Introduction
The Bently Nevada 330180-X0-CN is a 3300 XL Proximitor Sensor designed for use within an eddy-current proximity transducer system. It works together with a compatible 3300 or 3300 XL proximity probe and extension cable to convert changes in the distance between the probe tip and a conductive shaft surface into a proportional electrical signal.
The 3300 XL 8 mm system is intended for non-contact measurement of shaft position and dynamic vibration, with additional applications such as Keyphasor reference and speed measurement. It is particularly well suited to rotating machinery equipped with fluid-film bearings, including turbines, compressors, pumps, motors, and generators.
What makes the 330180-X0-CN configuration distinctive is its CN approval option. CN indicates country-specific approvals, so this version should be selected when the installation has specific local certification requirements rather than simply assuming that it is equivalent to the standard or -05 approval configuration.
The Proximitor itself is the signal-conditioning component of the system; it is not the physical 8 mm probe. This distinction is important when replacing an existing installation because the probe, extension cable, Proximitor, system length, and approval configuration all need to be compatible.
Technical Specifications
The 3300 XL 8 mm proximity system consists of a Proximitor Sensor, extension cable, and compatible 8 mm probe. The Proximitor accepts a non-contacting 3300-series 5 mm, 3300 8 mm, or 3300 XL 8 mm proximity probe and extension cable.
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 330180-X0-CN |
| Product Type | 3300 XL Proximitor Sensor |
| Product Family | 3300 XL 5/8 mm Proximity Transducer System |
| Configuration | X0 |
| System Length | 5 m configuration |
| Mounting | Panel Mount |
| Measurement Principle | Eddy-current, non-contact |
| Compatible Probe Input | 3300 5 mm, 3300 8 mm or 3300 XL 8 mm probe and extension cable |
| Primary Measurements | Shaft vibration and shaft position |
| Additional Applications | Keyphasor reference and speed measurement |
| Linear Range | 0.2–1.5 mm (8–60 mils) |
| Nominal Probe Gap | 1.27 mm (50 mils) |
| Nominal Scale Factor | 7.87 V/mm (200 mV/mil) |
| Standard Supply | -17.5 to -26 Vdc |
| Supply With Barriers | -23 to -26 Vdc |
| Maximum Current Consumption | 12 mA |
| Output Resistance | 50 Ω |
| Housing Material | A308 aluminum |
| Proximitor Weight | 246 g (8.67 oz) |
| Typical Complete System Weight | 0.7 kg (1.5 lb) |
| Approximate Mounting Dimension | 83.8 mm (3.30 in) |
| Approval Option | CN, country-specific approvals |
| Typical Installation | Industrial machinery-monitoring panel |
Applications
Steam and Gas Turbines
The 330180-X0-CN can be incorporated into turbine monitoring channels for direct observation of rotor vibration and shaft position. Its proximity-based measurement is useful during startup, shutdown, load changes, and steady-state operation.
Centrifugal Compressors
Compressor rotors can experience changes in dynamic behavior due to imbalance, misalignment, bearing conditions, and process changes. Direct shaft measurements provide valuable information for machinery condition monitoring.
Pumps and Motors
The Proximitor can be used with compatible proximity probes on industrial pumps and motors to supplement conventional casing-vibration measurements with direct shaft information.
Generators
Large rotating generators can benefit from shaft-position and vibration monitoring as part of a comprehensive machinery-protection system.
Fluid-Film Bearing Machines
The 3300 XL 8 mm system is especially suitable for fluid-film bearing machinery because the proximity probe measures rotor movement directly rather than depending solely on casing response.
Speed and Keyphasor Applications
With an appropriate probe arrangement and monitoring system, the proximity transducer can provide rotational reference or speed-related information. Bently Nevada specifically identifies Keyphasor and speed measurement among the system's applications.
Advantages
Country-Specific Approval Flexibility
The CN option is intended for country-specific approval requirements. This can be valuable for projects where local certification differs from the standard approval packages used for international installations.
5-Meter Panel-Mount Design
The X0 configuration is associated with a panel-mount arrangement, while the 5 m system configuration provides a practical solution for machinery installations where the Proximitor is positioned within the required distance of the probe.
Non-Contact Measurement
Eddy-current technology allows the associated probe to measure shaft movement without touching the rotating surface. This supports continuous monitoring of high-speed machinery without probe-to-shaft mechanical wear.
Direct Shaft Measurement
Unlike sensors that primarily observe casing movement, the proximity system provides direct information about rotor displacement. This makes it particularly useful for machines where shaft dynamics are critical.
Broad Probe Compatibility
The Proximitor input accepts compatible 3300-series 5 mm, 3300 8 mm, and 3300 XL 8 mm proximity probe and extension-cable combinations.
Proven 3300 XL Architecture
The probe, extension cable, and Proximitor arrangement provides a modular measurement system that is straightforward to integrate into established machinery-monitoring installations.
Compact Construction
The A308 aluminum Proximitor housing and approximately 246 g sensor weight make the unit well suited to conventional industrial instrumentation panels.
Retrofit Potential
3300 XL 8 mm components are designed to be electrically and physically interchangeable with applicable non-XL 3300-series 5 mm and 8 mm components when the installation requirements are satisfied. However, mixing XL and non-XL components limits overall performance to the applicable non-XL system specifications.
Suitable for Critical Machinery
The combination of direct rotor measurement, flexible probe compatibility, compact installation, and approval-specific configurations makes the 330180-X0-CN a strong candidate for demanding industrial machinery-monitoring applications.
Technical FAQs
1. What is the Bently Nevada 330180-X0-CN?
The 330180-X0-CN is a 3300 XL Proximitor Sensor used with a compatible proximity probe and extension cable for non-contact shaft vibration and position measurement.
2. Is the 330180-X0-CN the actual 8 mm proximity probe?
No. It is the Proximitor Sensor. The physical 8 mm probe is a separate component installed near the monitored shaft.
3. What does CN mean in the model number?
CN indicates a country-specific approval option. The exact approval requirements should be checked against the intended installation and applicable local regulations.
4. What does the X0 configuration indicate?
The X0 configuration corresponds to the panel-mount arrangement within the 3300 XL Proximitor Sensor ordering structure.
5. What system length is associated with this configuration?
The 3300 XL Proximitor family is available in 5 m and 9 m system configurations, with the X0-CN configuration associated with the 5 m panel-mount arrangement.
6. What power supply does the Proximitor require?
The standard system requires -17.5 to -26 Vdc, with maximum consumption of approximately 12 mA. When barriers are used, the specified range is -23 to -26 Vdc.
7. What is the linear measurement range?
The 3300 XL 8 mm system provides a nominal linear range of approximately 0.2–1.5 mm (8–60 mils) under the specified system conditions.
8. How much does the Proximitor Sensor weigh?
The Proximitor Sensor weighs approximately 246 g (8.67 oz). A complete probe, extension cable, and Proximitor system typically weighs approximately 0.7 kg (1.5 lb).
9. What are the approximate dimensions?
The relevant mounting dimension is approximately 83.8 mm (3.30 in). Additional space should be allowed around the unit for connectors, wiring, cable routing, and maintenance.
10. What should be checked before ordering a replacement?
Verify the 330180-X0-CN model, CN approval requirements, 5 m system configuration, panel mounting, compatible probe, extension cable, power supply, monitoring-system interface, and installation environment. For a critical machinery channel, matching the complete transducer system is preferable to selecting the Proximitor alone.
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