Extended-Reach 5 mm Proximity Probe for Critical Rotating Machinery
The Bently Nevada 330171-00-20-90-02-00 3300 5 mm Proximity Probe is a precision eddy-current sensor designed for the 3300 5 mm Proximity Transducer System. Engineered for reliable non-contact measurement of shaft vibration, radial displacement, and shaft position, this probe provides stable performance in demanding industrial applications where accurate machinery protection is essential.
This configuration includes a 1/4-28 UNF threaded probe without armor, a 2.0-inch probe case, a 9.0-meter integral triaxial cable, a Miniature ClickLoc® connector, and the standard (non-hazardous area) approval option. Its extended cable length makes it particularly suitable for installations requiring long cable routing between the probe location and monitoring equipment.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330171-00-20-90-02-00 |
| Product Type | 3300 5 mm Proximity Probe |
| Series | 3300 5 mm Proximity Transducer System |
| Probe Technology | Eddy-current, non-contact measurement |
| Thread Size | 1/4-28 UNF |
| Armor Option | Without armor |
| Unthreaded Length | 00 = 0.0 in |
| Overall Case Length | 20 = 2.0 in (50.8 mm) |
| Total Cable Length | 90 = 9.0 m (29.5 ft) |
| Connector Option | 02 – Miniature coaxial ClickLoc® connector, standard cable |
| Agency Approval | 00 – Standard approval (general-purpose applications) |
| Probe Cable | 75 Ω FEP-insulated triaxial cable |
| Probe Tip Material | Polyphenylene Sulfide (PPS) |
| Probe Housing | AISI 303/304 Stainless Steel |
| Probe DC Resistance | 9.87 ± 0.90 Ω (9.0 m cable) |
| Tensile Strength | 222 N (50 lbf) |
| Operating Temperature | -35°C to +177°C |
| Minimum Bend Radius | 25.4 mm (1 in) |
| Approximate Dimensions | Probe case: 50.8 mm; Cable: 9.0 m |
| Approximate Weight | 0.323 kg |
| Shipping Weight | Approx. 2.0 kg |
Typical Applications
| Industry | Typical Equipment |
|---|
| Oil & Gas | Compressors, pumps, gas turbines |
| Power Generation | Steam turbines, generators |
| Petrochemical | Process compressors |
| Mining | Heavy rotating machinery |
| Marine | Propulsion systems |
| Industrial Manufacturing | Motors, blowers, gearboxes |
Typical monitoring applications include:
-
Shaft vibration monitoring
-
Radial shaft displacement measurement
-
Shaft position monitoring
-
Bearing condition monitoring
-
Continuous machine protection
-
Key Product Benefits
Long-Distance Installation Flexibility
The 9.0-meter integral cable allows greater installation flexibility, making the probe ideal for machinery where the monitoring electronics are located farther from the measurement point.
Accurate Non-Contact Measurement
Advanced eddy-current sensing technology delivers highly repeatable vibration and displacement measurements while eliminating mechanical wear associated with contact-based sensors.
Rugged Stainless Steel Construction
The probe features a corrosion-resistant stainless steel housing and a durable PPS sensing tip, providing reliable performance in harsh industrial environments.
Secure ClickLoc® Connector
The Miniature ClickLoc® connector provides a dependable electrical connection, simplifying installation while helping prevent accidental connector loosening caused by machine vibration.
Optimized for the 3300 Transducer System
Designed specifically for the 3300 5 mm Proximity Transducer System, the probe maintains factory-calibrated performance when paired with compatible extension cables and Proximitor® Sensors.
Low Maintenance and Long Service Life
Premium materials, high-quality cable construction, and proven sensor technology contribute to extended operational life and reduced maintenance requirements.
Technical FAQs
1. What is the 330171-00-20-90-02-00 used for?
It is used for non-contact monitoring of shaft vibration, shaft position, and radial displacement on rotating machinery.
2. What does the "20" option represent?
It specifies a 2.0-inch (50.8 mm) overall probe case length.
3. What cable length does this model include?
The 90 option provides a 9.0-meter (29.5 ft) integral cable.
4. Which connector is fitted to this probe?
It uses a Miniature coaxial ClickLoc® connector with a standard cable configuration.
5. What does the "00" approval option indicate?
It is the standard approval version intended for general-purpose industrial installations where additional hazardous-area certifications are not required.
6. Can this probe be used independently?
No. It is designed to operate as part of the complete 3300 5 mm Proximity Transducer System, together with a compatible extension cable and Proximitor® Sensor.
7. What material is used for the probe tip?
The sensing tip is manufactured from Polyphenylene Sulfide (PPS), providing excellent wear resistance and thermal stability.
8. What is the operating temperature range?
The probe operates from -35°C to +177°C, making it suitable for demanding industrial environments.
9. Which industries commonly use this probe?
It is widely used in oil and gas, petrochemical, power generation, mining, marine, and industrial manufacturing.
10. What are the primary advantages of this model?
Its extended cable length, compact design, stable measurement performance, rugged construction, and seamless compatibility with the 3300 monitoring platform make it an excellent solution for long-term machinery protection.
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