Bently Nevada 330703-000-100-10-02-CN 3300 XL 11 mm Proximity Probe

Configured for high-range displacement sensing in machine monitoring systems, the Bently Nevada 330703-000-100-10-02-CN (330703 11 mm Proximity Probe) provides direct physical execution of vibration and shaft position measurements. This probe is engineered for applications requiring a larger sensing area and increased linear range compared to standard 8 mm probes, maintaining the high-frequency response necessary for effective rotor dynamics analysis.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 11 mm transducer system utilizes an eddy-current probe scaling optimized for the larger tip geometry, providing a linear range greater than standard 5 mm or 8 mm probes. During installation, the gap voltage must be validated at the Proximitor sensor output; technicians should target a -10 VDC reading at the linear center of the operating range. Proper cross-talk suppression is required when multiple probes are installed in proximity; failure to maintain minimum separation distances or shielding integrity will result in induced signal interference.

Frequently Asked Questions

Q: Can the 330703 11 mm probe be used with a standard 8 mm Proximitor sensor?

A: No. The Proximitor sensor must be specifically calibrated for the 11 mm probe geometry to maintain the correct linear scale factor and electrical impedance match. Mixing mismatched components introduces significant measurement nonlinearity.

Q: What is the purpose of the CN suffix in this model?

A: The CN suffix indicates that the probe assembly is certified for use in hazardous areas, complying with ATEX, IECEx, and NEPSI standards. Ensure the installation meets the specific safety requirements for these classified environments.

Field Installation Guidelines

• Probe Gap Setting: Thread the probe into the mounting assembly until the desired gap is achieved, then secure it using the locking nut. Ensure the tip is centered over the target surface to avoid signal distortion.
• Shielding: Maintain the continuity of the coaxial shield throughout the cable run. The shield should be grounded only at the Proximitor sensor terminal block to prevent ground loops.
• Connector Care: Inspect the ClickLoc interface for cleanliness before mating. In high-vibration environments, ensure the connector protector is fully engaged to prevent accidental disconnection.
• Cable Routing: Adhere to the minimum bend radius of 25.4 mm (1.0 inch). Do not subject the coaxial cable to excessive pulling force, which could damage the internal dielectric and shift the electrical impedance.