Configured for signal path extension in 3300 Monitoring Systems, the Bently Nevada 21747-040-01 (21747-040-01 Extension Cable) provides direct physical/electrical execution for interconnecting proximity probes and Proximitor sensors.

Suffix Identification Matrix

The 21747 series utilizes a modular naming convention to define assembly parameters. In this specific configuration, the "-040" suffix designates a standard length of 4.0 meters, while the "-01" termination suffix indicates the inclusion of protective armor, providing mechanical shielding for the coaxial cable assembly in harsh industrial environments.

Hardware Technical Specifications

Rotor Dynamics and Impedance Validation

System performance depends on the maintenance of calibrated eddy-current probe scaling. This cable is manufactured to match the characteristic impedance requirements of 3300 series proximity transducer systems. During installation, verify that the total electrical length matches the monitor configuration to ensure gap voltage validation (-10 VDC targets) is achieved across the full linear range. Proper routing is required to facilitate cross-talk suppression between adjacent sensor channels, particularly when multiple cables are bundled within the same conduit or tray.

Ordering Information

• 21747-040-01 Extension Cable assembly

• Pre-installed stainless steel armor

• Connector protective end-caps

• Associated technical documentation

Physical Installation Guidelines

• Mechanical Routing: Maintain a minimum bend radius of 65 mm for armored cable variants to avoid fatigue.

• Termination: Ensure connectors are seated flush and tightened finger-tight; do not use locking pliers to avoid stripping threads.

• Grounding: Secure the shield at the Proximitor end only, unless the specific system design requires remote termination to minimize noise.

• Contamination: Keep connector interfaces free of oil, moisture, and debris to prevent resistive leakage paths that degrade signal quality.

• Protection: Ensure armor is secured at both ends using suitable clamps to prevent cable whip or vibration-induced abrasion.

Logistics and Transit

• Delivery time: 2-7 days when payment finish.

• Dispatched via DHL/FEDEX/UPS.

• Components are sealed in anti-static industrial packaging to maintain cleanliness and physical integrity during transit.

Frequently Asked Questions

• Does the armor affect signal propagation? No, the armor is mechanically separated from the coaxial signal path and does not alter electrical parameters.

• Can I shorten this cable? Cutting or modifying the cable length will invalidate the system calibration and introduce measurement errors.

• Is the cable compatible with non-armored variants? Yes, it is electrically interchangeable provided the total system length remains unchanged.

• How is moisture ingress prevented? The connectors feature O-ring seals, which must be inspected for damage before installation.

• Why is the cable rated for 177 deg C? This rating is dictated by the thermal limits of the Teflon dielectric used within the coaxial assembly.

• Can I use this for digital signals? No, this cable is purpose-built for high-frequency analog signals in eddy-current transducer systems.

• What is the risk of excessive bending? Bending beyond the minimum radius risks structural deformation of the inner conductor, leading to signal discontinuity.

• Is the shield continuous through the connector? Yes, the connector shell provides a continuous ground path for the cable shield.