



Introduction
The Bently Nevada 330180-52-CN is a 3300 XL 8mm Proximitor Sensor designed to operate as the signal-conditioning element of a complete 3300 XL 8mm proximity transducer system. It works with a compatible proximity probe and extension cable to convert the probe's eddy-current response into an electrical signal representing shaft position and dynamic movement.
The 52 configuration specifies a 5.0-meter system length with no mounting hardware, while the CN suffix identifies the country-specific agency approval option. This makes the model particularly attractive for installations where the customer provides the mounting arrangement and where the project requires the applicable CN approval configuration.
The 3300 XL 8mm platform is widely suited to vibration and position measurement on fluid-film bearing machinery, as well as Keyphasor reference and speed-measurement applications.
Technical Specifications
The 330180 ordering structure is straightforward: 330180-52-CN identifies a 5.0 m system-length Proximitor with no factory mounting hardware and the CN agency-approval option.
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model | 330180-52-CN |
| Product Type | 3300 XL 8mm Proximitor Sensor |
| Series | 3300 XL |
| System Length | 5.0 m (16.4 ft) |
| Mounting Configuration | No mounting hardware |
| Agency Approval | CN — country-specific approval |
| Sensor Input | One compatible non-contacting 3300-series 5mm, 8mm, or 3300 XL 8mm probe and extension cable |
| Sensor Housing Material | A308 aluminum |
| Operating Temperature | -51°C to +100°C (-60°F to +212°F) |
| Storage Temperature | -51°C to +105°C (-60°F to +221°F) |
| Typical Sensor Dimensions | 81.3 × 61.2 × 63.5 mm |
| Typical Sensor Weight | 246 g (0.246 kg) |
| Typical Complete System Weight | Approximately 0.7 kg |
| System Architecture | Probe + extension cable + Proximitor Sensor |
Applications
Turbine Vibration and Position Monitoring
The 330180-52-CN can serve as the signal-conditioning component in compatible turbine monitoring systems. When paired with the correct probe and extension cable, it provides measurements of shaft position and dynamic rotor movement.
Compressor Monitoring
Compressors require reliable monitoring of rotor behavior, particularly in fluid-film bearing arrangements. The 3300 XL 8mm system provides a proven non-contact measurement architecture for compatible compressor applications.
Generator Monitoring
Large generators can use proximity transducers to monitor shaft displacement and vibration. The no-mounting-hardware configuration gives maintenance teams flexibility when integrating the Proximitor into an existing cabinet or mounting arrangement.
Motor Applications
Suitable industrial motors can incorporate the 3300 XL 8mm system for continuous shaft monitoring. The Proximitor provides the interface between the sensing probe and downstream monitoring equipment.
Fluid-Film Bearing Machines
Fluid-film bearing applications are a core use case for the 3300 XL 8mm system. Shaft position and vibration data can be used to evaluate rotor behavior and support machinery protection strategies.
Keyphasor and Speed Measurement
With an appropriate probe arrangement, the system can also support Keyphasor reference and rotational-speed measurements, making the Proximitor useful beyond conventional vibration monitoring.
Machinery Protection
When integrated with compatible monitoring equipment, the Proximitor provides the conditioned signal required by a machinery protection system.
Retrofit Projects
The no mounting hardware configuration is particularly convenient for retrofit work where the original installation already has suitable mounting provisions. It allows the customer to retain an existing mounting solution or use an application-specific bracket.
International Industrial Installations
The CN approval option makes this configuration suitable for projects where the applicable country-specific approval requirements need to be reflected in the ordering code.
Advantages
5.0 m System Length
The 5.0 m configuration is a versatile choice for rotating-machinery installations. It provides sufficient total system length for many standard probe and extension-cable arrangements.
No Factory Mounting Hardware
The 52 option deliberately omits mounting hardware. This gives users more freedom when the Proximitor must be installed in a customized cabinet, bracket, or existing monitoring panel.
CN Approval Configuration
The CN suffix identifies the country-specific approval option, providing a clear distinction from standard -00 and other approval configurations.
Broad Probe Compatibility
The Proximitor input accepts one compatible non-contacting 3300-series 5mm, 3300 8mm, or 3300 XL 8mm proximity probe and extension cable. This provides useful flexibility when configuring or maintaining an existing transducer system.
Compact Aluminum Housing
The A308 aluminum housing provides a lightweight and durable enclosure for the Proximitor electronics.
Wide Temperature Range
The published operating range of -51°C to +100°C allows the sensor to be deployed across demanding industrial environments, while the storage range extends to -51°C to +105°C.
Complete System Compatibility
The Proximitor is designed as part of a complete 3300 XL 8mm transducer system rather than as a standalone sensing device. This architecture allows the probe, extension cable, and Proximitor to be selected as a coordinated measurement chain.
Flexible Replacement Option
For systems originally configured with a 5.0 m Proximitor and country-specific approval requirements, the 330180-52-CN provides a direct configuration target without adding unnecessary mounting hardware.
Technical FAQs
1. What is the Bently Nevada 330180-52-CN?
It is a 3300 XL 8mm Proximitor Sensor configured for a 5.0 m system length, without mounting hardware, and with the CN country-specific approval option.
2. What does “52” mean in the part number?
The 52 identifies a 5.0 m (16.4 ft) system length with no mounting hardware.
3. What does “CN” mean?
The CN suffix identifies a country-specific agency approval option.
4. Is the 330180-52-CN itself a proximity probe?
No. It is the Proximitor Sensor. A complete system requires a compatible proximity probe and extension cable.
5. Which probes can be connected to this Proximitor?
The sensor input accepts one compatible 3300-series 5mm, 3300 8mm, or 3300 XL 8mm proximity probe and extension cable.
6. What is the total system length?
The configured system length is 5.0 meters (16.4 feet). The probe and extension-cable lengths should be selected so that their combined length matches the Proximitor's specified system length.
7. Does this model include mounting hardware?
No. The 52 configuration is specifically the no-mounting-hardware version.
8. What are the approximate dimensions?
The Proximitor housing is approximately 81.3 mm × 61.2 mm × 63.5 mm.
9. How much does the Proximitor weigh?
The sensor weighs approximately 246 g (0.246 kg). Complete-system or shipping weights are higher because they include the probe, cable, and/or packaging.
10. What is the difference between 330180-50-CN, 330180-51-CN, and 330180-52-CN?
The three models share the 5.0 m system length and CN approval configuration but differ in mounting:
| Model | System Length | Mounting |
|---|
| 330180-50-CN | 5.0 m | Panel mount |
| 330180-51-CN | 5.0 m | DIN mount |
| 330180-52-CN | 5.0 m | No mounting hardware |