Precision Proximity Probe for Reliable Turbine and Compressor Protection
The Bently Nevada 330851-02-000-026-10-00-00 3300 XL 25 mm Proximity Probe is a high-performance non-contact eddy current sensor engineered for accurate measurement of shaft position, differential expansion, and rotor displacement in critical rotating machinery. As a key component of the 3300 XL 25 mm Proximity Transducer System, this probe is designed to provide outstanding linearity, long-term stability, and dependable performance in demanding industrial environments. The complete transducer system combines a precision proximity probe, extension cable, and Proximitor Sensor to deliver highly accurate displacement measurements for machinery protection and condition monitoring.
Configured with an M30 × 2 threaded probe body, 26 mm overall case length, 1.0 m integral cable, non-armored cable, and standard approval option, the 330851-02-000-026-10-00-00 is well suited for installations where compact dimensions and reliable sensing performance are required. Its robust stainless-steel construction and precision sensing technology help improve equipment reliability while supporting predictive maintenance strategies across a wide range of industrial applications.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330851-02-000-026-10-00-00 |
| 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 Thread |
| Unthreaded Length | 0 mm |
| Overall Case Length | 26 mm |
| Integral Cable Length | 1.0 m (3.3 ft) |
| Armor Option | No Armor |
| Agency Approval | No Approvals |
| Probe Case Material | AISI 304 Stainless Steel |
| Probe Tip Material | Polyetheretherketone (PEEK) |
| Output Sensitivity | 20 mV/mil (0.787 V/mm) |
| Linear Measurement Range | 12.7 mm (500 mils) |
| Operating Temperature | -35°C to +200°C |
| Compatible Components | 3300 XL 25 mm Extension Cable & Proximitor Sensor |
| Primary Measurements | Differential Expansion, Shaft Position, Rotor Displacement |
| Dimensions | M30 × 2 Thread × 26 mm Case Length |
| Weight | Approximately 0.23 kg |
Typical Applications
Designed for high-value rotating equipment, the 330851-02-000-026-10-00-00 provides dependable displacement measurement in continuous monitoring systems where precision and reliability are essential.
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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Large industrial compressors
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Steam turbine generators
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Gas turbines
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Power generation facilities
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Petrochemical processing plants
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Oil & gas production systems
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Refinery rotating equipment
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Heavy industrial machinery
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OEM machinery protection systems
Its compact 26 mm probe body allows installation in applications where space is limited while maintaining the high measurement accuracy expected from the 3300 XL product family.
Performance Benefits
The 330851-02-000-026-10-00-00 is engineered to deliver dependable monitoring performance throughout the lifecycle of critical rotating equipment.
Key advantages
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Compact 26 mm probe body for restricted installations
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High-precision non-contact eddy current sensing
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Wide 12.7 mm (500 mil) linear measurement range
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Excellent long-term measurement stability
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Durable AISI 304 stainless-steel construction
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PEEK probe tip for outstanding wear and thermal resistance
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Reliable performance in harsh industrial environments
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Seamless integration with Bently Nevada monitoring systems
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Supports predictive maintenance strategies
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Helps reduce unexpected downtime and maintenance costs
Technical FAQs
1. What is the primary purpose of the 330851-02-000-026-10-00-00?
It measures shaft displacement, differential expansion, and shaft position on rotating machinery using non-contact eddy current technology.
2. Which transducer system is this probe designed for?
It is part of the 3300 XL 25 mm Proximity Transducer System, consisting of a probe, extension cable, and Proximitor Sensor.
3. What does the "02" case type represent?
The 02 option specifies an M30 × 2 threaded probe case.
4. What does the "026" configuration indicate?
It identifies an overall probe case length of 26 mm, providing a compact installation profile.
5. What cable length is included?
This model includes a 1.0-meter (3.3-foot) integral cable.
6. Is the cable armored?
No. The 00 armor option indicates a standard non-armored cable.
7. What measurement range does the complete system provide?
The complete transducer system delivers a 12.7 mm (500 mil) linear measurement range with an output sensitivity of 20 mV/mil.
8. Which monitoring systems are compatible?
The probe is compatible with the 3300 XL 25 mm Proximitor Sensor, matching extension cable, and Bently Nevada 3500 Series machinery protection systems.
9. What are the dimensions and weight?
The probe features an M30 × 2 threaded body, 26 mm case length, and weighs approximately 0.23 kg.
10. Why choose the 330851-02-000-026-10-00-00?
Its compact design, precision measurement capability, durable construction, and compatibility with the complete 3300 XL monitoring platform make it an excellent solution for protecting critical rotating machinery.
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