Description
Key Technical Specifications
- Product Model: 330130-040-00-00
- Manufacturer: Bently Nevada
- Cable Length: 4.0 meters (13.1 feet)
- Cable Type: Standard Non-armored Triaxial Cable
- Impedance: 75 Ohms
- Insulation Material: Fluorinated Ethylene Propylene (FEP) / PFA
- Capacitance: ~69.9 pF/m (21.3 pF/ft)
- Operating Temp Range: -40°C to +85°C
- System Compatibility: 3300 XL 8mm Probes & Preamplifiers (e.g., 330180 series)
- Industry Standard: API 670 Compliant
Product Introduction
When setting up a machinery protection system, the extension cable is often treated as an afterthought, but it is actually the critical link in your signal chain. The Bently Nevada 330130-040-00-00 is a 4-meter standard triaxial extension cable designed to carry the delicate high-frequency signals from your 8mm eddy current probe to the preamplifier without picking up EMI noise.
I’ve wired up countless compressor skids with this exact 4-meter length, and it usually hits the sweet spot for reaching from the bearing housing to the local junction box without leaving excess cable coiled up. The 75Ω triaxial design is mandatory for maintaining signal integrity. Just be aware that the “-00” designation means this is a standard, non-armored cable. If you’re routing it through an area where maintenance crews are constantly dropping wrenches, you might want to step up to an armored variant.
Quality SOP & Tech Pitfalls (The Reality Check)
The Lab Report (SOP)
Triaxial cables aren’t just wires; they are precision transmission lines. Before shipping, we perform a visual inspection to ensure the ClickLoc connectors aren’t bent and the outer jacket is free of nicks. We then use a network analyzer to verify the 75Ω impedance and check for any internal shorts or open circuits. Finally, we pack it securely with a printed test report.
The Engineer’s Warning (Pitfalls)
Never, ever cut or splice this cable to make it fit. The 3300 XL system is calibrated for a specific total loop length. Changing the cable length alters the capacitance and will completely corrupt your vibration readings. I’ve seen a tech try to “save” a short cable by splicing in an extra 2 meters of generic coax, and the resulting noise floor made the entire monitoring system useless. Also, respect the bend radius. Kinking this cable breaks the internal triaxial shielding.
Installation & Configuration Guide
- Pre-Installation: ⚠️ CRITICAL: Ensure the machine is locked out and the preamplifier is powered down. Verify you have the exact 4-meter length required for your routing path.
- Removal: Disconnect the ClickLoc connector from the probe and the BNC connector from the preamplifier. Carefully pull the old cable through the conduit or cable tray, avoiding snags.
- Installation: Route the new 330130-040-00-00 cable, ensuring it doesn’t pinch or bend tighter than a 50mm radius. Connect the ClickLoc end to the probe first, then the BNC end to the preamplifier. Ensure both connections click/lock securely to prevent vibration-induced disconnects.
- Power-On & Testing: Power up the preamplifier. Check the DC gap voltage to ensure it falls within the normal operating range (-9V to -11V DC). Verify that the System 1 software is reading stable, noise-free dynamic vibration data.
Bently Nevada 330130-040-00-00
Compatible Replacement Models
| Replacement Model | Compatibility Tier | Field Notes |
|---|---|---|
| 330130-040-00-00 | ✅ Drop-in Replacement | Exact same model. Direct swap. |
| 330130-040-00-05 | ⚠️ Software Compatible | Includes multi-approval certifications. Electrically identical, but verify site-specific compliance requirements. |
| 330130-040-01-00 | ❌ Hardware Mod Required | This is an ARMORED cable. It will connect, but the added stiffness requires careful routing to avoid stressing the probe. |
Frequently Asked Questions (FAQ)
Can I combine a 4m probe cable and a 4m extension cable?
No. The 3300 XL 8mm system requires the probe cable plus the extension cable to equal a specific total length (usually 4m, 5m, 8m, or 9m). Adding a 4m extension to a probe that already has a 4m cable will result in an 8m system, which requires an 8m preamplifier. Check your preamp specs.
What does the “-00” in the middle of the part number mean?
The “-00” designates a standard, non-armored cable with no connector protector. If it were “-01”, it would be armored, and “-02” would include a connector protector.
Is this cable compatible with older 3300 non-XL systems?
Yes, the 3300 XL 8mm extension cables are backward compatible with older 3300 8mm probes and preamplifiers. However, always verify the total system length matches the preamplifier’s calibration.
How do I know if this extension cable is failing?
Erratic vibration readings, high noise floors, or intermittent “Sensor Fault” alarms are classic signs. If you’ve swapped the probe and preamp and the issue persists, the cable likely has a broken shield or internal short.
Does the operating temperature matter for the cable?
Yes. This standard FEP-insulated cable is rated up to +85°C. If you are running it near a hot exhaust manifold or steam line, the insulation will melt. Use high-temperature or armored variants for extreme heat.
How long is the warranty?
We provide a 1-year warranty. If the cable fails due to manufacturing defects, we replace it. Damage from crushing, kinking, or chemical exposure is not covered.
