Product Core Brief
- Model: 330876-03-90-00-05
- Brand: Bently Nevada (Baker Hughes)
- Series: 3300 XL 8 mm Proximity Transducer System
- Core Function: Complete eddy-current transducer system for shaft radial vibration, axial position, eccentricity, and Keyphasor measurement on fluid-film bearing machines.
- Product Type: 3300 XL 8 mm Proximity Transducer System (probe + extension cable + Proximitor Sensor)
- Key Specs: 9.0 m total system length | FluidLoc extension cable | 05 (multi-license) approval | 2 mm linear range | 200 mV/mil (7.87 V/mm) sensitivity | 0–10 kHz frequency response
- Condition: New Surplus / Factory New (confirm label, connector condition, and approval marking before procurement)
Product Introduction
The Bently Nevada 330876-03-90-00-05 is a 3300 XL 8 mm Proximity Transducer System — a complete, factory-configured eddy-current sensor system that includes a 3300 XL 8 mm proximity probe, a 3300 XL extension cable, and a 3300 XL Proximitor Sensor.
The model code breaks down as follows:
| Segment | Value | Meaning |
|---|---|---|
| Base model | 330876 | 3300 XL 8 mm proximity transducer system |
| Cable option | 03 | FluidLoc extension cable (prevents oil migration along cable interior) |
| System length / mount | 90 | 9.0 m total system length, panel mount |
| Approval | 00 | No special approval on the Proximitor Sensor segment |
| System approval | 05 | Multi-license approval (system-level certification) |
Unlike ordering individual components separately, the 330876 series provides a pre-configured system that ensures probe, cable, and Proximitor Sensor compatibility without requiring individual bench calibration. The system outputs a DC voltage proportional to the gap between the probe tip and the conductive target surface, supporting both static (position) and dynamic (vibration) measurements.
The “03” cable option indicates a FluidLoc extension cable, which features a barrier that prevents oil or other liquids from migrating along the cable interior — a critical feature for machines with pressurized oil systems such as steam turbines and centrifugal compressors. The “90” option specifies a 9.0 m total system length with panel-mount Proximitor Sensor. The “05” suffix denotes multi-license approval covering multiple regional certification standards.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | 3300 XL 8 mm Proximity Transducer System |
| Brand | Bently Nevada (Baker Hughes) |
| Model | 330876-03-90-00-05 |
| System Composition | 3300 XL 8 mm probe + 3300 XL FluidLoc extension cable + 3300 XL Proximitor Sensor |
| Total System Length | 9.0 m (29.5 ft) |
| Cable Type | FluidLoc (oil-migration barrier) |
| Mounting | Panel mount (Proximitor Sensor) |
| Approval | 05 (multi-license) |
| Linear Range | 2.0 mm (80 mils), approximately 0.25–2.3 mm (10–90 mils) |
| Sensitivity | 200 mV/mil (7.87 V/mm) |
| Frequency Response | 0–10 kHz |
| Power Supply | −17.5 Vdc to −26 Vdc (without barriers), 12 mA max |
| Operating Temperature | −51 °C to +100 °C (standard probe) |
| Typical Applications | Shaft radial vibration, axial position, eccentricity, Keyphasor, differential expansion |
The 330876 system is fully compliant with API 670 (4th edition) for mechanical configuration, linear range, accuracy, and temperature stability. All 3300 XL 8 mm systems support complete interchangeability of probes, extension cables, and Proximitor Sensors without individual component matching or bench calibration.
Quality Control Process (DYNAMIC GENERATION)
- Part-number verification: Confirm 330876-03-90-00-05 on the system label or packaging.
- Component completeness: Verify all three components are present — 3300 XL 8 mm probe, 3300 XL extension cable, and 3300 XL Proximitor Sensor.
- Probe inspection: Check the probe tip (PPS material) for cracks, scratches, or contamination. Verify the ClickLoc connector for pin damage.
- Cable inspection: Confirm the FluidLoc cable jacket is intact with no cuts or abrasions. Verify the FluidLoc barrier is present at the connector end.
- Proximitor Sensor inspection: Verify the panel-mount base, SpringLoc terminals, and label markings.
- System length verification: Confirm the probe integral cable length plus extension cable length equals 9.0 m total.
- Label verification: Confirm the 05 (multi-license) approval marking matches site certification requirements.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ Do not substitute individual components without verifying total system length. The “90” option means 9.0 m total. The probe integral cable length plus extension cable length must equal 9.0 m. For example, a 1.0 m probe requires an 8.0 m extension cable; a 5.0 m probe requires a 4.0 m extension cable.
❗ Verify the FluidLoc cable option. The “03” option specifies a FluidLoc extension cable with an oil-migration barrier. Substituting a standard cable (00) may compromise sealing in pressurized oil systems.
❗ Confirm the mounting option. The “0” in “90” indicates panel mount. Substituting a DIN-rail version (91) may require enclosure modifications.
❗ Verify the approval suffix. The 05 approval denotes multi-license certification. Substituting 00 (no approval) or CN should be verified against site certification requirements.
❗ Do not confuse 330876 with individual component part numbers. 330876 is a system order code. The individual components within the system carry their own part numbers (e.g., 33010x for probe, 330130 for cable, 330180 for Proximitor Sensor).
❗ Ensure monitor compatibility. The system outputs a negative-going DC voltage signal (approximately −2 to −18 Vdc over the linear range). Verify the connected monitoring module (e.g., 3500/40M, 3500/42M, 3500/45M) accepts proximity probe input.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Alternative | Compatibility Level | Migration Notes |
|---|---|---|---|
| Bently Nevada 330876-03-90-00-05 | Same 330876-03-90-00-05 | Direct | Match full order code, cable type, system length, and approval. |
| Bently Nevada 330876-00-90-00-05 | 330876-03-90-00-05 | Needs Verification | Different cable type (standard vs. FluidLoc); verify oil-sealing requirements. |
| Bently Nevada 330876-03-50-00-05 | 330876-03-90-00-05 | Needs Verification | Different system length (5.0 m vs. 9.0 m); verify monitor gap voltage settings. |
| Bently Nevada 330876-03-90-00-00 | 330876-03-90-00-05 | Needs Verification | Different approval (00 no approval vs. 05 multi-license); verify site certification needs. |
| Bently Nevada 330106-05-30-05-02-05 + 330130-040-03-00 + 330180-90-00 | 330876-03-90-00-05 | Needs Verification | Individual components may be equivalent; verify total length = 9.0 m, FluidLoc cable, and approval compatibility. |
| Bently Nevada 330500-02-04 | 330876-03-90-00-05 | Not direct | 330500 is a casing velocity sensor; 330876 is a shaft proximity system. Different measurement principles. |
| Bently Nevada 330180-90-00 alone | 330876-03-90-00-05 | Not direct | 330180 is only the Proximitor Sensor; 330876 includes probe + cable + Proximitor. |
Benchmarks:
- Complete 3300 XL 8 mm proximity transducer system (probe + FluidLoc cable + Proximitor Sensor).
- 9.0 m total system length with panel-mount Proximitor Sensor.
- FluidLoc extension cable with oil-migration barrier.
- 05 (multi-license) approval.
- 2.0 mm linear range, 200 mV/mil (7.87 V/mm) sensitivity.
- 0–10 kHz frequency response, API 670 compliant.
- Fully interchangeable components — no individual bench calibration required.
- Third-party listings that describe 330876 as a single component (probe only, cable only, or Proximitor only) are incorrect.
This part number 330876-03-90-00-05 should be classified as a Bently Nevada 3300 XL 8 mm Proximity Transducer System — a complete, factory-configured system that includes a proximity probe, a FluidLoc extension cable, and a Proximitor Sensor.
The order code breakdown:
| Field | Value | Meaning |
|---|---|---|
| Base model | 330876 | 3300 XL 8 mm proximity transducer system |
| Cable option | 03 | FluidLoc extension cable (oil-migration barrier) |
| Length / mount | 90 | 9.0 m total system length, panel mount |
| Proximitor approval | 00 | No special approval on the Proximitor Sensor |
| System approval | 05 | Multi-license approval |
When procuring or replacing, verify the complete order code, FluidLoc cable type, 9.0 m total system length, panel-mount configuration, and 05 multi-license approval. Also confirm that the probe integral cable plus extension cable lengths sum to exactly 9.0 m, and that the connected monitoring module accepts proximity probe input (e.g., 3500/40M, 3500/42M, 3500/45M).
