Bently Nevada 330703-000-100-10-01-CN 3300 XL 11 mm Proximity Probe

Description

Option 000 (0 mm unthreaded length) and Option 100 (100 mm metric case length) specify this 3300 XL 11 mm unarmored configuration — 330703-000-100-10-01-CN is an eddy-current proximity probe engineered for high-displacement machinery monitoring. This unarmored probe features an M14 x 1.5 metric thread and is built with a standard 75 ohm coaxial cable, a miniature ClickLoc coaxial connector, and a pre-installed fluorosilicone connector protector. The -CN suffix indicates that this probe is supplied with the China hazardous area approval package, certifying compliance with NEPSI and CCC safety regulations for explosive atmospheres.

Unlike standard unthreaded or English-thread configurations, this metric probe mounts directly into pre-tapped M14 threaded ports. With a total probe length of 1.0 meter (3.3 feet), this component connects directly to a 3300 XL 11 mm extension cable to build a complete 5.0-meter or 9.0-meter transducer system. The wider 11 mm probe tip provides a larger linear range of 4.0 mm, making it ideal for tracking large shaft movements or differential expansion where standard 8 mm probes lack sufficient range.

Features

• Metric M14 x 1.5 Thread Body without protective metal armor, designed for direct unarmored mounting.
• 0 mm Unthreaded Length Option (Option 000) providing a fully threaded case for rigid installation.
• 100 mm Overall Case Length Option (Option 100) allowing deeper penetration into the machine housing.
• 1.0 Meter Total Length Option (Option 10) featuring standard unarmored coaxial cable.
• Miniature Coaxial ClickLoc Connector equipped with a pre-installed fluorosilicone connector protector to block dust and moisture.
• -CN Approval Package indicating compliance with Chinese NEPSI and CCC hazardous location certification requirements.
• Wide 4.0 mm (160 mil) Linear Range providing reliable displacement readings at an incremental scale factor of 3.94 V/mm (100 mV/mil).
• Broad Temperature Range allowing continuous operation from -52 degC to +177 degC.
• Pressure-Sealing Construction with an integrated Viton O-ring to prevent process fluid leakage through the probe case.

Applications

• Turbine and compressor shaft vibration and axial position measurement on fluid film bearing machines.
• Thrust (axial) position measurements requiring wide displacement detection limits.
• Ramp differential expansion measurements on industrial steam turbines.
• Rod position or rod drop monitoring on reciprocating compressors.
• Tachometer, zero speed, and phase reference (Keyphasor) signal generation.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Electrical Isolation: Ensure the probe case and cable shield are insulated from local machine grounds to prevent electrical noise and ground loops.
• ClickLoc Connection: Hand-tighten the coaxial connectors securely. Avoid using pliers or other tools which can damage the miniature coaxial components. Ensure the fluorosilicone connector protector is completely seated.
• Thread Limits: To prevent binding during installation, the maximum thread engagement length for this M14 x 1.5 probe is 21 mm.
• Clearance and Crosstalk: Maintain a minimum target diameter of 30.5 mm and ensure no adjacent structural metal is within the sensor's electromagnetic field to avoid signal distortion.
• Cable Management: Secure coaxial cables using low-pressure cable clamps. Avoid tight bends (maintain a minimum bend radius of 25.4 mm or 1.0 inch) and protect exposed routing with conduit where necessary.

Compliance and Certifications

• EMC Standards: EN 61000-6-2 (Industrial Immunity), EN 61000-6-4 (Industrial Emissions).
• RoHS: European ROHS Directive 2011/65/EU and China RoHS.
• Hazardous Area Certifications: Covered by the -CN China package, providing official NEPSI and CCC approvals for intrinsically safe (ia) and non-sparking (nA, ec) installations.