Product Overview
The Bently Nevada 330171-20-55-05-02-05 is a 3300 5 mm Proximity Probe designed for non-contact measurement of shaft vibration, radial position, axial (thrust) position, Keyphasor®, and speed on fluid-film bearing rotating machinery. It is part of the 3300 5 mm Proximity Transducer System, which consists of a 3300 5 mm probe, a 3300 XL extension cable, and a 3300 XL Proximitor® Sensor. Together, these components provide a voltage output proportional to the distance between the probe tip and the target surface.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Part Number | 330171-20-55-05-02-05 |
| Product Type | 3300 5 mm Proximity Probe |
| Probe Thread | 1/4-28 UNF, without armor |
| Probe Diameter | 5 mm |
| Unthreaded Length | 2.0 in (20) |
| Overall Case Length | 5.5 in (55) |
| Probe Cable Length | 0.5 m (05) |
| Connector | Miniature coaxial ClickLoc®, standard cable (02) |
| Agency Approval | Multiple Approvals (05) |
| Probe Tip Material | Polyphenylene Sulfide (PPS) |
| Probe Case Material | AISI 303/304 Stainless Steel |
| Cable Type | 75 Ω triaxial FEP insulated |
| Operating Temperature | –35°C to +177°C (–31°F to +351°F) |
Typical Applications
The 330171-20-55-05-02-05 is commonly used on:
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Steam turbines
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Gas turbines
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Centrifugal compressors
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Electric motors
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Pumps
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Gearboxes
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Generators
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Process compressors
Typical measurements include:
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Shaft vibration
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Shaft position
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Axial displacement
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Speed measurement
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Keyphasor® reference
Key Features
High-Accuracy Non-Contact Measurement
Uses eddy-current sensing technology to accurately monitor:
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Shaft vibration
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Radial shaft position
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Axial (thrust) position
-
Keyphasor® reference
-
Speed measurements
without contacting the rotating shaft.
Compact 5 mm Probe
The smaller 5 mm probe design is well suited for installations with limited mounting space while maintaining stable measurement performance.
Wide Temperature Capability
Designed for continuous operation from –35°C to +177°C, making it suitable for demanding industrial environments.
Rugged Construction
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PPS probe tip
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Stainless-steel probe case
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FEP-insulated triaxial cable
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Gold-plated ClickLoc® connector
provide long service life and resistance to industrial environments.
Multiple Hazardous-Area Approvals
The 05 approval option provides multiple international hazardous-area certifications for installations requiring certified equipment.
Frequently Asked Questions
1. What does the "20" option represent?
It specifies a 2.0-inch unthreaded probe length.
2. What does the "55" option represent?
It specifies a 5.5-inch overall probe case length.
3. What cable length is supplied?
The 05 option provides a 0.5 m (1.6 ft) probe cable.
4. What connector does this probe use?
It uses a Miniature coaxial ClickLoc® connector with a standard cable (Option 02).
5. Is this probe armored?
No. The 330171 model is the non-armored version. Armored versions use the 330172 model number.
6. What does the final "05" indicate?
It specifies the Multiple Approvals agency certification option.
7. Which Proximitor® Sensor is compatible?
The probe is designed to operate with a 3300 XL Proximitor® Sensor and the appropriate 3300 XL extension cable as part of the complete transducer system.
8. What is the maximum operating temperature?
The probe is rated for continuous operation up to +177°C (+351°F).
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