Bently Nevada 330704-00-60-10-02-CN 3300 XL 11 mm Proximity Probe

Description

330704-00-60-10-02-CN: 3300 XL 11 mm proximity probe with a metric M14 x 1.5 thread and integrated stainless steel protective armor. This specific configuration features a fully threaded 60 mm overall case length (Option 60) with 0 mm of unthreaded length (Option 00), a 1.0 meter total length (Option 10), and a miniature coaxial ClickLoc connector (Option 02). Suitable for challenging industrial environments, this armored configuration includes the -CN China hazardous area approval package, certifying it under NEPSI and CCC schemes for explosive gas atmospheres.

As part of the Bently Nevada 3300 XL 11 mm Proximity Transducer System, this probe is used for non-contacting vibration, rotor position, and axial displacement measurements on rotating machinery. Compared to standard 8 mm transducer systems, this 11 mm tip configuration provides a longer linear measurement range of 4.0 mm (160 mils), making it well-suited for axial thrust measurements, steam turbine differential expansion, and reciprocating compressor rod drop monitoring. The integrated flexible AISI 302 stainless steel armor with FEP outer jacket offers exceptional mechanical and abrasion protection over standard unarmored configurations like the 330703 series.

Features

• M14 x 1.5 threaded case manufactured from AISI 304 stainless steel with 0 mm unthreaded length (fully threaded) and 60 mm total case length.
• Flexible AISI 302 stainless steel protective armor with an FEP outer jacket to guard the triaxial probe cable from abrasion and mechanical damage.
• 1.0 meter total cable length for direct connection with a 3300 XL 11 mm extension cable (such as 330730) to establish a 5.0 m or 9.0 m system length.
• Miniature coaxial ClickLoc connector (Option 02) providing a secure connection without a pre-installed connector protector.
• -CN China hazardous area approval package, featuring NEPSI and CCC certifications for safe deployment in zoned hazardous environments.
• 11 mm probe tip made of high-strength Polyphenylene sulfide (PPS) to resist harsh process chemicals and high temperatures.
• Viton O-ring pressure seal built into the tip assembly to prevent media leakage through the probe case.

Applications

• Turbine and compressor shaft vibration and dynamic motion analysis
• Rotor axial (thrust) position measurements on fluid-film bearing machines
• Steam turbine ramp differential expansion monitoring
• Rod position or rod drop measurements on reciprocating compressors
• Tachometer, zero speed, and Keyphasor phase reference signal generation
• Heavy industrial rotating machinery in power generation, petrochemical, and oil and gas facilities

Ordering Information

Technical Specifications

Installation Guidelines

• Cable Routing: Maintain a minimum bend radius of 25.4 mm (1.0 in) for the armored probe cable to avoid internal coaxial degradation.
• Mounting Torque: For M14 x 1.5 threads, do not exceed the maximum rated installation torque of 63.3 N-m (560 in-lb). The recommended mounting torque is 21.1 N-m (187 in-lb).
• Proximity Gap: Establish an initial mechanical gap of 2.5 mm (100 mils) from the target, corresponding to the electrical center of the linear calibration curve.
• Connector Coupling: Connectors should be coupled finger-tight. Do not exceed 0.565 N-m (5 in-lb) of torque. Silicone tape is not recommended for connection sealing where exposed to turbine oils.
• Grounding and Shielding: Properly ground the sensor shield at the monitor end. Ensure the ClickLoc connection is isolated from machine ground if not using isolated mounting blocks.

Compliance and Certifications

• China Approvals: NEPSI and CCC certified under the -CN package for safe operation in explosive atmospheres.
• CE Mark: Compliant with European Community EMC Directive 2014/30/EU and RoHS Directive 2011/65/EU (EFUP 15 years).
• Functional Safety: SIL 2 (HFT = 0), SIL 3 (HFT = 1) certified when integrated in standard machinery safety networks.
• Hazardous Areas (General): Intended for intrinsic safety (ia) or non-incendive (nA, ec) installations when connected per official drawings 141092 or 140979.