Introduction
The Bently Nevada 330194-17-25-15-00 is a 3300 XL 8 mm Extended Temperature Range (ETR) Proximity Probe designed with an M10 x 1 metric thread and armored cable construction. This particular configuration features a 170 mm unthreaded length, 250 mm overall case length, and a 1.5 m (4.9 ft) total probe length.
As part of the 3300 XL 8 mm proximity transducer family, the probe provides non-contact measurement of conductive rotating machinery targets. It can be integrated into compatible machinery-monitoring systems for shaft vibration, radial position, axial position, and other critical operating measurements.
The combination of a long 250 mm case, 170 mm unthreaded section, armored cable, and 1.5 m total length makes this model especially attractive for installations where mounting depth and cable protection are important. It offers a robust solution for demanding industrial environments while maintaining the compact sensing characteristics expected from the 3300 XL platform.
Technical Specifications
The model number provides a useful breakdown of the physical configuration. 330194 identifies the M10 x 1, armored 3300 XL 8 mm ETR probe family. 17 specifies the 170 mm unthreaded length, 25 specifies the 250 mm overall case length, 15 indicates the 1.5 m total length, and the final 00 indicates that no additional agency approval option is specified.
| Specification | 330194-17-25-15-00 |
|---|
| Manufacturer | Bently Nevada |
| Product Family | 3300 XL |
| Product Type | 8 mm ETR Proximity Probe |
| Model Number | 330194-17-25-15-00 |
| Probe Series | 330194 |
| Mounting Thread | M10 x 1 |
| Cable Construction | Armored |
| Unthreaded Length | 170 mm |
| Overall Case Length | 250 mm |
| Total Probe Length | 1.5 m (4.9 ft) |
| Probe Tip Diameter | 8.0 mm (0.31 in) |
| Cable Type | 75 Ω triaxial |
| Cable Diameter, Inner Cable | Approx. 3.68 mm (0.145 in) maximum |
| Armored Cable Diameter | Approx. 7.67 mm (0.302 in) |
| Armor Ferrule Diameter | Approx. 9.5 mm (0.38 in) maximum |
| Connector | Miniature male coaxial connector |
| Connector Diameter | Approx. 7.24 mm (0.285 in) maximum |
| Total Length Tolerance | +30%, -0% |
| Temperature Design | Extended Temperature Range |
| Agency Approval Code | 00 – Not required |
| Mounting Style | Standard Mount |
| Typical System | 3300 XL 8 mm Proximity Transducer System |
Applications
The 330194-17-25-15-00 is intended for non-contact monitoring of rotating machinery, particularly installations where a long probe body and armored cable are advantageous.
When paired with the appropriate 3300 XL Proximitor Sensor, the probe forms part of a proximity transducer system capable of detecting changes in the distance between the probe tip and a conductive machine target.
Common applications include:
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Steam turbine shaft vibration monitoring
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Gas turbine machinery protection
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Compressor rotor monitoring
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Generator shaft measurement
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Centrifugal pump monitoring
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Motor and rotating equipment monitoring
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Radial shaft-position measurement
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Axial shaft-position measurement
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Bearing vibration monitoring
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Critical machinery protection
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Industrial predictive maintenance systems
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Turbomachinery condition monitoring
The 170 mm unthreaded section can be particularly useful in installations where the sensing position is located deeper inside a machine housing or where additional clearance is required between the probe mounting point and the measurement target.
The armored construction is also valuable in machinery areas where cables may be exposed to mechanical contact, vibration, abrasion, or challenging routing conditions.
Advantages
Extended 250 mm case
The 250 mm case length gives the 330194-17-25-15-00 a substantially longer mechanical profile than standard compact probe configurations. This makes it suitable for applications where a short-body probe cannot provide the required installation reach.
170 mm unthreaded section
The 170 mm unthreaded section offers additional installation flexibility for deeper mounting arrangements. It can help position the sensing tip correctly while accommodating the physical geometry of the machinery housing.
Armored cable protection
The 330194 series incorporates an armored cable, providing an additional layer of mechanical protection around the standard triaxial cable. This is a significant advantage in demanding industrial environments.
1.5-meter total length
The 1.5 m cable configuration provides useful installation reach without the extra cable associated with 5 m or 9 m configurations. It is a practical choice for installations where the monitoring electronics are located at a moderate distance from the probe.
M10 x 1 metric mounting
The metric M10 x 1 thread makes this probe suitable for machinery designed around metric mounting hardware. It also clearly differentiates the model from the 3/8-24 UNF configurations in the 330191 and 330192 families.
8 mm non-contact sensing
The 8 mm sensing tip provides a proven non-contact approach for monitoring conductive rotating targets. Properly installed, the complete system can deliver valuable vibration and shaft-position information without physical contact between the probe and rotating component.
ETR construction
The Extended Temperature Range design makes this probe well suited to industrial machinery applications where operating temperature is an important installation consideration.
Strong mechanical installation profile
The combination of a long case, extended unthreaded section, and armored cable makes this configuration particularly well suited to machinery installations where ordinary short, non-armored probes may not provide enough mechanical protection or installation flexibility.
Technical FAQs
1. What is the Bently Nevada 330194-17-25-15-00?
It is a 3300 XL 8 mm ETR Proximity Probe with an M10 x 1 metric thread, armored cable, 170 mm unthreaded length, 250 mm case length, and 1.5 m total length.
2. Is the 330194-17-25-15-00 an armored probe?
Yes. The 330194 family is the M10 x 1 armored version of the 3300 XL 8 mm ETR proximity probe.
3. What does “17” mean in the part number?
The 17 identifies a 170 mm unthreaded length.
4. What does “25” represent?
The 25 identifies the 250 mm overall case length, which is the maximum standard metric case length available in this probe family.
5. What does “15” mean?
The 15 specifies a 1.5 m (4.9 ft) total probe length.
6. What thread does this probe use?
It uses an M10 x 1 metric thread.
7. What is the diameter of the sensing tip?
The probe tip has a nominal diameter of 8.0 mm (0.31 in).
8. What is the diameter of the armored cable?
The armored cable has an outside diameter of approximately 7.67 mm (0.302 in). The armor ferrule can reach approximately 9.5 mm (0.38 in) at its maximum diameter.
9. What is the approximate weight of the probe?
For product handling and logistics planning, approximately 0.5 kg can be used as an estimated weight for the 1.5 m armored assembly. Actual weight may vary slightly depending on the finished configuration and packaging.
10. What should be verified before ordering a replacement?
Confirm the complete configuration, including M10 x 1 thread, 170 mm unthreaded length, 250 mm case length, 1.5 m total length, armored cable construction, connector configuration, agency approval, and compatible Proximitor Sensor. Matching only the 8 mm probe diameter is not sufficient to establish interchangeability.
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