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- 330903-00-04-05-02-CN
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Industrial Proximity Probe System – Model 330903-00-04-05-02-CN
Brand
The model 330903-00-04-05-02-CN belongs to the industrial machinery condition monitoring and protection product family of Bently Nevada.
This product line is widely used in power generation, oil and gas, petrochemical refining, marine propulsion, mining, metallurgy, cement production, paper manufacturing, and other heavy industrial sectors. It is designed to support continuous condition monitoring of rotating machinery, improve operational reliability, reduce maintenance costs, and enable predictive maintenance for critical equipment.
Product Series
The 330903-00-04-05-02-CN is part of the 3300 XL 8 mm Proximity Probe Series.
This series is a non-contact displacement measurement solution based on eddy current sensing technology. It is typically used as part of a complete system including a probe, extension cable, and signal conditioning module.
Key characteristics of the series include:
- High measurement accuracy and repeatability
- Excellent long-term stability
- Strong resistance to industrial vibration and interference
- High temperature tolerance
- Excellent linear response behavior
- Fast dynamic response capability
- Compact installation design
- Reliable 24/7 continuous operation
The CN suffix generally indicates a specific regional or configuration variant while maintaining compatibility within the same platform architecture.
Product Introduction
The 330903-00-04-05-02-CN 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 measures the distance between its sensing tip and a conductive rotating shaft without physical contact. Any mechanical movement caused by imbalance, misalignment, bearing wear, rotor instability, thermal expansion, or mechanical looseness is converted into an electrical signal for real-time monitoring.
The non-contact design eliminates mechanical wear, ensuring long-term measurement stability and reliability.
The probe is constructed with stainless steel housing and industrial-grade shielding, making it suitable for harsh environments with vibration, oil mist, dust, and high temperatures.
Its compact design allows installation in tight mechanical spaces such as bearing housings and machine casings.
Working Principle
The probe operates using the eddy current principle.
A high-frequency electromagnetic field is generated at the probe tip.
When a conductive metal surface (shaft) enters the field, eddy currents are induced on the surface.
These eddy currents change the impedance of the probe system.
The signal conditioning module converts these impedance variations into a proportional analog voltage signal representing shaft displacement.
This allows accurate, stable, and continuous monitoring without physical contact.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 330903-00-04-05-02-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 330903-00-04-05-02-CN is widely used in industrial rotating machinery monitoring systems.
Typical applications include:
- Steam turbine systems
- Gas turbine generator units
- Hydroelectric power 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 critical rotating equipment requiring high reliability.
Product Advantages
The 330903-00-04-05-02-CN provides multiple advantages in industrial applications:
- 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
- Durable stainless steel construction
- Strong resistance to oil, dust, moisture, and vibration
- Excellent electromagnetic interference immunity
- Reliable 24/7 continuous operation
- Compact design suitable for tight installation spaces
- Low maintenance requirements
- Long service life
- Supports predictive maintenance systems
- Improves machinery reliability
- Reduces unexpected downtime
- Enhances operational safety and efficiency
Recommended Models from the Same Series
| Model | Description | Probe Diameter | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330901-00-04-05-02-CN | Standard Proximity Probe | 8 mm | Ø8 × 50 mm | 0.11 |
| 330902-00-04-05-02-CN | High Stability Probe | 8 mm | Ø8 × 50 mm | 0.12 |
| 330904-00-04-05-02-CN | Extended Configuration Probe | 8 mm | Ø8 × 55 mm | 0.14 |
| 330905-00-04-05-02-CN | Heavy-Duty Industrial Probe | 8 mm | Ø8 × 65 mm | 0.15 |
| 330906-00-04-05-02-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 Monitor 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 330903-00-04-05-02-CN is a precision non-contact eddy current proximity probe designed for continuous shaft displacement and vibration monitoring in industrial rotating machinery.
As part of the 3300 XL 8 mm Proximity Probe Series, it provides stable performance, high accuracy, strong environmental resistance, and long operational life. It is widely applied in turbines, compressors, pumps, motors, generators, and other critical rotating equipment operating in demanding industrial environments.
Its compact structure, durable stainless steel housing, and reliable signal output make it suitable for predictive maintenance, machinery protection, and continuous condition monitoring applications.