BENTLY 330101-00-25-20-12-05 | 3300 XL 8mm Proximity Probe

• Brand: Bently Nevada
• Full Model Number: 330101-00-25-20-12-05
• Lifecycle Status: Active 3300 XL 8 mm product family
• Core Function: Noncontacting eddy-current proximity probe for shaft vibration and position measurement
• Top 3 Technical Specs: 8 mm probe diameter; 2.0 m total system length; FluidLoc cable with connector
• Thread: 3/8-24 UNF-2A
• Unthreaded Length: 0.0 in
• Case Length: 2.5 in
• Cable Configuration: 2.0 m; FluidLoc cable; miniature coaxial ClickLoc connector
• Approvals: CSA, ATEX, IECEx
• Measurement System: 3300 XL 8 mm Proximity Transducer System
• Recommended Gap: Approximately 1.27 mm / 50 mils
• Linear Range: 2.0 mm / 80 mils
• Stock & Condition: Exact stock confirmation required; New OEM / New Surplus / Tested Refurbished; emergency shipping subject to cutoff

Baker Hughes’ current 3300 XL 8 mm datasheet identifies 330101 as the standard 3/8-24 UNF probe without armor and defines the ordering structure as part number plus five configuration fields. For this specific configuration, 00 = 0.0 in unthreaded length, 25 = 2.5 in case length, 20 = 2.0 m total length, 12 = FluidLoc cable with miniature ClickLoc connector, and 05 = CSA/ATEX/IECEx approvals.

Module 3: Obsolescence & Supply Chain Deep Dive

A failed proximity probe can remove a critical shaft-position or vibration measurement from a turbine, compressor, pump, generator, or other rotating asset. BENTLY 330101-00-25-20-12-05 is an 8 mm 3300 XL probe intended for noncontact measurement of static position and dynamic vibration. The published configuration uses a 2.0 m total system length, a 2.5 in case, FluidLoc cable, and multiple hazardous-area approvals.

From a TCO standpoint, replacing the probe while retaining the compatible extension cable, Proximitor Sensor, monitor channel, and existing mechanical installation is usually far less disruptive than redesigning the entire machinery-monitoring chain. The 3300 XL system is designed for electrical and physical interchangeability among its compatible components, while the exact system length must still be matched to the Proximitor Sensor. (The wrong cable length or certification option can invalidate an otherwise correct-looking replacement.)

BENTLY 330101-00-25-20-12-05

Module 4: Compatibility & Replacement Matrix

Baker Hughes specifies that the probe and extension-cable lengths must be combined to match the Proximitor Sensor’s total system-length option. The same documentation specifies a 2.0 mm linear range, approximately 1.27 mm / 50 mils recommended radial-vibration gap, and a nominal sensitivity of 7.87 V/mm (200 mV/mil) for the standard system.

⚠️ Field Traps — Watch Out

• System-Length Mismatch: The 20 option specifies a 2.0 m total probe/system length. The installed Proximitor Sensor must use the corresponding total-length configuration. Do not mix a 2 m probe with a Proximitor intended for a different calibrated system length.
• Approval and Cable-Type Mismatch: 12 specifies FluidLoc cable and 05 specifies CSA, ATEX, and IECEx approvals. A standard-cable or non-approved variant may not satisfy the installed hazardous-area requirements.

Module 5: Quality Assurance & Testing SOP

1. OEM anti-counterfeit visual inspection — verify Bently Nevada markings, complete 330101-00-25-20-12-05 identification, probe construction, connector style, cable jacket, and manufacturing traceability.
2. Configuration-string audit — confirm 00 / 25 / 20 / 12 / 05 against the purchase specification and installed system.
3. Mechanical inspection — inspect the 8 mm probe tip, 3/8-24 UNF thread, case, cable exit, ClickLoc connector, and FluidLoc sealing features.
4. Cable-condition inspection — check for cuts, compression damage, oil ingress, jacket deterioration, connector damage, and excessive bend stress.
5. Electrical pre-screening — measure probe DC resistance and check connector continuity against the appropriate 3300 XL reference values.
6. Power-on test — connect the probe to a compatible 3300 XL Proximitor Sensor and verify expected supply and output behavior.
7. Static gap-voltage test — establish controlled probe-to-target gaps and verify the expected DC output response.
8. Linear-range verification — test representative points across the specified approximately 0.25 to 2.3 mm linear region and verify output scaling.
9. Dynamic signal testing — introduce controlled target movement and verify the corresponding AC vibration output.
10. Output-load testing — connect the Proximitor Sensor to the intended monitor input and verify stable signal transmission under representative load conditions.
11. System-length verification — confirm that the probe and extension-cable combination matches the connected Proximitor Sensor total-length option.
12. Hazardous-area documentation check — verify the CSA / ATEX / IECEx marking and configuration before release for a certified installation.
13. Extended operating test — monitor DC bias, AC response, connector stability, and signal drift for intermittent behavior.
14. Final QC release — photograph the identification label and connector, retain electrical and gap-test records, package against mechanical and ESD damage, and preserve traceability.

Baker Hughes provides dedicated test-pin access on 3300 XL Proximitor Sensors and states that the system’s output is proportional to probe-to-target distance, making gap and dynamic-response testing the appropriate acceptance method for this component.

Module 6: Procurement & Lifecycle FAQ

Q1. Is BENTLY 330101-00-25-20-12-05 genuinely in stock, and what is the cutoff for emergency shipping?
Exact availability should be confirmed against the complete 330101-00-25-20-12-05 configuration, quantity, condition, and destination before PO release. Current supplier listings report inventory for this part, but emergency dispatch should be confirmed against physical stock and the applicable daily shipping cutoff.

Q2. How do you verify the condition and authenticity of this probe?
Require complete part-number verification, OEM marking inspection, thread and probe-tip examination, FluidLoc cable inspection, connector inspection, resistance testing, controlled gap-voltage testing, dynamic response testing, and monitor-channel verification. The exact configuration string should remain attached to the QC record.

Q3. Are there any firmware compatibility issues engineers should check before issuing the PO?
No firmware flash is required for the probe itself. The critical engineering checks are 3300 XL compatibility, 2.0 m system-length matching, 3/8-24 UNF mounting, FluidLoc cable configuration, and CSA/ATEX/IECEx approval requirements. The connected Proximitor Sensor must also correspond to the required system length.

Q4. Can another 330101 configuration replace 330101-00-25-20-12-05?
Only after configuration review. The ordering fields define mechanical length, total system length, cable/connector type, and agency approval. A different suffix may require a different Proximitor Sensor, mounting arrangement, or hazardous-area approval basis.

Q5. What warranty and return terms should procurement require?
Require a written warranty period, DOA criteria, return-authorization process, serial/part-number traceability, and exclusions for incorrect installation, excessive mechanical loading, cable damage, improper gap setting, or incompatible system configuration. The quotation should state the complete 330101-00-25-20-12-05 configuration and supplied condition.