Introduction
The Bently Nevada 330180-91-KZ is a 3300 XL 8 mm Proximitor Sensor intended for use in non-contact rotating-machinery measurement systems. When paired with a compatible 3300 XL 8 mm proximity probe and extension cable, it forms a complete eddy-current proximity transducer system capable of measuring both shaft position and dynamic shaft vibration.
The 3300 XL 8 mm platform is designed for demanding machinery-monitoring applications where direct shaft-motion information is important. Typical equipment includes steam and gas turbines, compressors, pumps, motors, generators, and other fluid-film-bearing machines. The same measurement principle can also support Keyphasor reference and speed measurements when the overall system is configured appropriately.
The -91 mounting configuration is designed for DIN-rail installation, making this Proximitor Sensor particularly convenient for compact instrumentation cabinets and retrofit projects. The 3300 XL architecture also provides practical interchangeability across compatible probes, extension cables, and Proximitor Sensors when the complete system is correctly matched.
Technical Specifications
The 330180-91-KZ should be evaluated as part of the complete proximity transducer system. Actual measurement performance depends on the selected probe, extension cable, target material, power supply, gap setting, and overall system configuration.
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 330180-91-KZ |
| Product Family | 3300 XL 8 mm Proximity Transducer System |
| Product Type | Proximitor Sensor |
| Mounting Configuration | DIN-rail |
| Measurement Technology | Eddy-current, non-contact proximity measurement |
| Compatible Probe Family | 3300-series 5 mm, 3300 8 mm and 3300 XL 8 mm probes, subject to system configuration |
| Primary Measurements | Shaft vibration and shaft position |
| Additional Measurement Use | Keyphasor reference and speed measurement when appropriately configured |
| Linear Range | 0.2 to 1.5 mm (8 to 60 mils) |
| Typical Power Supply | -17.5 to -26 Vdc without barriers |
| Maximum Power Consumption | Approximately 12 mA |
| Nominal Output Resistance | 50 Ω |
| Standard System Lengths | 5 m or 9 m; 1 m probe-only configuration also available within the system family |
| Proximitor Sensor Material | A308 aluminum |
| Typical Proximitor Sensor Weight | 246 g (8.67 oz) |
| Typical Complete System Weight | Approximately 0.7 kg (1.5 lb) |
| DIN-Rail Mounting Dimension | Approximately 89.4 mm (3.52 in) housing height |
| Minimum DIN-Rail Removal Clearance | Approximately 3.05 mm (0.12 in) additional clearance |
| Typical Target Material | AISI 4140 steel |
| Recommended Standard Gap | 1.27 mm (50 mils) under specified test conditions |
Applications
Turbine Shaft Monitoring
The 330180-91-KZ can be integrated into turbine monitoring systems where continuous measurement of shaft vibration or position is required. Non-contact sensing is especially valuable for high-speed rotors where conventional contact sensors are unsuitable.
Compressor Condition Monitoring
In large centrifugal and process compressors, shaft vibration data can help maintenance teams identify changes associated with imbalance, misalignment, bearing conditions, or other mechanical behavior.
Pumps and Motors
For continuously operating pumps and motors, proximity measurements provide a direct view of shaft movement. This information can complement conventional casing-vibration and process measurements.
Generator Monitoring
Large generators and rotating electrical equipment can benefit from shaft-position and vibration monitoring, particularly when the machine is considered critical to plant availability.
Gearboxes and Coupled Machinery
Shaft-motion measurements can provide useful diagnostic information on mechanically coupled equipment where changes in rotor behavior may accompany developing mechanical problems.
Machinery Protection Systems
When connected to appropriate monitoring and protection equipment, the 3300 XL proximity system can provide the measurement signal needed for alarm, shutdown, trending, and machinery-condition assessment.
Advantages
Compact DIN-Rail Installation
The 330180-91-KZ uses the DIN-rail-oriented packaging of the 3300 XL Proximitor Sensor family. This makes it a strong option for high-density instrumentation cabinets where efficient use of panel space is a priority.
Direct Non-Contact Shaft Measurement
The eddy-current principle measures the distance between the probe and conductive shaft surface without physical contact. This provides a practical way to observe dynamic shaft movement on continuously rotating machinery.
3300 XL System Compatibility
The 3300 XL 8 mm system is designed around matched probes, extension cables, and Proximitor Sensors, allowing components to be configured as a complete measurement chain. Compatible 3300 and 3300 XL components can also offer backward interchangeability under the applicable system conditions.
Useful 8 mm Measurement Platform
The 8 mm probe system offers a 1.5 mm linear measurement range and is intended for demanding industrial rotating-equipment applications. This makes it a versatile choice for shaft vibration and position monitoring.
Suitable for Retrofit Projects
For plants already using the 3300 or 3300 XL proximity platform, a correctly matched Proximitor Sensor can provide a practical replacement path while retaining the established monitoring architecture.
Industrial-Grade Construction
The Proximitor Sensor uses an aluminum housing and is designed for integration into industrial machinery-monitoring installations. Its compact construction and established connector system make it suitable for professional instrumentation environments.
Convenient Maintenance
A modular probe, extension-cable, and Proximitor Sensor arrangement allows individual components to be inspected or replaced without necessarily redesigning the complete monitoring installation.
Technical FAQs
1. What is the Bently Nevada 330180-91-KZ?
The 330180-91-KZ is a 3300 XL 8 mm Proximitor Sensor used with compatible proximity probes and extension cables for non-contact measurement of rotating-machine shaft position and vibration.
2. Is the 330180-91-KZ itself an 8 mm proximity probe?
No. It is the Proximitor Sensor. The 8 mm proximity probe is a separate component installed near the monitored shaft. A complete system combines the probe, extension cable, and Proximitor Sensor.
3. What type of mounting does the 330180-91-KZ use?
The -91 configuration uses DIN-rail mounting, making it suitable for instrumentation cabinets where compact and organized installation is required.
4. What can the 3300 XL 8 mm system measure?
The system can measure both static shaft position and dynamic shaft vibration. It can also be used for Keyphasor reference and speed measurement when the complete installation is properly configured.
5. What is the linear range of the 3300 XL 8 mm system?
The specified linear range is 0.2 to 1.5 mm (8 to 60 mils) under the applicable test conditions.
6. What is the weight of the Proximitor Sensor?
The published typical weight of the Proximitor Sensor is 246 g (8.67 oz). The complete transducer system weighs approximately 0.7 kg depending on the probe and extension-cable configuration.
7. What are the dimensions of the 330180-91-KZ?
The DIN-mount Proximitor Sensor housing is approximately 89.4 mm (3.52 in) in height in the published mounting arrangement. Additional clearance is required for DIN-rail removal and connector access.
8. What power supply does the 3300 XL Proximitor Sensor require?
The published electrical specification calls for approximately -17.5 to -26 Vdc without barriers, with maximum consumption around 12 mA. Operation outside the recommended voltage range can affect system performance.
9. Can the 330180-91-KZ be used with existing 3300-series components?
Compatible 3300 XL components are designed for electrical and physical interchangeability with certain non-XL 3300 5 mm and 8 mm components. However, mixing XL and non-XL components can limit the overall system performance to the applicable non-XL specifications, so the complete transducer chain should be checked before replacement.
10. What should be verified before ordering a replacement 330180-91-KZ?
Confirm the existing Proximitor Sensor part number, mounting style, probe type, extension-cable length, system length, power arrangement, target material, hazardous-area requirements, and monitoring-system interface. Matching the complete configuration is the best way to ensure reliable replacement performance.
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