Bently Nevada 330706-005-046-10-02-00 3300 XL 11 mm Reverse Mount Probe

Description

330706-005-046-10-02-00: This 3300 XL 11 mm Reverse Mount Probe configuration specifies a metric M10 x 1 threaded housing, 5 mm unthreaded length, 46 mm case length, 1.0 meter total length, a miniature ClickLoc connector, and no hazardous area approvals. This reverse mount variant is designed without options for protective armor, FluidLoc cable jackets, or integrated connector protectors, optimizing the physical diameter for tight sleeve installations inside machinery housings where space is limited.

This non-contacting eddy-current sensor is used for vibration and position measurements on fluid film bearing machinery, offering a wide 4.0 mm linear range. By utilizing a larger 11 mm tip diameter, this probe yields a scale factor of 3.94 V/mm (100 mV/mil) and works in combination with a 3300 XL 11 mm extension cable and Proximitor sensor. It is typically applied in machinery monitoring scenarios such as axial shaft position, steam turbine differential expansion, and reciprocating compressor rod drop measurements where standard 8 mm probes lack the necessary linear range.

Features

• M10 x 1 metric threads: Defines the reverse mount thread pitch specifically used on the 330706 model variant.
• 5 mm unthreaded and 46 mm case lengths: Refers to option codes 005 and 046, providing a compact profile for bracket and internal housing mounts.
• 1.0 meter triaxial FEP cable: Configured with standard FEP insulation and a 3.3-foot cable length (Option 10) for minimum distance wiring.
• Miniature coaxial ClickLoc connector: Option 02 provides a gold-plated ClickLoc connector that locks securely to prevent loose connections.
• Fluid film bearing machine compatibility: Designed for non-contacting shaft displacement measurements on large industrial turbine and compressor systems.

Applications

This reverse mount proximity probe is used for non-contact shaft displacement and position monitoring on large rotating machinery. Common applications include:

• Axial (thrust) shaft position measurements
• Ramp differential expansion measurements on steam turbines
• Rod position or rod drop measurements on reciprocating compressors
• Tachometer, phase reference (Keyphasor), and zero speed measurements
• Radial vibration and position monitoring in fluid film bearing machines

Ordering Information

Technical Specifications

Installation Guidelines

During reverse mount installations, secure the M10 x 1 threaded probe body using a reverse mount sleeve or dedicated housing bracket. To maintain seal integrity, do not expose the probe assembly to ambient temperatures below -34 degC before initial pressurization. When tightening the probe into its mount, do not exceed the maximum rated torque of 22.6 N-m (200 in-lb); the recommended mounting torque is 7.5 N-m (66 in-lb). Ensure that the cable bend radius is kept at a minimum of 25.4 mm (1.0 in) to protect the triaxial shielding. Always pair this 1.0-meter probe with a compatible 3300 XL 11 mm extension cable (4.0-meter length for a 5-meter total system, or 8.0-meter length for a 9-meter total system) and matching 3300 XL Proximitor sensor.

Compliance and Certifications

This probe configuration (Option 00) does not require or carry specific hazardous area approvals. However, the 3300 XL transducer system components comply with broad regulatory standards when installed as a system:

• EMC Directive 2014/30/EU
• RoHS Directive 2011/65/EU