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- 330903-00-04-10-11-CN
- 3300 XL NSv Proximity Probe
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Industrial Proximity Probe System – Model 330903-00-04-10-11-CN
Brand
The model 330903-00-04-10-11-CN 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 environments. It is designed to provide continuous monitoring of rotating machinery condition, improve operational reliability, and support predictive maintenance strategies for critical assets.
Product Series
The 330903-00-04-10-11-CN is part of the 3300 XL 8 mm Proximity Probe Series.
This series is a non-contact displacement measurement system based on eddy current sensing technology. It is typically deployed as part of a complete system that includes:
- Proximity probe
- Extension cable
- Signal conditioning module
Key features of the series include:
- High measurement precision and repeatability
- Long-term signal stability
- Strong resistance to vibration and industrial interference
- High temperature tolerance
- Excellent linear response behavior
- Fast dynamic measurement response
- Compact installation design
- Reliable continuous monitoring capability
- Easy integration into protection systems
Product Introduction
The 330903-00-04-10-11-CN is a precision non-contact eddy current proximity probe used 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, enabling accurate measurement while eliminating mechanical wear. During operation, shaft movement caused by imbalance, misalignment, bearing wear, rotor instability, thermal expansion, or mechanical looseness is converted into electrical signals for analysis and monitoring.
The device is designed for harsh industrial environments, including exposure to oil mist, dust, moisture, vibration, and high temperatures.
Its compact structure allows installation in confined spaces such as bearing housings and machine internals.
Working Principle
The probe operates based on eddy current sensing technology.
A high-frequency electromagnetic field is generated at the probe tip.
When a conductive metal shaft enters the field, eddy currents are induced on the surface.
These eddy currents modify the impedance of the probe system.
The signal conditioning unit converts these impedance changes into a proportional analog voltage output representing shaft displacement.
This non-contact principle ensures high accuracy, long service life, and stable performance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 330903-00-04-10-11-CN |
| 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 330903-00-04-10-11-CN is widely used in rotating machinery condition monitoring systems across multiple industries.
Typical applications include:
- Steam turbine generator systems
- Gas turbine 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
It is especially suitable for continuous condition monitoring of mission-critical rotating equipment.
Product Advantages
The 330903-00-04-10-11-CN provides several key 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 operation capability
- Compact design for tight installation spaces
- Low maintenance requirements
- Long operational lifespan
- Supports predictive maintenance strategies
- Improves machinery reliability and safety
- Reduces unexpected downtime
- Enhances operational efficiency
Recommended Models from the Same Series
| Model | Description | Probe Diameter | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330901-00-04-10-11-CN | Standard Proximity Probe | 8 mm | Ø8 × 50 mm | 0.11 |
| 330902-00-04-10-11-CN | High Stability Probe | 8 mm | Ø8 × 50 mm | 0.12 |
| 330904-00-04-10-11-CN | Extended Configuration Probe | 8 mm | Ø8 × 55 mm | 0.14 |
| 330905-00-04-10-11-CN | Heavy-Duty Industrial Probe | 8 mm | Ø8 × 65 mm | 0.15 |
| 330906-00-04-10-11-CN | 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 330903-00-04-10-11-CN is a high-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 provides stable performance, high accuracy, strong environmental resistance, and long service life. It is widely used in turbines, compressors, pumps, motors, generators, and other critical rotating equipment operating under demanding industrial conditions.
Its compact structure and reliable signal output make it suitable for predictive maintenance, machinery protection, and continuous condition monitoring applications.