330101-00-19-15-11-05 Bently Nevada 3300 XL 8mm Proximity Probe

Product Overview

The Bently Nevada 330101-00-19-15-11-05 is a high-performance 8mm proximity probe engineered for the 3300 XL Transducer System. As a critical link in machinery protection, this eddy current sensor provides continuous, non-contacting measurement of shaft vibration and position. It is specifically designed for industrial applications where oil or other fluids might migrate through the cable, utilizing specialized FluidLoc technology to maintain signal integrity.

This probe excels in monitoring large-scale rotating equipment such as steam turbines, compressors, and motors. By generating a high-frequency electromagnetic field, the sensor detects minute changes in the gap between the probe tip and the target shaft. This data allows for the early identification of rotor instability, bearing wear, and misalignment, ensuring operational safety and preventing costly unscheduled downtime.

Technical Configuration

The 330101 series utilizes a structured alphanumeric code to define its mechanical and electrical footprint, ensuring precise compatibility with existing Turbine Supervisory Instrumentation (TSI).

• Unthreaded Length (00): Indicates a 0.0-inch unthreaded section. The 3/8-24 UNF threads cover the entire probe barrel, providing maximum adjustability within the mounting bracket.

• Overall Case Length (19): A 1.9-inch barrel length offers a compact profile, ideal for standard bearing housing depths where a shorter probe footprint is required.

• Total Length (15): Specifies a 1.5-meter (4.9 feet) integrated lead. This length is typically used in conjunction with a 3.5-meter or 7.5-meter extension cable to reach a total system length of 5.0 or 9.0 meters.

• Connector and Cable-Type (11): Features the miniature coaxial ClickLoc connector equipped with a factory-installed connector protector. The "FluidLoc" cable construction prevents moisture or oil from "wicking" through the cable interior.

• Agency Approval (05): Multiple global certifications including CSA, ATEX, and IECEx, permitting installation in Zone 0, 1, and 2 hazardous environments.

Technical Specifications

Engineering Installation Guide

Precise mechanical installation dictates the accuracy of the vibration data sent to the 3500 Monitoring System.

Voltage Gap Calibration

Installers must set the "cold gap" by monitoring the DC output voltage. Thread the probe into the mounting hole until the probe tip touches the shaft (carefully), then back it out until the Proximitor output reaches -10.0 VDC. This voltage represents the center of the linear range, allowing the sensor to capture vibration excursions in both the positive and negative directions without saturation.

Connector Protection

The "11" option includes a connector protector. During installation, ensure the protector is properly seated over the ClickLoc coupling. This prevents environmental contaminants like oil, dust, and moisture from entering the coaxial connection, which is the most common cause of "glitch" or signal noise in proximity systems.

Engineering Advantages

The 330101-00-19-15-11-05 is preferred for applications involving high-pressure oil environments. The FluidLoc cable acts as a primary barrier, ensuring that even if the probe tip seal is compromised, oil cannot travel through the cable into the junction box.

Furthermore, the 3300 XL 8mm system offers the most robust thermal stability in the industry. It maintains a consistent scale factor even as bearing temperatures fluctuate during machine start-up cycles. The global "05" approval rating simplifies procurement for international projects, as the same hardware meets the safety requirements of North American (CSA), European (ATEX), and International (IECEx) standards.

Technical FAQs

Q1: Can I use this probe without an extension cable?

A1: No. The 3300 XL system is tuned for a specific electrical length (usually 5.0 or 9.0 meters). This 1.5-meter probe must be paired with the correct extension cable (e.g., a 3.5-meter cable for a 5-meter system) to maintain the 200 mV/mil scale factor.

Q2: What is the benefit of the "without armor" (330101) version?

A2: Probes without armor are more flexible and have a smaller outer diameter cable, making them easier to route through tight internal conduits and small-diameter tubing where armored cables would be too rigid or bulky.

Q3: Does the "11" connector option require special tools?

A3: No. The ClickLoc connector is designed for hand-tightening. The "click" provides tactile confirmation that the connection is secure. The added connector protector is a slip-on sleeve that requires no extra hardware.

Q4: Is this probe compatible with the older 3300 (Non-XL) system?

A4: Yes, the 3300 XL 8mm probe is backward compatible with standard 3300 Proximitor sensors, though using the full XL system (Probe, Cable, and Proximitor) provides the best performance and linearity.