The Bently Nevada 84661-33 is a high-performance, armored interconnect cable designed to maintain signal integrity for critical machinery protection systems. Engineered for durability in harsh industrial environments, this cable is specifically optimized for connecting Velomitor piezoelectric velocity sensors to monitoring systems, such as the Bently Nevada 3500 series rack.

Features

• Stainless Steel Armor: Provides a robust physical shield against mechanical impact, abrasion, and foot traffic.
• Twisted Shielded Pair: Minimizes electromagnetic interference (EMI) to ensure clean, low-noise vibration data transmission.
• Hermetically Sealed Connectors: Protects against moisture and environmental contaminants.
• FEP Insulation: Offers superior resistance to extreme temperatures and chemical exposure, including industrial lubricants and oils.
• Flexible Routing: Designed for ease of installation in complex machinery layouts.

Applications

• Power Generation: Monitoring casing and strut vibration on gas and steam turbines.
• Process Industry: Vibration data acquisition for centrifugal and reciprocating compressors.
• Pumping Systems: Absolute bearing vibration monitoring for boiler feed and hot oil pumps.
• Industrial Fans: Suitable for ID/FD and cooling tower fans operating in corrosive or outdoor environments.

Technical Specifications

Installation Guidelines

• Bend Radius: Maintain a minimum static bend radius of 51 mm (2.0 in). For handling and installation, use a larger radius (up to 15x cable diameter) to prevent internal copper fatigue.
• Routing: Whenever possible, route the cable through dedicated conduits to provide additional protection against physical damage and to further reduce EMI from high-voltage power lines.
• Handling: Ensure the system is powered down before connecting or disconnecting the sensor cable to prevent electrical transients.

FAQ

What is the length of the 84661-33 cable?

The cable has a nominal length of 33 feet (10.06 meters).

What sensors is this cable compatible with?

This cable is primarily designed for use with Bently Nevada Velomitor sensors, including the 330750 and 330752 High-Temperature Velomitor models.

What is the primary purpose of the armor?

The stainless steel overbraid acts as a physical barrier to protect the internal signal conductors from accidental impact, crushing, and environmental wear in industrial settings.