Bently Nevada 330703-010-040-10-02-CN 3300 XL 11 mm Proximity Probe

Description

330703-010-040-10-02-CN: 3300 XL 11 mm proximity probe with M14 x 1.5 metric thread, 10 mm unthreaded length (Option 010), 40 mm overall case length (Option 040), 1.0 m total length (Option 10), and miniature ClickLoc coaxial connector (Option 02). This configuration is supplied with the -CN China hazardous area approval package, certifying the probe for use in explosive environments under NEPSI and CCC regulations.

The 3300 XL 11 mm proximity probe is used within 3300 XL 11 mm monitoring chains to measure axial position, ramp differential expansion, rod drop, or speed. This unarmored M14 x 1.5 thread variant operates over a 4.0 mm (160 mils) linear range, which begins approximately 0.5 mm (20 mils) from the target. It connects to a 330780 Proximitor sensor via a 330730 extension cable to achieve a 5-meter or 9-meter total system length.

Features

• Option 010 specifies a 10 mm unthreaded length.
• Option 040 specifies a 40 mm threaded case length.
• Option 10 specifies a 1.0 meter (3.3 feet) probe total length.
• Option 02 provides a miniature coaxial ClickLoc connector with no connector protector on standard cable.
• M14 x 1.5 thread design provides direct metric threaded mounting without an armor sleeve.
• Suffix -CN incorporates China hazardous area approvals including NEPSI and CCC markings.
• Gold-plated brass ClickLoc coaxial connector prevents signal degradation and holds connections securely.
• TipLoc molding process creates a structural bond between the polyphenylene sulfide (PPS) probe tip and the stainless steel body.

Applications

• Turbine and compressor rotor axial (thrust) position monitoring.
• Ramp differential expansion measurements on steam turbines.
• Rod position or rod drop monitoring on reciprocating compressors.
• Non-contact shaft radial vibration and speed (Keyphasor) measurement on heavy industrial rotating machinery.

Ordering Information

Technical Specifications

Installation Guidelines

• Mounting Torque: Do not exceed the maximum case torque of 63.3 N-m (560 in-lb) during installation. Recommended tightening torque is 21.1 N-m (187 in-lb).
• Gap Setting: Set the initial probe gap to approximately 2.5 mm (100 mils) from the target surface, which corresponds to the mid-range operating voltage.
• Cable Handling: Maintain a minimum cable bend radius of 25.4 mm (1.0 in) to prevent internal coaxial damage.
• Connector Torque: Connect the ClickLoc miniature coaxial connectors finger tight. Do not exceed a maximum torque of 0.565 N-m (5 in-lb).
• Environmental Protection: Wrap the probe-to-extension cable connection with the provided silicone tape in humid or wet environments. Avoid tape usage if the connection is directly exposed to turbine oil.

Compliance and Certifications

• China Compulsory Certification (CCC): Certified for hazardous environments and electrical safety standards in China.
• NEPSI Approval: Certified for explosion protection and intrinsic safety in China.
• CE Mark: Meets European Union standards for electromagnetic compatibility and safety (EN 61000-6-4).
• RoHS Directive: Complies with European Directive 2011/65/EU and China RoHS regulations (15-year EFUP designation).
• Functional Safety: Qualified for SIL 2 (HFT=0) and SIL 3 (HFT=1) safety-instrumented systems.