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Product Introduction
The Bently Nevada 330171-00-08-90-01-05 is part of the trusted 3300 XL series of proximity transducer systems, widely used in machinery condition monitoring and protection systems. This specific model is a 5 mm reverse mount proximity probe, designed to deliver high-precision, non-contact measurements of shaft vibration and position in rotating machinery. Its reverse mount configuration allows installation from the rear side of the mounting surface, ideal for applications where space constraints prevent traditional forward installation.
As with other components in the 3300 XL series, this proximity probe is engineered for long-term durability and performance in demanding industrial environments. The probe integrates seamlessly with the 3300 XL Proximitor® Sensor and is compliant with API 670 standards, making it an excellent choice for critical monitoring in the oil & gas, petrochemical, and power generation sectors.
Technical Specifications
| Parameter | Specification |
| Part Number | 330171-00-08-90-01-05 |
| Series | Bently Nevada 3300 XL Series |
| Probe Type | Reverse Mount Proximity Probe |
| Tip Diameter | 5 mm |
| Mounting Thread Size | 1/4-28 UNF |
| Cable Length | 8 ft (2.4 m) |
| Total Length | 9 m |
| Measurement Range | Up to 2 mm (80 mils) |
| Linear Range | 0.25 mm to 2.0 mm |
| Sensitivity | 7.87 mV/μm (200 mV/mil) typical |
| Frequency Response | 0 to 10 kHz |
| Operating Temperature | -35°C to +177°C (-31°F to +351°F) |
| Shock Limit | 100 g pk |
| Vibration Limit | 10 g pk (55–500 Hz) |
| Material (Probe Body) | Stainless Steel |
| Cable Jacket | FEP (Fluorinated Ethylene Propylene) |
| Connector Type | Coaxial, BNC-style, stainless steel overbraid |
| Electrical Isolation | >10 MΩ between probe body and connector |
| Ingress Protection | IP65 (with proper installation and connectors) |
| Compliance | API 670, CE, RoHS |
| Probe Dimensions | Tip length: 40 mm; Body Diameter: 8 mm |
| Weight | 2.907 kg |
Applications
The 330171-00-08-90-01-05 proximity probe is utilized across a wide spectrum of industries where reliable and accurate measurement of dynamic shaft behavior is essential. Common applications include:
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Steam and Gas Turbines
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Centrifugal and Axial Compressors
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Electric Motors and Generators
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Gearboxes
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Pumps (centrifugal, multistage, or reciprocating)
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Blowers and Industrial Fans
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Paper Machines and Winders
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Marine Propulsion Systems
It is especially valued in hazardous environments, remote monitoring systems, and integrated plant condition monitoring setups.
Product Advantages
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Reverse Mount Flexibility: Provides practical installation in space-restricted environments or where front-side access is limited.
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API 670 Compliance: Meets global industry standards for critical rotating machinery protection.
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Excellent Linearity and Accuracy: Ensures precise measurements of shaft position and vibration amplitude across a wide range.
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High Temperature Tolerance: Rated for continuous operation up to 177°C.
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Durable Construction: Stainless steel body and FEP-insulated cable allow usage in chemically aggressive or high-vibration zones.
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Superior EMI Shielding: Stainless steel overbraid protects signal integrity in high-electromagnetic environments.
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System Integration: Fully compatible with 3300 XL extension cables and Proximitor sensors.
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Long Service Life: Designed for continuous, reliable performance in mission-critical installations.
Latest News Headlines (Related to Product and Industry)
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“Bently Nevada Launches Extended Range 3300 XL Proximity Probes”
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“API 670-Compliant Sensors See Surge in Predictive Maintenance Programs”
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“Reverse Mount Probe Designs Improve Accessibility in Compact Machinery Skids”
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“GE Bently Nevada Strengthens XL Series for Harsh Environments”
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“New Condition Monitoring Standards Emphasize Sensor Integration”
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“Bently Nevada Introduces High-Temperature Proximity Probe Options”
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“Data Accuracy Enhanced by Shielded Proximity Systems in Power Plants”
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“Upgraded Monitoring Solutions from Bently Nevada Enable Proactive Maintenance”
Frequently Asked Questions (FAQ)
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What is the primary purpose of this 330171 probe?
It measures shaft vibration and relative position using non-contact eddy current sensing technology. -
Why is it called a ‘reverse mount’ probe?
The probe is designed to be installed from behind the mounting surface, providing access flexibility in tight spaces. -
What proximity measurement range does it support?
The standard linear range is up to 2 mm (80 mils). -
Is it compatible with other Bently Nevada systems?
Yes, it is compatible with the 3300 XL Proximitor Sensor and extension cables. -
What’s the significance of the “-08” in the part number?
It denotes an 8-foot integral cable attached to the probe. -
Can the probe operate in high EMI environments?
Absolutely. It is shielded with a stainless-steel overbraid for excellent EMI resistance. -
Is this sensor suitable for hazardous environments?
While it has high resistance to harsh conditions, certification for hazardous locations depends on the overall system installation. -
How is the probe secured during installation?
It uses standard threaded mounts and locking nuts; torque specifications are available in the installation manual. -
What is the difference between this and the 8 mm probe version?
The 5 mm probe is for smaller shaft diameters or tight spaces, while 8 mm probes are used where more linear range is needed. -
How often should the probe be calibrated or checked?
Annual verification is recommended, though the rugged design supports multi-year uninterrupted service.
Recommended Models (Same Series or Related)
| Model Number | Description | Mount Type | Cable Length | Application |
| 330171-00-05-10-02-00 | 5 mm Reverse Mount Probe | Reverse | 5 ft | General Machinery |
| 330171-00-12-10-01-00 | 5 mm Reverse Mount Probe | Reverse | 12 ft | Skid Mounted Equipment |
| 330101-00-12-10-02-05 | 8 mm Forward Mount Probe | Forward | 12 ft | Heavy-Duty Applications |
| 330104-00-08-10-02-05 | 8 mm Probe with Armor Cable | Forward | 8 ft | Oil & Gas Compressors |
| 330130-040-00 | NSv Proximity Probe (Miniature Target) | Forward | 4 m | Small Shaft Applications |
| 330180-51-00 | Extension Cable for 3300 XL Probes | Cable | 1 m | Probe Extension |
| 330178-50-05 | Extension Cable Armored | Cable | 5 m | High EMI or Heat Environments |
| 330106-05-30-10-02-00 | XL Probe with Terminal Connection | Terminal Mount | 5 ft | OEM Integration |
Popular Models from Bently Nevada
| Model Number | Description | Category | Function |
| 3500/22M-01-01-00 | Transient Data Interface Module | Monitoring System | Data Interface for 3500 Series Rack |
| 3500/15-05-01-00 | Power Supply Module | Power Module | Powers 3500 System |
| 3500/42M-01-00 | Proximitor Monitor (2 Channels) | Monitor Module | Vibration and Position Monitoring |
| 330103-00-05-10-02-05 | 8 mm Proximity Probe | Sensor | Shaft Vibration Detection |
| 330180-91-00 | Extension Cable for Probes | Cable Assembly | Signal Transmission |
| 3500/05-01-01-00-00-01 | System Rack Frame | System Hardware | Housing for 3500 Modules |
| 330104-00-18-10-02-00 | 8 mm Armored Probe for Harsh Applications | Sensor | Rugged Machinery |
| 3500/20-01-02-00-00 | Rack Interface Display Module | Display Unit | Local Display for 3500 Monitoring Rack |
