Bently Nevada 330703-000-060-50-02-05 3300 XL 11 mm Proximity Probe

Description

330703-000-060-50-02-05 specifies this unarmored metric 3300 XL 11 mm proximity probe configuration. The device features an M14 x 1.5 metric thread (330703) with 0 mm of unthreaded length (Option 000), an overall case length of 60 mm (Option 060), and a 5.0-meter total length (Option 50). It is equipped with a standard miniature coaxial ClickLoc connector (Option 02) and carries multiple agency approvals for hazardous environments (Option 05).

This configuration is used for non-contacting shaft vibration and displacement measurements on machines with fluid film bearings. The larger 11 mm probe tip provides an extended linear measurement range of 4.0 mm (160 mils), which is wider than standard 8 mm transducer systems. It is used for axial (thrust) position, steam turbine differential expansion, and reciprocating compressor rod position monitoring. The 5.0-meter integrated probe cable connects directly to a matching 5-meter Proximitor sensor, avoiding the need for a separate extension cable and reducing connection interfaces.

Features

• Unarmored Metric Body: Designed with an AISI 304 stainless steel case and a polyphenylene sulfide (PPS) tip without protective metal armor.
• Fully Threaded Case: Option 000 provides 0 mm of unthreaded length to maximize thread engagement.
• 60 mm Case Length: Option 060 defines a compact 60 mm metric housing for standard mounting configurations.
• 5.0 m Integrated Cable: Option 50 provides 5.0 meters of 75-ohm triaxial FEP-insulated probe cable for direct system connection.
• Secure ClickLoc Connection: Option 02 supplies a standard miniature coaxial ClickLoc connector with gold-plated brass contacts.
• Multiple Hazardous Area Approvals: Option 05 provides certified safety classifications under ATEX, IECEx, and CSA frameworks.

Applications

• Axial (thrust) position measurements on steam turbines and turbomachinery.
• Ramp differential expansion measurements.
• Rod drop or rod position monitoring on reciprocating compressors.
• Tachometer, speed, and Keyphasor phase reference signal sensing.
• Shaft radial vibration monitoring in large rotating machinery.

Ordering Information

Technical Specifications

Installation Guidelines

• Thread Limits: The maximum allowed length of thread engagement for M14 x 1.5 cases is 21 mm. Exceeding this limit can lead to binding during installation.
• Torque Limits: Do not exceed the maximum rated case torque of 63.3 N-m (560 in-lb). The recommended installation torque is 21.1 N-m (187 in-lb).
• Cable Protection: Maintain a minimum cable bend radius of 25.4 mm (1.0 in) to prevent coaxial conductor degradation.
• Connector Handling: Keep standard miniature coaxial ClickLoc connectors clean and dry. Ensure they are rated and insulated from local machine grounds.
• Cold Environments: Exposing the probe to temperatures below -34 degC (-30 degF) may cause premature degradation of the Viton pressure seal.

Compliance and Certifications

This probe configuration carries multiple certifications when ordered with Option 05:

• ATEX/IECEx: Intrinsically safe Ex ia IIC T5...T1 Ga and non-sparking Ex nA/ec IIC T5...T1 Gc for hazardous gas and dust atmospheres.
• CSA/North America: Class I, Zone 0 AEx/Ex ia IIC Ga; Class I Division 1 Groups A, B, C, D; Class I Division 2 Groups A, B, C, D.
• RoHS: Meets European Community Directive 2011/65/EU and China RoHS standards with a 15-year Environmentally Friendly Use Period (EFUP).