Engineered for Rugged Industrial Environments and Precision Shaft Monitoring
The Bently Nevada 330851-02-000-026-50-01-05 3300 XL 25 mm Proximity Probe is a high-performance non-contact eddy current sensor designed for continuous monitoring of differential expansion, axial shaft position, and rotor displacement in critical rotating machinery. As an integral component of the 3300 XL 25 mm Proximity Transducer System, this probe delivers exceptional accuracy, long-term measurement stability, and reliable operation in demanding industrial applications. The complete system consists of a precision probe, a matched extension cable, and a dedicated Proximitor Sensor, ensuring optimized performance throughout the measurement chain.
This 330851-02-000-026-50-01-05 configuration incorporates an M30 × 2 threaded probe body, 26 mm overall case length, 5.0 m integral FluidLoc cable, stainless-steel armor, and multiple agency approvals. The armored cable enhances resistance to abrasion, vibration, and mechanical damage, making this model an excellent solution for harsh industrial environments where dependable machinery protection is essential.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330851-02-000-026-50-01-05 |
| Product Type | 3300 XL 25 mm Proximity Probe |
| Product Series | 3300 XL 25 mm Proximity Transducer System |
| Measurement Technology | Non-contact Eddy Current |
| Probe Case Type | M30 × 2 Thread |
| Unthreaded Length | 0 mm |
| Overall Case Length | 26 mm |
| Integral Cable Length | 5.0 m (16.4 ft) |
| Cable Type | 75 Ω FluidLoc Triaxial Cable |
| Armor Option | Flexible Stainless-Steel Armor |
| Agency Approval | Multiple 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 Overall Case Length |
| Weight | Approximately 0.33 kg |
Typical Industrial Applications
Designed for continuous online condition monitoring, the 330851-02-000-026-50-01-05 is suitable for protecting high-value rotating assets operating in severe industrial environments.
Typical applications include:
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Steam turbine supervisory instrumentation (TSI)
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Differential expansion measurement
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Axial shaft position monitoring
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Rotor displacement monitoring
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Large 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 facilities
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Petrochemical processing plants
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Oil & gas production platforms
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Refinery rotating equipment
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Heavy-duty industrial machinery
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OEM machinery protection systems
Its armored cable construction provides additional mechanical protection while maintaining outstanding signal quality and long-term measurement accuracy.
Why Choose This Model?
The 330851-02-000-026-50-01-05 combines precision sensing technology with enhanced mechanical durability, making it an excellent choice for demanding industrial monitoring applications.
Key advantages
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High-accuracy non-contact eddy current measurement
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Compact 26 mm probe body for space-constrained installations
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Durable stainless-steel armored cable
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Wide 12.7 mm (500 mil) linear measurement range
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Rugged AISI 304 stainless-steel housing
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High-temperature PEEK probe tip
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Excellent resistance to vibration, oil, and mechanical wear
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Stable long-term performance with minimal maintenance
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Fully compatible with Bently Nevada 3500 Series monitoring systems
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Supports predictive maintenance and improves equipment availability
Technical FAQs
1. What is the primary function of the 330851-02-000-026-50-01-05?
It measures shaft displacement, differential expansion, and axial shaft position using non-contact eddy current sensing technology.
2. Which transducer system is this probe designed for?
It is designed for the 3300 XL 25 mm Proximity Transducer System, including a matching extension cable and Proximitor Sensor.
3. What does the "02" case option indicate?
It specifies an M30 × 2 threaded probe body, suitable for metric mounting applications.
4. What does the "026" option represent?
It identifies an overall probe case length of 26 mm, providing a compact installation profile.
5. What cable length is supplied?
This model includes a 5.0-meter (16.4-foot) integral FluidLoc cable for flexible installation.
6. Is the cable armored?
Yes. The 01 armor option indicates flexible stainless-steel armor, providing superior protection against abrasion and mechanical damage.
7. What measurement range does the complete system provide?
The complete transducer system offers a 12.7 mm (500 mil) linear measurement range with an output sensitivity of 20 mV/mil (0.787 V/mm).
8. What is the operating temperature range?
The probe is designed for operating temperatures from -35°C to +200°C, making it suitable for harsh industrial environments.
9. What are the dimensions and weight?
The probe features an M30 × 2 threaded body, 26 mm overall case length, and weighs approximately 0.33 kg.
10. Why select the 330851-02-000-026-50-01-05?
Its compact dimensions, armored cable protection, high measurement accuracy, and compatibility with the complete 3300 XL monitoring platform make it an ideal choice for protecting mission-critical rotating equipment.
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