330190-075-00-CN | Bently Nevada 7.5m ETR Extension Cable

Product Overview

The Bently Nevada 330190-075-00-CN is a 3300 XL Extended Temperature Range (ETR) extension cable, precisely engineered for reliable signal transmission in demanding industrial environments. This 7.5-meter (24.6 feet) standard cable is part of the trusted 3300 XL series, designed to connect proximity transducers to monitoring systems with exceptional accuracy. With its extended temperature rating and robust construction, this cable ensures dependable performance even in extreme conditions, making it a critical component for machinery protection and condition monitoring.

Technical Specifications

Key parameters of the 330190-075-00-CN include:

Cable Length: 7.5 meters (24.6 feet) – option 075

Cable Option: 00 – Standard cable

Agency Approval: CN Country Specific

Extension Cable DC Resistance (RCORE): 1.65 ± 0.25 Ω (center conductor to center conductor)

Extension Cable DC Resistance (RJACKET): 0.49 ± 0.10 Ω (outer conductor to outer conductor)

Extension Cable Capacitance: 69.9 pF/m (21.3 pF/ft) typical

Field Wiring: 0.2 to 1.5 mm² (16 to 24 AWG), recommended 3-conductor shielded triad, tinned field wiring; maximum length 305 meters (1,000 feet) between sensor and monitor

Linear Range: 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from target, extending to 2.3 mm (90 mils) (approximately –1 to –17 Vdc)

Recommended Gap Setting for Radial Vibration: -9 Vdc [approximately 1.27 mm (50 mils)]

Extension Cable Material: Standard cable – 75 Ω triaxial, fluoroethylene propylene (FEP) insulated; ETR cable – 75 Ω triaxial, perfluoroalkoxy (PFA) insulated

Minimum Cable Bend Radius: 25.4 mm (1.0 in)

Connector Material: Gold-plated brass or gold-plated beryllium copper

Maximum Connector Torque: 0.565 N•m (5 in•lbf)

Extension Cable Weight: 34 g/m (0.4 oz/ft); armored version 103 g/m (1.5 oz/ft)

Operating and Storage Temperature: Standard cable –52°C to +177°C (-62°F to +350°F); ETR cable –52°C to +260°C (-62°F to +500°F)

These specifications ensure precise signal integrity and durability, making the 330190-075-00-CN a reliable choice for high-vibration and high-temperature applications.

Industry Applications

The 330190-075-00-CN excels in industries where machinery operates under extreme temperatures and vibration, such as:

Power Generation: Turbines, generators, and auxiliary equipment require accurate vibration monitoring to prevent catastrophic failures. The ETR cable's extended temperature range ensures reliable operation near hot surfaces.

Oil & Gas: Compressors, pumps, and motors in refineries and processing plants benefit from the cable's robust construction and resistance to harsh environments.

Manufacturing: High-speed rotating machinery in steel, paper, and cement plants rely on consistent signal transmission for condition monitoring and predictive maintenance.

By maintaining signal fidelity over long distances and in extreme conditions, this cable reduces downtime and improves asset reliability.

Installation & Setup Guidance

Proper installation is crucial for optimal performance. Follow these guidelines:

Observe the minimum cable bend radius of 25.4 mm (1.0 in) to prevent damage to the internal conductors.

Use the recommended field wiring: 0.2 to 1.5 mm² (16 to 24 AWG) three-conductor shielded triad with tinned wires. Keep the total length between the sensor and monitor under 305 meters (1,000 feet) to avoid signal rolloff.

Apply the maximum connector torque of 0.565 N•m (5 in•lbf) to ensure a secure connection without over-tightening.

Set the radial vibration gap to -9 Vdc (approximately 1.27 mm or 50 mils) for accurate measurement.

Adhering to these steps ensures reliable, long-term operation.

Maintenance & Reliability

The 330190-075-00-CN is designed for minimal maintenance. Its gold-plated connectors resist corrosion, and the FEP/PFA insulation withstands high temperatures without degradation. Regularly inspect the cable for physical damage, especially at bend points, and verify connector integrity. The cable's robust construction minimizes signal drift, reducing the need for recalibration. This reliability translates to lower total cost of ownership and fewer unscheduled outages.

Compatibility & Integration

This extension cable is fully compatible with the Bently Nevada 3300 XL 8 mm sensor systems. It is electrically and physically interchangeable with non-XL 3300 5 mm and 8 mm components, provided the minimum bend radius is respected. The cable works seamlessly with 3300 XL Proximitor sensors and monitors, ensuring accurate vibration data for your protection system.

Selection Guide & Purchasing Advice

When selecting the 330190-075-00-CN, verify your system's cable length requirements and temperature demands. This model is ideal for extended temperature ranges up to +260°C (+500°F) in the ETR version. Confirm the agency approval option (CN) matches your regional requirements. For current availability and lifecycle status, contact BluePLC Industrial. Our team can assist with compatibility checks and provide competitive pricing for this genuine Bently Nevada part.

For complete technical specifications for the 330190-075-00-CN, please contact BluePLC Industrial.