330130-040-02-00 Bently Nevada 3300 XL Proximity Cable

Product Overview

The 330130-040-02-00 is an industrial-grade, high-frequency coaxial extension cable engineered by Bently Nevada for the 3300 XL 8 mm proximity transducer platform. This 75 Ohm impedance-matched link transmits RF signal metrics between the eddy current proximity probe head and the central Proximitor sensor unit. It features an integrated connector protector designed to maintain signal shielding over continuous duty cycles.

Engineered with a low-loss design, the 330130-040-02-00 provides stable capacitance tracking to eliminate signal attenuation across the measurement loop. The assembly is wrapped in high-temperature Fluoroethylene Propylene (FEP) insulation, offering structural resilience against chemical exposure, severe industrial humidity, and ambient thermal fluctuations inside harsh machinery environments.

Configuration Breakdown

The alphanumeric selection code for the 330130-040-02-00 cable assembly is systematically decoded below:

• 330130 (Base Model): 3300 XL Extension Cable, standard 75 Ohm coaxial architecture
• └─ 040 (Cable Length Option): 4.0 meters (11.5 feet) total calibrated length
• └─ 02 (Connector Protector Option): Standard cable layout including factory-installed connector protector
• └─ 00 (Agency Approval Option): No regional hazardous area agency approvals required

Technical Specifications

• Brand: Bently Nevada (Baker Hughes)
• Model Coding: 330130-040-02-00
• Product Series: 3300 XL Proximity Transducer System
• Physical Cable Length: 4.0 meters (11.5 feet)
• Net Weight Matrix: Standard unarmored configuration at 34 g/m (0.204 kg total mass)
• Center Conductor DC Resistance (RCORE): 0.88 ± 0.13 Ohms across the 4.0m length
• Outer Shield DC Resistance (RJACKET): 0.26 ± 0.05 Ohms terminal-to-terminal
• Characteristic Extension Capacitance: 69.9 pF/m (21.3 pF/ft) typical signal capacity
• Matched System Output Impedance: 50 Ohms
• Total Dynamic Linear Range: 2.0 mm (80 mils) when integrated into a calibrated 3300 XL loop
• Standard System Calibration Reference: Optimized exclusively for AISI 4140 steel targets
• Environmental Protection Threshold: Less than 3% Average Scale Factor (ASF) variance under 93% relative humidity per IEC 68-2-3

Target Equipment & Field Application Scenarios

The 330130-040-02-00 extension cable bridges sensor lines inside heavy critical machinery. It links 8 mm proximity probes to asset protection monitors on high-capacity gas turbines, boiler feed pumps, steam-driven turbogenerators, and hyper-compressors. It routes high-frequency signals out of the bearing oil sumps into external terminal blocks to provide continuous shaft vibration and thrust position tracking.

Loop Diagnostics & Electrical Verification

Instrumentation teams can troubleshoot the 330130-040-02-00 using point-to-point resistance mapping. Disconnect both ends and measure the core conductor loop; a healthy cable must read 0.88 ± 0.13 Ohms. Measuring the jacket shield loop must yield 0.26 ± 0.05 Ohms. A high resistance reading identifies physical cable pinching or an over-extended bend radius, while low insulation resistance across the core and shield reveals terminal moisture or oil ingress at the coaxial junction.

Logistics, Storage & Warranty Terms

• Inventory Placement: Factory brand new and original units kept in original protective packing
• Express Freight Transport: Expedited international shipping via premium networks (DHL, FedEx, UPS)
• Fulfillment Window: Securely packaged and dispatched within 24 to 48 hours from order validation
• Warranty Safeguard: Supported by an authentic 12-month structural operational warranty
• Installation Package Note: Includes standard silicone sealing tape for supplementary connector isolation

Global PLC Spare HUB's Insight

The 330130-040-02-00 cable features a ruggedized mechanical design. Bently Nevada's integrated connector protector (Option 02) wraps around the coaxial mating junction to isolate the connection from grounding against structural metal conduits. While the cable package includes supplemental silicone self-fusing tape, we advise against using tape alone if the junction is exposed to hot turbine oil. Over time, synthetic lubricants can soften adhesive layers, leading to phase shifts and signal drift. For these environments, the rigid connector protector provides much more reliable long-term insulation.

Selection & Model Comparison

To avoid critical calibration errors, the total length of your probe and extension cable must match the required configuration of your Proximitor sensor (typically 5.0-meter or 9.0-meter matching setups). Review the structural options below:

• Target Unit: 330130-040-02-00 — This cable provides a 4.0-meter physical span paired with an unarmored outer jacket and a built-in mechanical connector protector, configured for uncertified or general-purpose electrical architectures (Option 00).
• Alternative Unit: 330130-045-00-05 — Provides a longer 4.5-meter physical span without an integrated connector protector, but includes multi-agency hazardous area approvals (ATEX/IECEx Option 05).

Technical Procurement Advice

Do not substitute a 4.0-meter cable for a 4.5-meter cable without changing the probe configuration. The 3300 XL Proximitor sensor calibrates its output based on the total electrical length of the loop. Mixing a 4.0-meter extension cable with a probe tuned for a 4.5-meter line will cause severe Average Scale Factor (ASF) errors. This calibration mismatch will distort your vibration measurements in TSI control systems. Additionally, ensure your hazardous area zone codes match: do not install the uncertified "00" option into environments requiring "05" intrinsically safe parameters.

Frequently Asked Questions

Why does altering the total length of the extension cable disrupt the Proximitor calibration loop?

The Proximitor calculates distance based on the total RF tuning across the probe coil and cable. Changing the extension length alters the loop's total capacitance and impedance, which shifts the millivolt-per-mil scale factor and invalidates your calibration curves.

Can the silicone tape included with the cable be used inside an active steam turbine bearing casing?

No, silicone tape degrades when exposed to continuous hot synthetic turbine oils. For inside-the-casing installations, use a physical connector protector or an oil-resistant FluidLoc cable variant to prevent fluid tracking.

What failure mode occurs if the internal core resistance climbs above the 0.88 Ohms parameter?

High core resistance dampens the high-frequency RF signal. This attenuation limits the linear range of the loop and can trigger false proximity alarms or cause zero-point tracking drift on your monitoring rack.

Is this standard unarmored extension cable suitable for direct installation across open floor layouts?

No, unarmored FEP cables lack structural protection against impact or shearing. You must route unarmored lines inside heavy metal conduits or choose an armored variant to shield the conductors from mechanical damage.

How do you test the cable for an intermittent grounding fault caused by machine vibration?

Connect a digital insulation tester between the outer shield and the machine frame, then gently flex the cable line. A reading below 50 Megohms reveals a breach in the outer FEP jacket that is allowing the shield to ground out intermittently.

Procurement & Selection Guidance

Always inspect the color-coded bands on your existing extension cable before ordering a replacement. The 3300 XL family uses specific color markers to distinguish standard cables from extended temperature or different length variations. When replacing a cable on critical turbo-machinery, ensure the target shaft material matches the standard AISI 4140 steel calibration profile. If your machinery uses alternative stainless steel or specialized chrome alloys, contact our technical team to specify a custom-calibrated Proximitor sensor configuration.

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