Bently Nevada 21747-085-00 7200 Series Extension Cable

Description

The 21747-085-00 is an 8.5 m (27.9 ft) extension cable for the Bently Nevada 7200 Series proximity transducer system. Designed to link the 7200 Series proximity probe with the 7200 Series Proximitor sensor, this cable ensures signal integrity across the transducer chain. The 085 option designates an 8.5 m total cable length, while the 00 option indicates a standard cable construction without stainless steel armor, suitable for environments where physical abrasion protection is not required.

This extension cable is an integral part of the 7200 Series displacement monitoring solution, which operates on the eddy-current principle to measure static and dynamic distances. By maintaining the system's characteristic impedance, it allows for accurate measurement of shaft radial vibration, axial thrust position, and rotor eccentricity in rotating machinery such as turbines, compressors, and pumps.

Features

• Total Cable Length: 8.5 m (Option 085)
• Cable Armor: Unarmored (Option 00)
• System Compatibility: Fully compatible with Bently Nevada 7200 Series 5 mm and 8 mm Proximitor sensors
• Operating Temperature: -34 degC to +177 degC (-30 degF to +350 degF)
• Application: Provides reliable signal transmission for shaft vibration and position monitoring

Applications

• Radial vibration measurement for bearing condition monitoring
• Axial thrust position measurement to detect bearing wear
• Shaft average radial position for rotor stability analysis
• Vibration amplitude and phase angle measurement for diagnostic plotting
• Eccentricity measurement to monitor rotor bow

Ordering Information

Technical Specifications

Installation Guidelines

• Ensure that all connections are tight and that the cable is routed to prevent strain at the connector points.
• Maintain the required separation between transducer signal wiring and high-voltage AC power lines to minimize electromagnetic interference.
• When using the extension cable, ensure the total system length (probe integral lead + extension cable) matches the calibrated length for the specific Proximitor sensor.
• Avoid excessive bending of the coaxial cable to prevent damage to the internal conductors.

Compliance and Certifications

Bently Nevada 7200 Series transducers are designed for use in harsh industrial environments. Specific system components carry certifications from agencies such as CSA, FM, and BASEEFA for use in hazardous locations. Consult the specific Proximitor datasheet for the complete hazardous area approval ratings applicable to the transducer chain.