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- 330903-00-05-50-02-RU
- 3300 XL NSv Proximity Probe
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Industrial Proximity Probe System – Model 330903-00-05-50-02-RU
Brand
The model 330903-00-05-50-02-RU belongs to the industrial machinery monitoring and protection product family of Bently Nevada.
This product line is widely applied in power generation, oil and gas, petrochemical refining, marine propulsion systems, mining, metallurgy, cement production, and other heavy industrial sectors. It is designed to support continuous monitoring of rotating machinery condition, improve operational reliability, and enable predictive maintenance for critical assets.
Product Series
The 330903-00-05-50-02-RU is part of the 3300 XL 8 mm Proximity Probe Series.
This series is a non-contact eddy current displacement measurement system used for monitoring shaft vibration, position, and movement in rotating machinery. It typically consists of:
- Proximity probe
- Extension cable
- Signal conditioning module
Key features include:
- High precision measurement capability
- Long-term signal stability
- Strong vibration resistance
- High temperature tolerance
- Excellent linear response
- Fast dynamic response
- Compact installation design
- Continuous real-time monitoring capability
- Strong industrial compatibility
The RU suffix typically indicates a regional or configuration-specific variant while maintaining core compatibility within the same system architecture.
Product Introduction
The 330903-00-05-50-02-RU is a precision non-contact eddy current proximity probe designed for continuous monitoring of shaft vibration, shaft position, radial displacement, and axial movement in rotating machinery.
The probe operates without physical contact with the shaft, ensuring accurate measurement while eliminating mechanical wear. It continuously detects shaft behavior changes caused by imbalance, misalignment, bearing wear, rotor instability, thermal expansion, or mechanical looseness, converting these mechanical variations into electrical signals.
It is designed for harsh industrial environments including high temperature zones, oil mist exposure, dusty conditions, and strong vibration environments.
Its compact form factor allows installation in tight mechanical spaces such as bearing housings and rotor support structures.
Working Principle
The probe operates using eddy current sensing technology.
A high-frequency electromagnetic field is generated at the probe tip.
When a conductive shaft enters the field, eddy currents are induced on the shaft surface.
These eddy currents alter the impedance of the probe system.
The signal conditioning module converts these impedance changes into a proportional analog voltage signal representing shaft displacement.
This non-contact measurement principle ensures long-term stability, accuracy, and reliability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 330903-00-05-50-02-RU |
| Product Type | Non-contact Proximity Probe |
| Measurement Principle | Eddy Current Technology |
| Series | 3300 XL 8 mm Proximity Probe Series |
| Probe Diameter | 8 mm |
| Measurement Function | Shaft Vibration, Shaft Position, Radial & Axial Displacement |
| Output Signal | Analog Voltage |
| Linear Measurement Range | Approximately 2–4 mm |
| Sensitivity | ~7.87 V/mm (system dependent) |
| Frequency Response | Suitable for high-speed rotating machinery |
| Housing Material | Stainless Steel |
| Cable Type | Shielded High-Temperature Coaxial Cable |
| Connector Type | Industrial Standard Connector |
| Installation Method | Threaded Mounting |
| Operating Temperature | -35°C to +177°C |
| Environmental Resistance | Oil, Dust, Moisture, Vibration Resistant |
| EMI/RFI Protection | High Immunity |
| Dimensions | Approximately Ø8 mm × 50 mm |
| Weight | Approximately 0.12 kg |
Product Applications
The 330903-00-05-50-02-RU is widely used in rotating machinery condition monitoring systems.
Typical applications include:
- Steam turbine generator systems
- Gas turbine power units
- Hydroelectric turbine systems
- Centrifugal compressors
- Axial compressors
- Industrial gas compressors
- High-speed electric motors
- Industrial pump systems
- Boiler feed pumps
- Cooling water pumps
- Marine propulsion systems
- Metallurgical rolling mills
- Mining machinery systems
- Cement production equipment
- Petrochemical processing plants
- Chemical production facilities
- Natural gas compressor stations
- Industrial blower systems
- Large ventilation fans
- Heavy rotating machinery systems
It is especially suitable for continuous monitoring of mission-critical rotating equipment.
Product Advantages
The 330903-00-05-50-02-RU provides multiple operational advantages:
- Non-contact measurement eliminates mechanical wear
- High precision displacement detection
- Stable long-term performance
- Fast response to dynamic shaft movement
- High sensitivity to micro-vibration signals
- Durable stainless steel construction
- Strong resistance to harsh industrial environments
- Excellent electromagnetic interference immunity
- Continuous 24/7 operational capability
- Compact design for confined installation areas
- Low maintenance requirements
- Long service life
- Supports predictive maintenance strategies
- Improves equipment reliability
- Reduces unexpected downtime
- Enhances operational efficiency and safety
Recommended Models from the Same Series
| Model | Description | Probe Diameter | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330901-00-05-50-02-RU | Standard Proximity Probe | 8 mm | Ø8 × 50 mm | 0.11 |
| 330902-00-05-50-02-RU | High Stability Probe | 8 mm | Ø8 × 50 mm | 0.12 |
| 330904-00-05-50-02-RU | Extended Configuration Probe | 8 mm | Ø8 × 55 mm | 0.14 |
| 330905-00-05-50-02-RU | Heavy-Duty Industrial Probe | 8 mm | Ø8 × 65 mm | 0.15 |
| 330906-00-05-50-02-RU | Compact Installation Probe | 8 mm | Ø8 × 45 mm | 0.10 |
Recommended Popular Models from the Same Brand
| Model | Product Type | Function | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| 3500/42M | Vibration Monitoring Module | Shaft Vibration Monitoring | 170 × 110 × 45 | 0.50 |
| 3500/40M | Proximitor Monitor Module | Shaft Displacement Monitoring | 160 × 100 × 40 | 0.45 |
| 3500/22M | Rack Interface Module | System Communication Interface | 150 × 100 × 35 | 0.40 |
| 3500/92 | Communication Gateway Module | Industrial Network Communication | 180 × 120 × 50 | 0.60 |
| 3500/15 | Power Supply Module | System Power Distribution | 200 × 130 × 60 | 0.75 |
Summary
The 330903-00-05-50-02-RU is a precision non-contact eddy current proximity probe designed for continuous monitoring of shaft vibration, displacement, and position in rotating machinery.
As part of the 3300 XL 8 mm Proximity Probe Series, it delivers stable measurement performance, high accuracy, strong environmental resistance, and long operational life. It is widely used in turbines, compressors, pumps, motors, generators, and other critical rotating equipment operating in demanding industrial environments.
Its compact structure and reliable output make it suitable for predictive maintenance, machinery protection, and continuous condition monitoring applications.