Description
1. Product Title
Bently Nevada 330108-91-05 – 3300 XL 8mm Proximitor Sensor
2. Product Overview
The330108-91-05 is a high-performance 3300 XL 8mm Proximitor Sensor developed by Bently Nevada (Baker Hughes). This sophisticated electronic signal conditioner is the core of the 3300 XL Proximity Transducer System. It generates a Radio Frequency (RF) signal that is sent to the proximity probe to detect the distance between the probe tip and the observed conductive target, such as a rotating machine shaft.
The330108-91-05 processes the returning eddy current signal and converts it into a highly linear DC voltage output. This solves the critical industrial need for accurate, non-contacting measurement of radial vibration, axial position (thrust), and speed. By utilizing advanced circuitry, this Proximitor ensures superior scale factor stability and resistance to radio frequency interference (RFI), providing reliable data even in the electrically noisy environments typical of power plants and refineries.
3. Technical Specifications
- Brand: Bently Nevada
- Model: 330108-91-05
- Warranty: One Year
- Condition: 100% New & Original
- Total System Length: 5.0 Meters
- Mounting Option: 35mm DIN rail mount
- Agency Approval: -91 (Multiple Approvals including ATEX, CSA, IECEx for hazardous areas)
- Output Scale Factor: 7.87 V/mm (200 mV/mil) nominal
- Power Supply: -17.5 VDC to -26 VDC
- Operating Temperature: -51°C to +100°C (-60°F to +212°F)
- Linear Range: 2.0 mm (80 mils)
- Interchangeability: Fully compatible with all 3300 XL 8mm Probes and Extension Cables
4. Key Features & Benefits
- Advanced RFI/EMI Immunity: The <span style=”color: blue;”>330108-91-05</span> is designed to minimize the impact of external electrical noise, ensuring that the vibration data transmitted to the monitoring system (like the Bently Nevada 3500) is clean and accurate.
- Hazardous Area Certification: With the -91 option, this module is certified for use in intrinsically safe and non-incendive environments, making it suitable for global deployment in explosive atmospheres.
- Field-Proven Reliability: As part of the 3300 XL series, it offers a significant improvement over previous generations in terms of temperature stability and interchangeability, reducing the need for field recalibration when replacing components.
5. Application Scenarios
- Refinery Turbo-Machinery: Providing continuous radial vibration monitoring for centrifugal compressors to detect early signs of bearing wear or shaft instability.
- Power Generation Turbines: Essential for axial position monitoring to prevent rotor-to-stator contact during thermal expansion or load changes.
- Large Industrial Motors: Monitoring shaft displacement and speed for high-horsepower motors in water treatment and mining facilities.
6. Frequently Asked Questions (FAQ)
- Q: What is the primary function of the 330108-91-05 ?
- A: It provides the excitation signal for a proximity probe and converts the return signal into a linear voltage used by machinery protection systems.
- Q: Is 330108-91-05 compatible with legacy systems?
- A: Yes, it is backward compatible with non-XL 3300 8mm probes and cables; however, the 5.0m system length must be strictly observed to maintain calibration accuracy.
