Bently Nevada 84661 Series Velomitor Interconnect Cable in stock

84661 Series Velomitor Interconnect Cable is a high-performance, armored extension cable designed by Bently Nevada specifically for industrial vibration monitoring systems. This series serves as the critical connection component between Velomitor velocity sensors and monitoring systems, ensuring lossless, interference-free transmission of rotating machinery vibration data in harsh industrial environments.

Key Features

All 84661 Series cables are manufactured to the following high-standard specifications:

Feature Specification

Conductor Configuration 2-conductor twisted pair, 22 AWG (0.382 mm² / 0.5 mm²) stranded copper

Shielding Design Dual shielding (foil + braid), excellent EMI/RFI immunity

Armor Protection Stainless steel armored jacket, crush-resistant, abrasion-resistant, cut-resistant

Connector (Sensor End) 2-pin moisture-resistant female connector

Connector (Monitor End) Ring lugs or terminal lugs

Operating Temperature Range -29°C to +121°C (-20°F to +250°F)

Maximum Voltage Rating 300 V AC/DC

Length Range Minimum 3.0 feet (0.9 meters), maximum 96 feet (29 meters)

Detailed Technical Specifications

Signal Integrity: Low capacitance design (≤100 pF/m), impedance 5–10 kΩ, ensuring accurate signal transmission

Minimum Bending Radius: ≥6 × cable diameter

Shock Tolerance: 981 m/s² (100g) peak

Output Bias Voltage: -12 ±1 VDC

Environmental Resistance: Oil-resistant, moisture-resistant, dustproof, suitable for harsh industrial environments

Compatibility & Applications

Compatible Sensors:

9200 Series Seismoprobe Velocity Sensors

330500 XL Seismoprobe Velocity Sensors

Compatible Monitoring Systems:

3500 Series Monitoring Systems (e.g., 3500/42M Module)

1900/65A General Purpose Equipment Monitor

2300/20 Vibration Monitor

Typical Industry Applications:

Oil & Gas (compressors, turbines)

Power Generation (steam turbines, gas turbines, generators)

Petrochemical Plants

Heavy Manufacturing

Aerospace

84661 Series Model List

The following is the complete model list for the 84661 Series Velomitor Interconnect Cables (sorted by length):

Model Length (ft) Length (m) Application Scenario

84661-10 10 ft 3.05 m Short distance, compact installation spaces

84661-12 12 ft 3.66 m Standard short-distance connections

84661-15 15 ft 4.57 m Common standard length, medium distance

84661-16 16 ft 4.88 m Medium distance, provides installation flexibility

84661-17 17 ft 5.18 m Medium distance, common specification

84661-23 23 ft 7.01 m Longer distance connections

84661-25 25 ft 7.62 m Longer distance connections

84661-30 30 ft 9.14 m Long distance or installations requiring obstacle avoidance

84661-33 33 ft 10.06 m Long distance, greater installation flexibility

84661-34 34 ft 10.36 m Long distance connections

84661-60 60 ft 18.29 m Extra-long distance connections

84661-75 75 ft 22.86 m Extra-long distance connections

84661-90 90 ft 27.43 m Very long distance connections

84661-99 99 ft 30.18 m Maximum length connections

84661-NN Custom length Custom Custom order (1-foot increments)

Note: The numeric suffix of the model number represents the cable length in feet. Bently Nevada supports custom ordering in 1.0-foot increments to meet precise installation length requirements.

Selection Guide

How to Choose the Correct Cable Length?

Measure the Distance: Measure the actual wiring path distance from the sensor installation location to the monitor/junction box

Allow for Slack: It is recommended to add 10-15% extra length to accommodate routing adjustments and maintenance needs

Select Standard Models: Prioritize standard lengths listed in the table above (e.g., -15, -17, -25, -30, -33)

Custom Options: For special length requirements, use the 84661-NN model for 1-foot increment custom orders

Installation Precautions

Do not use with the 21128 Velocity Transducer Housing

Ensure the minimum bending radius is not less than 6 times the cable diameter during installation

The cable is armored and designed for fixed installation (not for flexible/frequent moving applications)