330876-01-50-00-00 Bently Nevada 3300 XL 50 mm Probe

330876-01-50-00-00 | 3300 XL 50 mm High-Temperature Proximity Probe

Bently Nevada 330876-01-50-00-00 is a 3300 XL 50 mm proximity probe for non-contact displacement and vibration measurement in demanding rotating machinery environments. Its high-temperature construction supports steam-turbine applications where probe temperature, moisture ingress, cable routing, and measurement stability require careful consideration.

This configuration has a ½-20 straight-exit case, a 5.0 m probe cable, High Temperature FluidLoc cable, and no agency approvals. The 5.0 m probe is intended for use with a compatible 5.0 m Proximitor Sensor.

Configuration Breakdown — Read the Part Number

330876-01-50-00-00

• 330876 — 3300 XL 50 mm proximity probe family
• -01 — ½-20 English thread, straight-exit case
• -50 — 5.0 m total probe length (16.4 ft)
• -00 — High Temperature FluidLoc cable option
• -00 — No agency approvals

Configuration note: The probe’s 5.0 m length is a system-matching requirement, not simply a cable-length preference. Confirm the installed Proximitor Sensor model and its approved probe/cable combination before ordering.

Technical Data | Probe-Level Specifications

Design Features | What Matters in the Field

• High-temperature capability: The probe supports continuous operation up to 200°C and short-term exposure up to 250°C for less than 24 hours, within the stated conditions.
• Moisture protection: Front and rear seals work with the High Temperature FluidLoc cable to help prevent moisture from reaching the probe tip.
• High-temperature connectors: Special ClickLoc connectors are supplied for the probe and extension-cable interface.
• Connector protection: Connector protectors and a disposable installation tool help keep mating surfaces free from contamination during handling.
• Routing access: The removable collar on the probe-lead ClickLoc connector can help technicians route the cable through restricted clearances.
• Mounting format: The straight-exit case uses a ½-20 thread. The 3300 XL 50 mm family also includes other case configurations, but they are not interchangeable without checking the mounting arrangement.

Configuration and Installation Checks

1. Match the measurement chain. Verify the 50 mm probe, compatible extension cable, and five-meter Proximitor Sensor as a complete approved system.
2. Check the mounting geometry. Confirm the ½-20 thread, available engagement length, probe orientation, target clearance, and physical access before installation.
3. Protect the connector interface. Keep ClickLoc contacts clean and dry during installation. Fit the supplied connector protectors as appropriate.
4. Review the thermal profile. Distinguish continuous temperature from brief excursions. Do not treat the 250°C short-term rating as a continuous operating limit.
5. Commission against the system manual. Verify gap voltage, signal response, channel configuration, and alarm settings using the applicable Proximitor and monitor documentation.

Equipment and Application Fit

• Steam turbines: Monitoring shaft displacement or vibration in high-temperature drive-end (DE) environments, subject to the installed system’s design and measurement requirements.
• Turbine bearing locations: Non-contact shaft-position measurement where probe temperature and moisture exposure are significant design factors.
• Rotating machinery protection: Use within a compatible Bently Nevada 3300 XL proximity measurement chain connected to an appropriate monitoring system.
• Maintenance and retrofit projects: Replacement of an existing probe only after confirming part number, case thread, cable length, sensor compatibility, and approval requirements.

Application boundary: This probe is a sensing component, not a standalone vibration monitor. Channel accuracy, linear range, alarm functions, and protection logic depend on the complete probe–extension cable–Proximitor–monitor configuration and the target material and geometry.

Selection Comparison | 330876-01-50-00-00 vs. 330876-01-90-00-05

Compare the requested probe with the linked alternative before selecting a replacement. The alternative’s product page identifies the same 3300 XL 50 mm probe family, but its complete suffix configuration should be checked against the manufacturer’s documentation.

Technical recommendation: Choose 330876-01-50-00-00 when the installed system requires the specified 5.0 m probe and its no-approval configuration is acceptable. Consider 330876-01-90-00-05 only after confirming its actual cable length, approval status, cable option, and compatibility with the installed Proximitor Sensor. A different probe length or approval code can affect system matching and site compliance; do not substitute by family name alone.

Global PLC Spare HUB’s Insight | Maintenance and Diagnostics

Field insight: For a turbine probe replacement, record the existing probe’s full part number and the Proximitor Sensor model before removing the assembly. Preserve baseline gap and channel readings where plant procedures permit. If readings change after replacement, check configuration and installation first; do not assume the probe alone is faulty.

Supply, Warranty and Shipping

• Condition: New & Original in Factory Packing
• Factory warranty: 12 months
• Shipping options: FedEx, UPS, or DHL
• Dispatch: Confirm stock status and dispatch timing when requesting a quotation.
• Order verification: Provide the complete part number and, where possible, the installed Proximitor Sensor model to support compatibility review.

Frequently Asked Questions

Q1. Can this five-meter probe connect to a Proximitor Sensor with a different cable-length rating?

A. Do not assume compatibility. The supplied configuration is intended for a five-meter Proximitor Sensor. Verify the exact probe, extension cable, and sensor combination against Bently Nevada system documentation.

Q2. Does the 250°C rating mean the probe can run continuously at that temperature?

A. No. The stated short-term limit is 250°C for less than 24 hours. Continuous operating and storage temperature is −35°C to +200°C. Review the actual thermal profile before selecting the probe.

Q3. What should I confirm if the existing probe uses a metric mounting thread?

A. This part number specifies a ½-20 English thread. Check the installed mounting hardware and machine drawing. Do not force an English-thread probe into a metric mounting point or rely on thread adapters without engineering approval.

Q4. Is the no-approval option suitable for a hazardous-area installation?

A. The supplied suffix identifies no agency approvals. If the installation requires hazardous-area certification, select a configuration with the required approvals and verify the complete system’s certification conditions.

Q5. What information should I send when requesting a replacement quotation?

A. Send the full probe part number, installed Proximitor Sensor model, existing probe length, mounting-thread details, operating temperature, and any required site approvals. These details help prevent a length, mounting, or certification mismatch.

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