), producing a stable signal for protection and diagnostic monitors. The module operates from the monitor supply or a dedicated -24 Vdc source and includes a test jack for checking the transducer loop from the terminal strip.
DIN rail mounting lets the installer clip the Proximitor onto a standard 35 mm rail inside the cabinet, reducing panel layout effort and making future replacement simple. The extension cable from the probe junction box is terminated at the Proximitor terminals, and the output is wired to the monitor channel. During commissioning the gap voltage is compared with the calibration curve for the probe system and recorded as the baseline reading.
DIN rail mounting lets the installer clip the Proximitor onto a standard 35 mm rail inside the cabinet, reducing panel layout effort and making future replacement simple. The extension cable from the probe junction box is terminated at the Proximitor terminals, and the output is wired to the monitor channel. During commissioning the gap voltage is compared with the calibration curve for the probe system and recorded as the baseline reading. 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. 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. The 3300 XL Proximitor range is covered by the Bently Nevada documentation and is serviced as a standard spare in the reliability programme.
Key Features
- 3300 XL Proximitor signal conditioner for 8 mm transducers
- 5.0 m system length configuration
- DIN rail mounting for standard 35 mm rail
- 200 mV/mil (7.87 V/mm) linear output
- Test jack for loop verification
- Supplied as verified Bently Nevada spare
Applications
The 330180-51-CN is used with 3300 XL probes on compressors, turbines, pumps and large electric motors in oil and gas, refining, power and petrochemical plants. DIN rail mounting suits retrofit projects where the cabinet layout must be updated without drilling new panel holes.
Specifications
| Part number | 330180-51-CN |
| Family | Bently Nevada 3300 XL Proximitor Sensor |
| System | 3300 XL 8 mm eddy-current proximity transducer |
| System length | 5.0 m (51) |
| Mounting | DIN rail |
| 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 Proximitors and transducer components to maintenance and reliability teams across Oman and the GCC. Every part number is checked before your order is confirmed, and our team helps you match the system length and mounting option to your existing 3300 XL probe set.
Technical Specifications
The Bently Nevada 330180 series is the Proximitor signal-conditioning sensor used within the 3300 XL Proximity Transducer System, pairing with 8mm probes and extension cables to output a signal proportional to shaft gap or vibration. The “51” segment of this part number indicates a 5.0m system length with DIN-rail mounting, consistent with Baker Hughes’ documented ordering scheme for the 330180 Proximitor. The specific “-CN” suffix on this order does not appear in the official ordering tables reviewed for this platform; it is most likely a China/CCC-market or distributor-specific designation, so Seven Star LLC confirms this detail directly with the customer’s existing system rather than assuming a specific meaning.
Based on the documented 3300 XL Proximitor family specifications, the unit operates from a -17.5 to -26V DC supply with an output impedance of 50Ω, providing a linear range of 2mm (80 mils) with a scale factor of 7.87V/mm (200mV/mil) ±5% and a frequency response of 0–10kHz (+0/-3dB). Operating temperature is -52°C to +100°C, and the platform carries SIL 2 (HFT=0) and SIL 3 (HFT=1) functional-safety capability.
Standards and Applications
The 3300 XL platform is built to API 670, the petroleum and chemical industry’s own machinery-protection transducer specification, and additionally carries ATEX/IECEx (II 1 G / II 3 G), cNRTLus Class I Zone 0/Division 2, RoHS, and EMC Directive 2014/30/EU compliance. It is used for radial vibration and position monitoring, plus Keyphasor speed/phase reference, on fluid-film bearing turbomachinery such as turbines, compressors, and generators.
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 independently verifies every ordering-code detail — including suffixes not found in the standard documentation — against the customer’s existing installation before confirming a quotation.
Request a Quote for Bently Nevada 3300 XL Proximitor 330180-51-CN
Submit a formal inquiry through our RFQ page with the Proximitor part number 330180-51-CN, your probe and extension part numbers and the monitor model. We will confirm the matching 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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