330901-00-90-10-01-05 | 3300 NSv 9-Inch Probe Bently Nevada

Product Overview

The 330901-00-90-10-01-05 is a high-precision Bently Nevada 3300 NSv (Narrow System vent) proximity probe designed for machinery with tight internal clearances or small-diameter shaft targets. This model features an extended 9.0-inch case length, allowing it to penetrate deep machine housings to reach critical monitoring points. Engineered for industrial reliability, it provides non-contact displacement measurements with a sensitivity of 0.5 V/mm and a frequency response up to 10 kHz. Its IP67-rated construction ensures the sensor remains dust-tight and waterproof, making it ideal for the demanding environments of centrifugal compressors and high-speed turbines.

Technical Configuration

The model number 330901-00-90-10-01-05 specifies a deep-reach hardware configuration:

• Unthreaded Length (00): 0.0 inches; fully threaded barrel for precise axial adjustment.
• Overall Case Length (90): 9.0-inch extended case for deep-access installations.
• Total Length (10): 1.0 meter (39 inches) of integrated probe cable.
• Connector/Cable Option (01): Standard miniature coaxial connector equipped with a connector protector.
• Agency Approval (05): Multiple Approvals (ATEX, IECEx, CSA) for global hazardous area compliance.

Technical Specifications

Installation Guide

Due to the 9.0-inch case length, extra care must be taken during installation to avoid cross-threading. The 1/4-28 UNF threads allow for fine-tuned gap adjustment when setting the probe's electrical center.

Connector Protection

This model is supplied with a connector protector. During installation, ensure the miniature coaxial connector is fully seated before sliding the protector into place. This prevents the ingress of moisture or oil, which can cause signal degradation or ground loops. The standard cable should be routed through a protective conduit to maintain the 10 kHz frequency response integrity.

Engineering Advantages

The 3300 NSv series is specifically weight-optimized (starting at 14g for base models) to prevent mechanical resonance issues in small machinery. The high sensitivity rating of 0.5 V/mm allows the system to detect microscopic shaft vibrations that standard larger probes might miss. Furthermore, the "05" agency approval suite simplifies global spare parts management by ensuring the probe meets ATEX, IECEx, and CSA standards simultaneously.

Technical FAQs

Q1: When should I use an NSv probe instead of a standard 3300 XL 8mm probe?
A1: NSv probes are ideal when the target shaft diameter is less than 13 mm (0.5 in) or when the available mounting space cannot accommodate a larger 8mm probe tip.

Q2: Is the IP67 rating applicable to the connector area?
A2: The IP67 rating primarily applies to the probe head and case. The connector area achieves its maximum environmental resistance only when the supplied connector protector is correctly installed and sealed.

Q3: Does the 9.0-inch case length affect the frequency response?
A3: No. The internal sensing coil and cable impedance are calibrated to maintain a flat frequency response up to 10 kHz regardless of the external stainless steel case length.