Bently Nevada 330130-040-12-CN Extension Cable | 3300 XL

Configured for signal transmission between proximity probes and Proximitor sensors in rotating machinery monitoring, the Bently Nevada 330130-040-12-CN (330130-040-12-CN Extension Cable) provides direct electrical execution for high-frequency vibration signal propagation.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 330130-040-12-CN extension cable is a component of the 3300 XL transducer system, which is factory-calibrated for specific total system lengths to maintain a nominal scale factor of 7.87 V/mm (200 mV/mil). Impedance deviations resulting from cable length mismatches directly influence output signal linearity and the accuracy of rotor dynamics measurements. In multi-channel monitoring architectures, cables must be routed to maintain cross-talk suppression and prevent electromagnetic interference from distorting shaft vibration data processed by the TSI instrumentation.

Frequently Asked Questions

Q: Can the 4.0 metre cable length be field-modified?

A: No. The transducer system is calibrated as a matched assembly, including the probe, extension cable, and Proximitor sensor. Field-modifying the cable length alters the electrical impedance, which invalidates the calibration and induces measurement errors.

Q: What is the purpose of the FluidLoc cable option?

A: The FluidLoc option utilizes a specialized construction to prevent the migration of process fluids along the inside of the cable, providing an additional layer of protection in environments where the cable is exposed to fluid immersion.

Field Installation Guidelines

• Mounting: Secure the cable at regular intervals to prevent mechanical strain on the connectors. Use non-conductive cable ties to avoid creating potential ground loops.
• Grounding: Ensure the cable shield is maintained through the coupling to provide electromagnetic immunity. The shield must not contact the machine housing except at the designated grounding point.
• Connector Integrity: Verify that the connector mechanism is fully seated and locked. The mating surfaces must be clean and free of moisture or oil to prevent signal attenuation.
• Cable Routing: Route the coaxial cable through dedicated metallic conduit, maintaining physical separation from high-voltage AC or motor power cables to minimize induced noise.