330190-075-01-CN | Bently Nevada 7.5m Armored ETR Extension Cable

Product Overview

When machinery operates in extreme heat, standard cables can fail, leading to costly downtime and unreliable vibration data. The Bently Nevada 330190-075-01-CN solves this problem. As a 3300 XL Extended Temperature Range (ETR) extension cable, it maintains signal integrity in environments where conventional cables cannot survive. This 7.5-meter (24.6 feet) armored cable connects your 3300 XL Proximitor sensor to the monitor, delivering accurate measurements even under thermal stress.

Part of the trusted 3300 XL family, this cable is designed for continuous operation in harsh industrial settings. The armored option (01) provides extra mechanical protection, making it suitable for installations where physical damage is a risk. With country-specific approval (CN), it meets regulatory requirements for your region.

Technical Specifications

Every specification below comes directly from the manufacturer's data. These values define the cable's performance and installation limits.

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

Cable Type: Armored (option 01)

Center Conductor Resistance (RCORE): 1.65 ± 0.25 Ω

Outer Conductor Resistance (RJACKET): 0.49 ± 0.10 Ω

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

Temperature Range (ETR cable): -52°C to +260°C (-62°F to +500°F) operating and storage

Minimum 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)

Weight (armored): 103 g/m (1.5 oz/ft)

These parameters ensure consistent signal transmission over the full cable length. The low capacitance minimizes signal loss, while the gold-plated connectors resist corrosion for reliable contact.

Industry Applications

The 330190-075-01-CN excels in applications where high temperatures are the norm. Consider these scenarios:

Turbine Monitoring: Gas and steam turbines generate intense heat around bearing housings. This ETR cable withstands up to 260°C, ensuring uninterrupted vibration monitoring in these zones.

Compressor Packages: In oil and gas compression trains, ambient temperatures can soar. The armored jacket protects against abrasion and impact, while the high-temperature rating prevents cable degradation.

Paper Mill Rollers: Drying sections of paper machines operate at elevated temperatures. The 330190-075-01-CN delivers reliable data, reducing unplanned shutdowns.

In each case, the cable's extended temperature range directly addresses the pain point of premature cable failure, saving replacement costs and production losses.

Installation & Setup Guidance

Proper installation is critical for accurate readings. Follow these guidelines based on the manufacturer's specifications:

Bend Radius: Never bend the cable tighter than 25.4 mm (1.0 in). Exceeding this limit can damage the internal conductors.

Connector Torque: Tighten connectors to a maximum of 0.565 N•m (5 in•lbf). Over-tightening can strip threads or deform contacts.

Field Wiring: Use 0.2 to 1.5 mm² (16 to 24 AWG) wire. A 3-conductor shielded triad cable with tinned wiring is recommended. Keep the distance between the Proximitor sensor and monitor within 305 meters (1,000 feet) to avoid signal rolloff.

Routing: Avoid sharp edges and abrasive surfaces. The armored jacket helps, but physical protection is still advisable.

Always verify that the cable is not subjected to tension or twisting during installation. Secure it with appropriate clamps, leaving some slack for thermal expansion.

Maintenance & Reliability

Regular inspection of the extension cable is a low-cost practice that prevents unexpected failures. Check the cable jacket for cuts, abrasions, or chemical damage. Examine connectors for signs of corrosion or looseness. Re-torque if necessary, but never exceed the maximum specified torque.

Because this cable is rated for high temperatures, it is less likely to degrade in hot environments, but periodic visual checks are still recommended. The gold-plated connectors resist oxidation, extending service life. By catching minor issues early, you avoid costly downtime and maintain measurement accuracy.

For safety-rated applications, note that this cable is certified for functional safety up to SIL 2 (HFT=0) and SIL 3 (HFT=1) per the provided data. Always follow the system's safety manual for inspection intervals and replacement criteria.

Compatibility & Integration

The 330190-075-01-CN is designed for use with Bently Nevada 3300 XL 8 mm proximity probe systems. It is electrically and physically interchangeable with non-XL 3300 5 mm and 8 mm components, provided the minimum bend radius is observed. This flexibility simplifies upgrades and replacements in existing installations.

Ensure your monitor and Proximitor sensor are compatible with the cable's impedance and capacitance characteristics. The cable's low capacitance (69.9 pF/m) supports long runs without significant signal degradation.

Selection Guide & Purchasing Advice

Before ordering, verify your system requirements. Confirm the cable length needed (this model is 7.5 meters). Check the temperature range of your application – the ETR version handles up to 260°C, while a standard cable is limited to 177°C. If your environment has physical hazards, the armored option is essential.

At BluePLC Industrial, we stock the Bently Nevada 330190-075-01-CN and can advise on compatibility with your existing 3300 XL system. Contact us to confirm availability and lead times. We also offer guidance on spare parts inventory to minimize downtime.

For complete technical specifications, please contact BluePLC Industrial.