Bently Nevada 330709-000-040-50-02-00 3300 XL 11 mm Proximity Probe

Description

Option 000 (0 mm unthreaded length) and Option 02 (ClickLoc connector, standard cable without protector) specify this metric 3300 XL 11 mm proximity probe configuration — 330709-000-040-50-02-00. Featuring an unarmored M16 x 1.5 threaded stainless steel body, this probe provides a 4.0 mm (160 mil) linear measurement range when paired with a matching 5.0-meter 3300 XL Proximitor Sensor and extension cable. The 5.0-meter total length option allows direct connection to a 5.0-meter Proximitor without requiring a separate extension cable, simplifying installation in space-constrained layouts.

Unlike variants configured with stainless steel armor or protective connector boots, this unarmored configuration offers maximum flexibility for standard conduit runs. It is engineered for non-contacting shaft vibration, axial position, and differential expansion measurements on rotating machinery such as turbines, compressors, and pumps. This specific option combination is designated for non-hazardous environments where formal agency approval is not required.

Features

• Option 000 unthreaded design provides a fully threaded M16 x 1.5 probe body for secure mounting depth adjustment.
• Option 040 specifies a compact 40 mm overall case length ideal for standard mounting brackets.
• Option 50 provides a 5.0 m (16.4 ft) total probe length, optimized for 5-meter system configurations.
• Option 02 ClickLoc miniature coaxial connector delivers secure, vibration-resistant connections.
• Unarmored FEP insulated triaxial cable offers excellent chemical resistance and high flexibility.
• Large 11 mm tip diameter extends the linear range compared to standard 8 mm transducer systems.

Applications

This 11 mm proximity probe is utilized in heavy industrial rotating machinery monitoring systems. Typical applications include:

• Steam turbine ramp differential expansion monitoring
• Compressor and turbine axial (thrust) position measurements
• Shaft radial vibration monitoring on fluid-film bearing machines
• Tachometer, zero-speed, and phase reference (Keyphasor) signal generation
• Reciprocating compressor rod drop and rod position measurements

Ordering Information

Technical Specifications

Installation Guidelines

• Ensure the mounting bracket is tapped to receive the M16 x 1.5 metric thread.
• Verify the probe gap is set to the recommended 2.5 mm (100 mils) using a feeler gauge or by measuring the DC voltage output of the Proximitor (typically -10 Vdc at middle gap).
• Observe the maximum torque rating of 63.3 N-m (560 in-lb) during installation to prevent damage to the threaded case.
• Route the coaxial cable through protective metal conduit to protect the FEP jacket from abrasive contact or mechanical pinch points.
• Maintain the minimum cable bend radius of 25.4 mm (1.0 in) to preserve signal integrity and coaxial shielding.

Compliance and Certifications

• RoHS Directive 2011/65/EU compliant
• CE Mark (when installed with appropriate 3300 XL Proximitor Sensor and mounting)