Configured for small-clearance rotor position and vibration measurement in rotating machinery, the Bently Nevada 330910-01-08-10-01-05 (330910 Proximity Transducer) provides direct physical and electrical execution of eddy-current signal sensing within the 3300 XL NSv transducer system.

Suffix Breakdown & Configuration

The 330910-01-08-10-01-05 assembly is defined by the following technical parameters:

• 01: Unthreaded length (0 mm).

• 08: Overall case length (80 mm).

• 10: Total length (1.0 meter).

• 01: Connector option (Miniature coaxial).

• 05: Agency approval (Multiple agency compliance).

Hardware Specifications

Rotor Dynamics and Signal Integrity

The 3300 XL NSv system employs optimized eddy-current probe scaling to ensure high-fidelity signal output on small-diameter shafts. The system is factory-calibrated to a sensitivity of 7.87 V/mm (200 mV/mil). Accurate gap voltage validation is required during commissioning; installers must target -10 VDC at the Proximitor output when the probe is positioned at the midpoint of its linear range. Proper signal transmission relies on impedance matching within the transducer loop. Cross-talk suppression is achieved through rigorous shielding and maintaining adequate distance from adjacent probe excitation fields, ensuring that the radial vibration and axial position vectors remain free from electromagnetic interference.

Ordering Info

• 330910-01-08-10-01-05 Proximity Transducer assembly

• Integral connector thread protection caps

• Installation documentation and technical manual

Field Installation Guidelines

Probe Positioning and Calibration

• Ensure the target shaft surface is free of metallic burrs or non-conductive coatings which may compromise the eddy-current field.

• Utilize a calibrated depth micrometer to set the gap, confirming that the DC output voltage reaches -10 VDC at the monitor terminal.

• Torque the probe locknut according to specification to prevent signal drift caused by thermal expansion or vibration-induced loosening.

Shielding and Cabling

• Route the integral coaxial cable through dedicated grounded metallic conduit to provide EMI protection.

• Terminate cable shields at a single-point instrument ground to eliminate ground-loop noise and ensure a stable reference voltage.

• Observe the minimum bend radius (typically 64 mm) to prevent internal dielectric deformation and characteristic impedance shifts.

Logistics and Packaging

• Delivery time: 3-5 days when payment finish.

• Dispatched via DHL/FEDEX/UPS.

• Each unit is sealed in anti-static industrial packaging for maximum protection during transit.

Frequently Asked Questions

• Q: Is this 5 mm probe compatible with standard 8 mm 3300 XL Proximitor sensors?

• A: No. The NSv (Near-field) system is tuned for the specific inductance of 5 mm probes. Using an 8 mm Proximitor will result in significant signal non-linearity.

• Q: What is the significance of the "NSv" designation?

• A: NSv (Near-field) systems are designed for high-resolution measurement in small-clearance applications where standard 8 mm probes lack the necessary signal-to-noise ratio.

• Q: Can I shorten the 1.0-meter integral cable in the field?

• A: No. The cable length is a fixed component of the tuned system impedance. Any modification to the cable will invalidate the factory-set calibration.

• Q: Does the agency approval (05) suffix affect the electrical output?

• A: No. This suffix designates regulatory safety compliance for hazardous areas and does not change the transducer’s fundamental frequency response or sensitivity.