Configured for signal transmission in mechanical monitoring systems, the Bently Nevada 330930-040-02-00 (330930-040-02-00 Extension Cable) provides direct physical and electrical execution for NSv proximity transducer systems.

Model Suffix Configuration

• 330930: Base Model (3300 NSv Extension Cable)
• 040: Cable Length (4.0 meters)
• 02: Connector and Cable Option (Stainless steel armor, without FEP jacket)
• 00: Agency Approval (Not Required)

Hardware Technical Specifications

Eddy-Current Transducer Performance

The 330930-040-02-00 is designed to maintain the integrity of the eddy-current probe scaling within the 3300 NSv system. Signal attenuation is strictly controlled to ensure that the Proximitor sensor output maintains accurate gap voltage validation against -10 VDC targets. The cable maintains consistent impedance characteristics to facilitate precise rotor dynamics monitoring, minimizing signal degradation that could otherwise lead to erroneous vibration data or false-positive alarms in high-speed machinery applications.

Ordering Information

• 1 x 330930-040-02-00 Extension Cable
• 1 x Protective Connector Cap (Installed)

Field Installation Procedures

• Connector Torque: Tighten connectors to the manufacturer-specified torque to ensure mechanical stability and electrical contact. Avoid overtightening.
• Routing: Install within industrial conduit or cable trays. Ensure the stainless steel armor is not compromised by excessive bending during the routing process.
• Grounding: Maintain signal shield continuity through the extension cable to the Proximitor sensor to ensure effective noise rejection.
• Separation: Route cabling away from high-current power cables or variable frequency drive (VFD) outputs to prevent electromagnetic coupling.

Frequently Asked Questions

• Can this cable be used with non-NSv probes?

  No, the 3300 NSv series has specific electrical characteristics matched only to NSv probes and sensors. Mixing components will result in inaccurate measurement.

• What is the impact of the stainless steel armor?

  The armor provides physical protection against mechanical damage and abrasion in harsh environments without affecting the electrical signal path.

• Is the length factory-calibrated?

  Yes, the 3300 NSv system is calibrated for specific total lengths. Adding or removing cable segments without recalibration will invalidate the system output.

• What is the role of the FEP jacket?

  The FEP jacket provides chemical resistance. This specific model (-02) lacks the FEP jacket, making it suitable for applications where chemical exposure is not a concern.

• How is the shield handled?

  The shield is integrated into the coaxial construction and must be properly connected to the monitor/proximitor shield terminal to maintain ground reference.

• Can the cable withstand high temperatures?

  The cable is rated for operation up to 177 deg C, making it suitable for high-temperature machine housing environments.

• What causes gap voltage instability?

  Instability is typically caused by loose connectors, cable damage, or poor shield grounding. Verify all mechanical connections if the voltage drifts.

• Does this cable require periodic testing?

  Perform periodic continuity and insulation resistance tests to ensure the cable dielectric remains intact and no oxidation is present on the connectors.