330190-085-01-00 Bently Nevada 8.5m Armored ETR Extension Cable

Problem: Harsh Environments Degrade Standard Extension Cables

Standard extension cables fail in extreme temperatures and mechanical stress. The Bently Nevada 330190-085-01-00 solves this as a 3300 XL Extended Temperature Range (ETR) armored extension cable. It operates from -52°C to +260°C, ensuring signal integrity in the most demanding industrial settings.

Solution: 330190-085-01-00 Engineering-Grade Construction

This cable features 75 Ω triaxial construction with perfluoroalkoxy (PFA) insulation. The armored option adds 103 g/m weight for physical protection. Its gold-plated brass or beryllium copper connectors ensure precise electrical contact. With a minimum bend radius of 25.4 mm, it installs easily in tight spaces.

Key Specifications

• Length: 8.5 m (27.9 ft)
• DC Resistance (RCORE): 1.87 ± 0.28 Ω
• DC Resistance (RJACKET): 0.56 ± 0.11 Ω
• Capacitance: 69.9 pF/m typical
• Temperature Range: -52°C to +260°C
• Connector Torque: 0.565 N·m max
• Compliance: FCC, EMC, RoHS, SIL 2/3

Addressing Signal Degradation with 330190-085-01-00

Signal rolloff at high frequencies is a common pain point. This cable's low capacitance and precise resistance minimize attenuation. The linear range of 2 mm (80 mils) ensures accurate vibration measurement. For radial vibration, set the gap to -9 Vdc (approximately 1.27 mm).

Installation and Compatibility

Use 3-conductor shielded triad cable for field wiring. Maximum length between the Proximitor Sensor and monitor is 305 m (1,000 ft). The 3300 XL 8 mm components are electrically and physically interchangeable with non-XL 3300 5 mm and 8 mm components when observing the minimum bend radius.