Product Core Brief

• Model: 330930-045-00-CN
• Brand: Bently Nevada
• Series: 3300 XL NSv
• Core Function: Serves as the intermediate connection between the 3300 XL proximity probe and the proximitors/transmitters, completing the eddy-current sensor system.
• Product Type: Extension Cable
• Key Specs: 4.5 Meter Length | ClickLoc Connector | 200 mV/mil Compatibility
• Condition: New Surplus / Original OEM

Key Technical Specifications

• Manufacturer: Bently Nevada
• Part Number: 330930-045-00-CN
• Product Category: 3300 XL NSv Extension Cable
• Cable Length: 4.5 Meters (14.8 ft)
• Connector Type: ClickLoc (Probe End) to Standard (Proximitors End)
• System Compatibility: 3300 XL 8mm / 11mm Proximity Probes
• Sensitivity: 7.87 mV/µm (200 mV/mil)
• Operating Temp Range: -40°C to +177°C
• Compliance: API 670 / CSA / ATEX / IECEx

Product Introduction (No Fluff)

The 330930-045-00-CN is a critical component in the Bently Nevada 3300 XL NSv sensor system, bridging the physical gap between the reverse-mount or standard proximity probe and the signal-conditioning proximitors (e.g., 330980) or transmitters (e.g., 990/991).

Because eddy-current systems rely on precise electrical impedance, using the correct OEM extension cable ensures that the total system length (Probe + Extension) matches the proximitors’ calibration. Sourcing this exact part prevents signal degradation, false alarms, and non-linear vibration readings caused by degraded internal conductors or damaged ClickLoc connectors.

QA & Testing SOP (Dynamic & Transparent)

Extension cables are the most frequent point of failure in vibration monitoring. Every 330930-045-00-CN undergoes a strict validation process:

1. Anti-Counterfeit Inspection: Verify Bently Nevada laser etching, cable jacket printing, and connector build quality against OEM baselines.
2. Continuity & Shield Test: Verify all three conductors (signal, return, shield) have zero open circuits and that the shield provides full isolation.
3. ClickLoc Mechanical Check: Inspect the locking mechanism for wear, ensuring it will securely latch to the probe without intermittent signal loss.
4. Impedance Verification: Confirm the cable’s electrical characteristics match the 3300 XL NSv system specifications.
5. Packaging: Shipped in anti-static shielding with a printed QA test report.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ System Length Matching: The 3300 XL NSv system requires a specific total length. The “045” in this part number indicates a 4.5m cable. When combined with the probe’s integrated cable (typically 1m), the total is 5.5m. Do not mix and match lengths unless the proximitors are specifically configured for that exact total length. Mismatched lengths cause severe scaling errors.

❗ ClickLoc Connection Integrity: The probe-end connector uses a ClickLoc mechanism. Push it straight in until you hear/feel a distinct click. A partially seated connector will cause erratic gap voltage and intermittent high-vibration alarms. Never pull the cable by the wire; always grip the connector body.

❗ Environmental Protection: While rated for high temperatures, the cable jacket can be damaged by sharp edges, hot steam pipes, or chemical exposure. Route the cable away from moving parts and secure it with proper clamps. Avoid tight bending radii (minimum 2 inches) to prevent internal conductor breakage.

❗ Grounding Rules: The shield must be grounded at the proximitors/transmitters end only. Never ground the shield at the probe bracket. Grounding at both ends creates a ground loop that injects 50/60 Hz noise directly into your vibration signal.

Replacement Protocol:

1. Pre-Install: Power down the proximitors/transmitter channel. Disconnect the old cable at both ends.
2. Removal: Route the old cable out. Inspect the probe’s ClickLoc port for debris or corrosion. Clean with contact cleaner if necessary.
3. Install: Route the new 330930-045-00-CN cable. Connect to the probe first, ensuring the ClickLoc clicks securely. Route to the proximitors and connect the rear BNC/terminal.
4. Power-on Test: Restore power. Verify the gap voltage settles to the expected midpoint (-10 VDC ± 0.2 VDC for 200 mV/mil systems). Check for zero fault codes.

Technical FAQ

Is this an exact drop-in replacement for my damaged 330930-045-00-CN?
Yes, provided your system uses the 3300 XL NSv 200 mV/mil (7.87 mV/µm) sensitivity. The “-CN” suffix typically denotes a China-manufactured or region-specific variant that is fully interchangeable with standard global versions. Verify your existing cable’s part number matches exactly.

Why is this listed as “New Surplus” instead of factory-new?
This is genuine Bently Nevada stock that was never deployed on a turbine or compressor. It has been stored in climate-controlled inventory rather than exposed to oil mist, vibration, and temperature cycling. You receive the exact same electrical performance and lifespan as a factory-fresh unit, typically at a significantly lower cost and without the 12-week lead time.

Can I hot-swap this extension cable while the proximitors are powered?
Technically yes, but don’t. Disconnecting the cable under power can cause a transient voltage spike that may damage the proximitors’ internal oscillator. It takes 30 seconds to power down the channel. Do it safely to protect your expensive signal conditioner.

What is the warranty coverage on this part?
We provide a standard 12-month functional warranty. If the cable fails open, shorted, or shows intermittent connectivity under normal operating conditions within that window, we replace it. Our QA testing proves the cable passed continuity and impedance tests before it left our bench.

My vibration readings are noisy/unstable. Is this cable bad?
Not necessarily. Before replacing the 330930-045-00-CN, verify the ClickLoc connector is fully seated. Check for cable damage or sharp bends. Noise is often caused by a compromised shield (ground loop), EMI from nearby VFDs, or a failing probe. Only replace the cable if visual inspection and continuity tests confirm an internal fault.