330190-045-01-00 Bently Nevada 3300 XL ETR Extension Cable (4.5m Armored)

Product Overview

The 330190-045-01-00 serves as a critical link in the Bently Nevada 3300 XL Proximitor Sensor System. Engineered specifically for Extended Temperature Range (ETR) environments, this extension cable maintains signal integrity where standard cables fail. It facilitates high-precision, non-contact measurements of vibration and axial position in large-scale rotating machinery, including steam turbines, centrifugal compressors, and industrial pumps.

By utilizing advanced fluoropolymer insulation and a robust mechanical design, this cable ensures the eddy current signal travels from the probe to the Proximitor with minimal attenuation. Its presence within a Machinery Protection System (MPS) guarantees that operators receive real-time, laboratory-grade data to prevent catastrophic equipment failure and optimize maintenance schedules.

Technical Configuration

The model number 330190-045-01-00 follows a specific alphanumeric logic that defines its physical and mechanical properties:

330190 - Product Series

This designates the 3300 XL Extended Temperature Range (ETR) Extension Cable. It is fully compatible with 3300 XL 8mm probes and Proximitor sensors.

045 - Cable Length Option

This suffix specifies a total length of 4.5 meters (14.8 feet). System accuracy depends on maintaining a total length (probe + extension cable) of either 5.0 or 9.0 meters; this 4.5m cable typically pairs with a 0.5m probe to reach a 5-meter system balance.

01 - Cable Option

The "01" designation confirms this is an Armored Cable. The stainless steel TFE-jacketed armor provides superior crush resistance and protects the internal coaxial core from mechanical damage in harsh industrial pathways.

00 - Agency Approval Option

This indicates that No Specific Agency Approvals (such as ATEX/IECEx) are required for this particular unit, making it ideal for general-purpose industrial applications.

Technical Specifications

Installation Guide

Proper installation ensures the longevity of the vibration monitoring loop. Follow these engineering best practices:

Connector Protection

Always use connector protectors or heat-shrink tubing to seal the connection between the probe and the extension cable. Moisture ingress at the connector junction is the leading cause of "glitch" or signal drift in eddy current systems.

Minimum Bend Radius

Avoid sharp kinks. While the armored casing provides protection, exceeding the 25.4 mm (1.0 inch) bend radius can damage the internal coaxial dielectric, leading to impedance mismatch and calibration errors.

Signal Calibration (Gap Voltage)

After connecting the 330190-045-01-00 to the probe and Proximitor, verify the DC Gap Voltage. For a standard 3300 XL 8mm system, a voltage of approximately -10 VDC typically represents the center of the linear range (approx. 1.27 mm or 50 mils gap).

Routing Precautions

Isolate the extension cable from high-voltage conduits. Use dedicated grounded metal trays to prevent Electromagnetic Interference (EMI) from distorting the vibration waveform.

Engineering Advantages

The 330190-045-01-00 thrives where standard PVC or FEP cables degrade. Its ETR rating allows for continuous operation near turbine casings and exhaust hoods where temperatures frequently exceed 150°C.

• Seamless TSI Integration: This cable integrates perfectly with Bently Nevada 3500 and 2300 Vibration Monitoring racks, ensuring the transducer system maintains its 7.87 V/mm (200 mV/mil) sensitivity.

• Mechanical Resilience: The 304 stainless steel armor eliminates the need for external conduit in many applications, reducing installation costs while protecting against abrasive dust and accidental impact.

• Thermal Stability: Advanced insulation materials prevent capacitance changes during temperature fluctuations, ensuring the vibration data remains accurate from cold start-up to peak operating load.

Technical FAQs

Q1: Can I use this 4.5m cable with a 1.0m probe in a 5-meter system?

A1: No. A 5-meter system requires a total length of 5.0 meters. Since this cable is 4.5 meters, it must be paired with a 0.5-meter probe. Pairing it with a 1.0-meter probe would create a 5.5-meter mismatch, causing significant calibration errors in the Proximitor output.

Q2: What is the benefit of the "ETR" version over the standard 3300 XL cable?

A2: The ETR (Extended Temperature Range) version uses specialized dielectric materials that withstand up to 260°C. Standard cables are typically rated for lower thresholds. Use the ETR version for sensors located near steam paths or high-heat zones.

Q3: Does the armored option (01) affect the electrical performance?

A3: No. The armor is a mechanical layer. The internal electrical characteristics remain consistent with the 3300 XL standard, providing the same impedance and frequency response required for high-accuracy vibration monitoring.

Q4: Is this cable backward compatible with the older 3300 8mm (non-XL) systems?

A4: While physically compatible in many cases, Bently Nevada recommends using 3300 XL components together to ensure the system meets the published API 670 standards for linearity and accuracy. Mixing XL and non-XL components may result in a non-linear scale factor.