Advanced 25 mm Proximity Probe for Precision Machinery Monitoring
The Bently Nevada 330851-02-000-030-10-00-05 3300 XL 25 mm Proximity Probe is a high-precision non-contact eddy current sensor engineered for demanding machinery protection and condition monitoring applications. Designed as part of the 3300 XL 25 mm Proximity Transducer System, this probe provides accurate measurement of differential expansion, axial shaft position, and rotor displacement in large rotating equipment. The complete transducer system combines the probe, extension cable, and Proximitor Sensor to deliver exceptional measurement stability, excellent linearity, and dependable long-term performance for critical industrial assets.
The 330851-02-000-030-10-00-05 configuration features an M30 × 2 threaded probe body, 30 mm overall case length, 1.0 m integral cable, non-armored construction, and multiple agency approvals. Its compact design allows installation where mounting space is limited while maintaining the high measurement accuracy required for turbine supervisory instrumentation (TSI), compressors, generators, and other mission-critical rotating machinery.
Product Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330851-02-000-030-10-00-05 |
| Product Type | 3300 XL 25 mm Proximity Probe |
| Series | 3300 XL 25 mm Proximity Transducer System |
| Measurement Principle | Non-contact Eddy Current |
| Probe Case Type | M30 × 2 Metric Thread |
| Unthreaded Length | 0 mm |
| Overall Case Length | 30 mm |
| Integral Cable Length | 1.0 m (3.3 ft) |
| Armor Option | No Armor |
| Agency Approval | Multiple Approvals |
| Probe Body Material | AISI 304 Stainless Steel |
| Probe Tip Material | High-Performance PEEK |
| System Output | 20 mV/mil (0.787 V/mm) |
| Linear Measurement Range | 12.7 mm (500 mils) |
| Maximum Continuous Operating Temperature | Up to 200°C |
| Compatible Components | 3300 XL 25 mm Extension Cable & 3300 XL 25 mm Proximitor Sensor |
| Primary Measurements | Differential Expansion, Shaft Position, Rotor Displacement |
| Dimensions | M30 × 2 Thread × 30 mm Overall Case Length |
| Weight | Approximately 0.23 kg |
Typical Applications
Designed for continuous online machinery protection, the 330851-02-000-030-10-00-05 delivers dependable performance across a wide variety of industrial applications.
Typical applications include:
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Steam turbine supervisory instrumentation (TSI)
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Differential expansion monitoring
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Axial shaft position measurement
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Rotor displacement monitoring
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Steam turbine generators
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Industrial gas turbines
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Centrifugal compressors
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Turbo-expanders
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Power generation plants
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Petrochemical facilities
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Oil & gas processing equipment
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Refinery rotating machinery
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Heavy industrial drive systems
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OEM machinery protection packages
Its compact probe body and high-temperature capability make it particularly suitable for installations requiring reliable displacement monitoring under demanding operating conditions.
Performance Advantages
The 330851-02-000-030-10-00-05 is designed to maximize machinery reliability while minimizing maintenance requirements.
Key benefits
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High-accuracy non-contact eddy current sensing
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Compact 30 mm probe body for flexible installation
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Wide 12.7 mm (500 mil) linear measurement range
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Excellent long-term stability and repeatability
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Durable stainless-steel construction
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High-temperature probe design for harsh environments
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Multiple agency approvals for global industrial applications
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Fully compatible with Bently Nevada 3500 Series monitoring systems
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Supports predictive maintenance strategies
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Helps reduce unexpected equipment failures and maintenance costs
Technical FAQs
1. What is the primary purpose of the 330851-02-000-030-10-00-05?
It is designed to measure shaft displacement, differential expansion, and axial shaft position using non-contact eddy current sensing technology.
2. Which monitoring system is this probe designed for?
It is used as part of the 3300 XL 25 mm Proximity Transducer System, including the probe, extension cable, and Proximitor Sensor.
3. What does the "02" probe option indicate?
The 02 suffix specifies an M30 × 2 metric threaded probe case for metric mounting applications.
4. What does the "030" option represent?
The 030 configuration indicates a 30 mm overall probe case length.
5. What cable length is supplied?
This model includes a 1.0-meter (3.3-foot) integral cable.
6. Is the cable armored?
No. The 00 armor option specifies a standard non-armored cable.
7. What does the "05" approval option mean?
The 05 suffix indicates Multiple Agency Approvals, making the probe suitable for a broad range of certified industrial installations.
8. What measurement range does the complete system provide?
When installed with the matching extension cable and Proximitor Sensor, the complete system delivers a 12.7 mm (500 mil) linear measurement range with an output sensitivity of 20 mV/mil (0.787 V/mm).
9. What are the dimensions and weight?
The probe features an M30 × 2 threaded body, 30 mm overall case length, and weighs approximately 0.23 kg.
10. Why choose the 330851-02-000-030-10-00-05?
Its compact dimensions, exceptional measurement accuracy, robust industrial construction, and seamless compatibility with Bently Nevada machinery protection systems make it an excellent choice for safeguarding critical rotating equipment.
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