The Bently Nevada 330190-045-00-00, also cataloged as the 330190 Extension Cable, operates as a dedicated hardware component for high-frequency signal transmission between proximity probes and Proximitor sensors within 3300 XL 8 mm Transducer System networks. It matches total system electrical capacitance and impedance to transfer dynamic shaft position and vibration signals with minimal attenuation.
Suffix Breakdown & Model Matrix
| Option Code | Specification Parameter | Value / Description |
|---|---|---|
| 330190 | Base Model | 3300 XL Extended Temperature Range (ETR) Extension Cable |
| -045 | Cable Length Option | 4.5 metres (14.8 feet) |
| -00 | Cable Option | Standard cable, unarmored |
| -00 | Agency Approval Option | Not required |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330190-045-00-00 |
| Brand | Bently Nevada |
| Origin | USA |
| Weight | Approx 0.18 kg |
| Dimensions | 4.5 m cable length (14.8 feet) |
| Operating Temp | -51 deg C to +260 deg C (-60 deg F to +500 deg F) |
| Power Consumption | Passive signal transmission line |
| Cable Type | Standard ETR coaxial cable, unarmored |
| System Compatibility | 3300 XL 8 mm Proximity Transducer System |
| Impedance | 75 ohm nominal triaxial cable construction |
| Agency Approval | Not required (Option 00) |
Mechanical Monitoring & Eddy-Current Transducer Performance
The 330190-045-00-00 extended temperature range extension cable maintains tight physical and electrical tolerances to ensure correct eddy-current probe scaling across wide operating temperature gradients. Field verification requires gap voltage validation (-10 VDC targets) measured across the Proximitor output terminals to establish the mechanical center point of the target shaft. The continuous shielded cable design ensures cross-talk suppression and isolates small differential voltage shifts from rotor dynamics and high-frequency noise generated by neighboring machinery circuits.
Frequently Asked Questions
Q: How does the electrical length of a 4.5 metre extension cable integrate into standard transducer calibrations?
A: Combining a 4.5 metre extension cable with a 0.5 metre proximity probe head creates a 5.0 metre total electrical system length, matching the input calibration parameters of 5.0 metre Proximitor units without requiring signal conditioning adjustments.
Q: What physical precautions are necessary when mating miniature coaxial ClickLoc connectors?
A: Connectors must be kept clean, dry, and free of metallic debris. ClickLoc connectors should be hand-tightened until positive mechanical engagement is felt to prevent connection drift caused by machine casing vibration.
Field Installation Guidelines
- Verify that the combined length of the connected probe and extension cable matches the total electrical system length stated on the Proximitor label.
- Route the extension cable through dedicated, grounded metallic conduit or wireways separated from AC motor leads to block external electromagnetic noise.
- Observe a minimum static bend radius of 25.4 mm (1.0 in) for unarmored coaxial cable runs to prevent internal conductor fatigue or dielectric breakdown.
- Apply protective silicone connector boots or junction boxes around cable connection points exposed to high oil splash or atmospheric condensation.
- Secure the cable run using non-conductive mounting clamps at regular intervals to minimize mechanically induced vibration stress on cable termination points.
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