Product Core Brief
- Model: 330106-05-30-10-02-CN
- Brand: Bently Nevada (Baker Hughes)
- Series: 3300 XL 8 mm Proximity Transducer System
- Core Function: Non-contact eddy-current armored reverse-mount probe for shaft relative vibration, axial position, and keyphasor measurement.
- Product Type: 8 mm armored reverse-mount proximity probe
- Key Specs: M10×1 thread | Armored | 0.5 mm unthreaded length | 30 mm case length | 1.0 m cable | 200 mV/mil sensitivity | CN approval
- Condition: New Surplus / Factory New (confirm label, approval marking, and probe tip condition before procurement)
Product Introduction
The Bently Nevada 330106-05-30-10-02-CN is a 3300 XL 8 mm armored reverse-mount proximity probe used in eddy-current shaft vibration and displacement measurement systems. It works together with a 3300 XL extension cable and a 3300 XL Proximitor sensor to form a complete transducer system.
The model code breaks down as follows:
| Segment | Value | Meaning |
|---|---|---|
| Base model | 330106 | 3300 XL 8 mm reverse-mount probe, M10×1 thread, armored |
| Unthreaded length | 05 | 0.5 mm unthreaded length |
| Case length | 30 | 30 mm overall case length |
| Total length | 10 | 1.0 m (3.3 ft) cable length |
| Sensitivity | 02 | Standard 200 mV/mil (7.87 V/mm) |
| Approval | CN | CN approval option |
This probe is typically installed on fluid-film bearing machinery such as steam turbines, centrifugal compressors, gas turbines, generators, and large pumps. The reverse-mount design allows installation from inside the machine case, which is useful where external access is limited. The armored cable construction provides extra protection against mechanical damage during routing.
It measures the gap between the probe tip and the rotating shaft surface, producing a voltage signal proportional to that gap. The system can monitor shaft radial vibration, axial thrust position, eccentricity, and keyphasor reference.
The 330106 is the armored version of the reverse-mount probe. It should be paired with a matching 3300 XL extension cable and Proximitor sensor of the same system length.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | 3300 XL 8 mm armored reverse-mount proximity probe |
| Brand | Bently Nevada (Baker Hughes) |
| Model | 330106-05-30-10-02-CN |
| Thread | M10×1 |
| Armor | Armored |
| Unthreaded Length | 0.5 mm |
| Overall Case Length | 30 mm |
| Cable Length | 1.0 m (3.3 ft) |
| Sensitivity | 200 mV/mil (7.87 V/mm) |
| Linear Range | Approximately 2 mm (80 mils) for 8 mm probes |
| System Compatibility | 3300 XL 8 mm extension cable + Proximitor sensor |
| Approval | CN |
| Typical Applications | Shaft vibration, axial displacement, keyphasor, eccentricity |
Exact connector type, cable length compatibility, and approval markings should be confirmed against the product label and OEM documentation.
Quality Control Process (DYNAMIC GENERATION)
- Part-number verification: Confirm 330106-05-30-10-02-CN on the probe label or packaging.
- Visual inspection: Check the probe body, armored cable jacket, and connector for cracks, crushing, or chemical damage.
- Probe tip inspection: Verify the sensing face is free of scratches, coating damage, or contamination.
- Connector check: Inspect the ClickLoc or compatible connector for pin damage, seal integrity, and thread condition.
- Continuity test: Verify probe coil resistance and cable continuity if test equipment is available.
- System match check: Confirm the probe, extension cable, and Proximitor sensor share the same system length and approval requirements.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ Do not confuse 330106 with 330105 or 330103. 330103 is the standard forward-mount M10×1 non-armored probe, 330105 is the reverse-mount M10×1 non-armored probe, and 330106 is the reverse-mount M10×1 armored probe. Using the wrong mounting type or armor type may prevent installation.
❗ Verify the unthreaded length and case length. The “05-30” means 0.5 mm unthreaded length and 30 mm overall case length. Substituting different lengths may change the mechanical fit in the probe holder or bracket.
❗ Match the system length. The probe, extension cable, and Proximitor sensor must form a consistent system length (0.5 m, 1.0 m, 5.0 m, or 9.0 m). Mixing different system lengths can degrade linearity and accuracy.
❗ Confirm the approval suffix. The CN approval option is a regional compliance variant. Replacing it with a different approval code (e.g., 00 or 05) may affect regional certification or hazardous-area compliance requirements.
❗ This is not a casing vibration transmitter. The 330106 measures shaft relative vibration, not casing vibration. It should not be substituted for 177230 seismic transmitters or velocity sensors.
❗ Check the gap voltage during installation. For 8 mm probes, the typical target gap voltage is approximately −10.0 VDC, corresponding to a recommended installation gap of about 1.27 mm. Incorrect gap setting will cause measurement errors or false alarms.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Alternative | Compatibility Level | Migration Notes |
|---|---|---|---|
| Bently Nevada 330106-05-30-10-02-CN | Same 330106-05-30-10-02-CN | Direct | Match full order code, unthreaded/case length, and approval. |
| Bently Nevada 330106-05-30-10-02-05 | 330106-05-30-10-02-CN | Needs Verification | Different approval option; confirm whether CN approval is required. |
| Bently Nevada 330106-05-30-10-02-00 | 330106-05-30-10-02-CN | Needs Verification | Different approval option; confirm whether agency approval is needed. |
| Bently Nevada 330106-05-30-05-02-CN | 330106-05-30-10-02-CN | Needs Verification | Different cable length (0.5 m vs. 1.0 m); verify system compatibility. |
| Bently Nevada 330105-02-12-10-02-CN | 330106-05-30-10-02-CN | Not direct | 330105 is non-armored; 330106 is armored. Different case lengths. |
| Bently Nevada 330103-00-04-10-02-CN | 330106-05-30-10-02-CN | Not direct | 330103 is forward-mount; 330106 is reverse-mount. |
Benchmarks:
- 3300 XL 8 mm armored reverse-mount proximity probe for shaft relative vibration and displacement.
- M10×1 thread, armored construction.
- 0.5 mm unthreaded length, 30 mm overall case length.
- 1.0 m cable length.
- 200 mV/mil (7.87 V/mm) sensitivity with approximately 2 mm linear range.
- CN approval option.
- Must be used with matching 3300 XL extension cable and Proximitor sensor.
- Third-party listings that describe 330106 as a velocity sensor, 4–20 mA transmitter, or casing vibration sensor are incorrect.
