330876-02-10-00-00 Bently Nevada 3300 XL 50 mm Proximity Probe

330876-02-10-00-00 | Bently Nevada 3300 XL 50 mm Proximity Probe

High-temperature shaft monitoring • M14 × 1.5 case thread • 1.0 m FluidLoc probe cable

The Bently Nevada 330876-02-10-00-00 is a 3300 XL 50 mm proximity probe configured for demanding machinery-monitoring environments, including steam turbine drive-end (DE) locations. Its high-temperature FluidLoc cable, front and rear probe seals, and high-temperature ClickLoc connectors are designed to help maintain probe integrity where elevated temperature and moisture exposure are concerns.

The probe is used as part of a compatible proximity measurement chain to monitor shaft position or displacement-related vibration. Its suitability for a particular machine depends on the installed monitoring system, probe mounting geometry, target material, operating temperature and required measurement range.

Configuration identity: decode the ordered part

Configuration note: The supplied code description identifies the M14 × 1.5 case thread, 1.0 m probe length, high-temperature FluidLoc cable and no agency approvals. Confirm the full ordered configuration against the equipment’s existing probe and the applicable manufacturer documentation before replacement.

Thermal capability: continuous duty versus short-term exposure

The 250°C value is a short-term limit, not a continuous operating rating. For installation planning, distinguish the actual probe and cable temperature from nearby casing or steam temperature, and verify that the expected exposure duration stays within the stated limits.

Probe construction and electrical characteristics

The 3300 XL 50 mm design incorporates front and rear seals intended to help prevent moisture ingress at the probe tip. High-temperature ClickLoc connectors are standard on the probe and extension cable. Connector protectors and a disposable protector installation tool are supplied to help keep connector interfaces clean during handling and installation.

The probe-lead ClickLoc connector has a removable collar to assist cable routing through restricted clearances. Route the cable without sharp bends, crushing, or strain at the connector, and follow the applicable installation instructions.

Where this probe is used

• Steam turbine drive-end monitoring: shaft displacement or vibration measurement in high-temperature DE locations, when used with a compatible Bently Nevada measurement chain.
• Turbine rotor monitoring: non-contact shaft measurement for machinery condition monitoring and protection applications.
• High-temperature rotating machinery: installations where ordinary probe cable or connector temperature limits may be unsuitable.
• Plant machinery protection systems: replacement or maintenance of a specified 3300 XL 50 mm probe within an existing compatible system.

Do not infer system compatibility from the probe family name alone. Check the complete measurement chain—including the probe, extension cable, Proximitor or compatible driver, monitor channel, mounting arrangement and calibration requirements—against the machine’s installed configuration.

Installation and commissioning checkpoints

1. Confirm the replacement match. Compare the complete part number, thread, total length, cable construction, connector style and approval requirements with the installed component and equipment records.
2. Check the mounting geometry. Verify the M14 × 1.5 mounting thread, available engagement and clearance. The stated maximum thread engagement is 21 mm; do not exceed the applicable mounting instructions.
3. Review the thermal profile. Establish the temperature at the probe, cable and connector locations. Keep continuous exposure within −35°C to +200°C and reserve the +250°C rating for exposure under 24 hours.
4. Protect the connector interface. Keep ClickLoc contacts clean during installation. Use the supplied connector protection items as directed and avoid contamination or mechanical damage.
5. Verify the measurement chain. Confirm the connected extension cable and driver/Proximitor are appropriate for the probe and monitoring system. Follow the system’s calibration and gap-setting procedure.
6. Record baseline readings. After commissioning, document the channel’s baseline, shaft position or gap reading, and observed signal stability according to the site’s maintenance procedure.

Field diagnostics: what to inspect when readings are abnormal

The supplied specifications do not provide a model-specific alarm-code list or monitor fault-code table for this probe. Use the relevant Bently Nevada monitor, driver and system manuals for channel fault indications and acceptance limits.

Global PLC Spare HUB's Insight

For high-temperature turbine probe replacement, the most consequential checks are often the actual probe-location temperature, cable/connector condition and compatibility with the installed measurement chain. A nominally correct 50 mm probe may still be unsuitable if its thread, cable length, approval configuration or associated driver differs from the plant’s documented setup.

This part is specified with an M14 × 1.5 case thread, 1.0 m high-temperature FluidLoc cable and no agency approvals. Before purchase, compare those details with the installed probe and confirm whether the application requires a particular approval. The stated +250°C capability should be treated as a limited-duration rating, not a continuous design temperature.

Product supply, warranty and shipping

• Part number: 330876-02-10-00-00
• Condition: New and original in factory packing, as stated by supplier
• Factory warranty: 12 months, subject to applicable warranty terms
• Shipping methods: FedEx, UPS or DHL, subject to destination and shipment arrangements
• Quotation support: Provide the part number, quantity, destination and relevant equipment details to confirm the order configuration and delivery options.

Frequently Asked Questions

Q1. Is the +250°C rating suitable for continuous turbine operation?

No. The specified continuous operating and storage range is −35°C to +200°C. The +250°C rating applies to short-term exposure lasting less than 24 hours. Determine the temperature at the probe and cable themselves when evaluating the application.

Q2. What should I compare when replacing a probe that looks physically similar?

Compare the full part number, case thread, probe length, cable type and length, connector arrangement, approvals and measurement-chain compatibility. Similar dimensions or a shared 3300 XL family designation do not by themselves establish an interchangeable replacement.

Q3. Why does the cable length matter when selecting a proximity probe?

The probe is part of an electrical measurement chain. Cable length and the associated extension/driver configuration affect whether the installed system matches its intended specifications. Confirm the complete chain and calibration requirements rather than selecting by probe length alone.

Q4. What practical checks help distinguish a probe issue from an installation or system issue?

Review connector condition, cable integrity, mounting depth, target geometry, thermal exposure and the configured driver/monitor components. Compare readings using the site’s approved diagnostic procedure and known-good channel references where permitted. Avoid swapping components without recording the original configuration and readings.

Q5. What details should I send for a replacement-probe quotation?

Provide the complete part number, quantity, machine type and probe location, existing thread and cable length, associated measurement-chain part numbers, expected temperature and any required agency approval. These details help assess whether the ordered configuration matches the installed application.

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