BENTLY 330100-90-00 | 3300 XL 8mm Proximitor Sensor

• Brand: Bently Nevada
• Full Model Number: 330100-90-00
• Lifecycle Status: Active 3300 XL product family / legacy-system compatible
• Core Function: 3300 XL 8 mm Proximitor Sensor
• Top 3 Technical Specs: 9.0 m total system length; -17.5 to -26 VDC supply; 50 Ω output resistance
• Sensor System: 3300 XL 8 mm proximity transducer system
• Measurement: Shaft vibration, radial/axial position, speed and phase-reference applications
• Frequency Response: 0–6.5 kHz
• Linear Range: 2 mm / 80 mils
• Option Code: 90 = 9.0 m total length; 00 = hazardous-area approval not required
• Operating Temperature: Approximately 0°C to +55°C for the Proximitor electronics
• Stock & Condition: Exact stock confirmation required; New OEM / New Surplus / Tested Refurbished; Emergency shipping subject to cutoff

The 330100-90-00 part number is documented as a Bently Nevada 3300-series Proximitor Sensor. The suffix interpretation identifies 90 with a 9.0 m total system length and 00 as the configuration where hazardous-area approval is not required.

Module 3: Obsolescence & Supply Chain Deep Dive

A failed Proximitor can remove a critical shaft-position or vibration signal from a turbine, compressor, pump, generator, or other fluid-film-bearing machine. BENTLY 330100-90-00 is used within the 3300 proximity transducer architecture, where the Proximitor produces an output voltage proportional to the distance between the probe tip and the conductive shaft target. Public technical references specify a 9.0 m total system length, a 0–6.5 kHz frequency response, and a 2 mm linear range.

For TCO, matching the installed Proximitor is normally far less disruptive than replacing the complete machinery-monitoring chain. The existing 3300 probe, extension cable, monitor channel, cabinet wiring, and alarm configuration can remain in place when the electrical and mechanical configuration is correct. The key procurement issue is exact system matching: supply voltage, probe family, total cable length, hazardous-area requirement, and mounting arrangement must all be checked before release. (A physically similar Proximitor can still produce incorrect gap voltage or reduced linear range when the supply or transducer configuration is wrong.)

Module 4: Compatibility & Replacement Matrix

The documented 330100-90-00 configuration is associated with the 3300 proximity transducer system and the 9.0 m total-length option. The Proximitor accepts a compatible noncontacting probe and extension-cable combination.

⚠️ Field Traps — Watch Out

• Supply Voltage / Linear Range: Operation at a voltage more positive than approximately -23.5 VDC can reduce the specified linear range. Verify the actual supply before commissioning.
• Total-Length and Approval Mismatch: 330100-90-00 represents a 9.0 m configuration with hazardous-area approval not required. Do not substitute a different length or approval configuration simply because the Proximitor body looks identical.

BENTLY 330100-90-00

Module 5: Quality Assurance & Testing SOP

1. OEM anti-counterfeit visual inspection — verify Bently Nevada identification, complete 330100-90-00 marking, labels, enclosure, connectors, and manufacturing traceability.
2. Part-number decoding audit — record the 90 length option and 00 approval option against the purchase specification.
3. Mechanical inspection — inspect the housing, mounting base, connector, terminal block, probe interface, and enclosure for cracks, corrosion, deformation, or previous repair.
4. Electrical pre-screening — check input-path resistance, output resistance, grounding, and abnormal short-circuit conditions before energization.
5. Power-on self-test (POST) — energize using a controlled supply within the specified operating range and verify expected startup behavior.
6. Supply-voltage verification — confirm operation within the applicable -17.5 to -26 VDC range and verify that the operating point does not unnecessarily reduce linear range.
7. Probe-interface test — connect a compatible 3300-series probe and extension cable with the correct total system length.
8. Gap-voltage test — establish representative probe-to-target gaps and verify stable output response across the specified linear region.
9. Dynamic vibration simulation — introduce controlled target movement and verify the corresponding AC output response over representative frequencies.
10. Output-load testing — verify the Proximitor output into the intended monitor input and check for signal attenuation, distortion, or instability.
11. Channel verification — confirm that the connected Bently Nevada monitor reports expected vibration/position values and does not generate false alarms.
12. Extended energized run — monitor supply current, output stability, thermal behavior, and intermittent signal faults.
13. Final QC release — photograph the identification label, retain electrical test results, package the unit with ESD and mechanical protection, and preserve traceability.

The Proximitor is an analog transducer-interface device, so a conventional PLC-style I/O load test is not the correct acceptance method. Gap-voltage, dynamic response, output-load, and monitor-channel verification are the relevant controls.

Module 6: Procurement & Lifecycle FAQ

Q1. Is BENTLY 330100-90-00 genuinely in stock, and what is the cutoff for emergency shipping?
Exact inventory should be confirmed against 330100-90-00, quantity, condition, and destination before PO release. Current supplier references show both in-stock and short-lead-time offerings, but emergency dispatch should be confirmed directly against physical warehouse inventory.

Q2. How do you verify the condition and authenticity of a 330100-90-00 Proximitor?
Require complete part-number verification, OEM marking inspection, enclosure and connector examination, electrical screening, controlled power-up, gap-voltage testing, dynamic response testing, output-load verification, and monitor-channel confirmation. The unit should remain traceable to its QC record.

Q3. Are there firmware compatibility issues engineers should check before issuing the PO?
No firmware flash is normally involved in replacing the Proximitor itself. The engineering checks concern the probe family, total system length, supply voltage, barrier configuration, monitor input compatibility, and hazardous-area requirements. Verify these parameters before installation.

Q4. Can another 3300 Proximitor replace 330100-90-00?
Only after the complete transducer-system requirements are matched. The replacement must support the applicable probe, extension-cable length, power range, output characteristics, and site approval requirements. A different option code can change the total system length or certification status.

Q5. What warranty and return terms should procurement require?
Require a written warranty period, DOA criteria, return-authorization procedure, serial/part-number traceability, and exclusions for incorrect supply voltage, improper probe installation, damaged connectors, or field modification. The quotation should state 330100-90-00, the tested condition, and the applicable configuration details.