Bently Nevada 330780-91-CN 3300 XL 11 mm Proximitor Sensor

Description

330780-91-CN specifies the 9.0 m DIN-rail mount configuration of the 3300 XL 11 mm Proximitor Sensor, equipped with the China hazardous area approval package. This sensor performs non-contacting eddy-current displacement measurement within 3300 XL 11 mm monitoring chains, outputting an analog voltage directly proportional to the distance between the probe tip and the observed target surface.

This variant pairs with 3300 XL 11 mm probes and extension cables to monitor shaft vibration, axial position, and rotor dynamics. Unlike the 5.0 m options or panel-mount configurations, this model is factory-calibrated for a 9.0 m system length and integrates DIN-rail mounting hardware. Additionally, the -CN suffix designates NEPSI and CCC certifications required for localized hazardous area compliance in the Chinese market.

Features

• Option 91 specifies a 9.0-meter system length configured for DIN-rail mounting.
• Suffix -CN designates the China hazardous area approval package including NEPSI and CCC certification.
• Accepts input from 3300 XL 11 mm proximity probes and matching extension cables.
• Generates a continuous analog voltage output of 3.94 V/mm (100 mV/mil).
• Uses gold-plated brass ClickLoc coaxial connectors for physically secure cabling.
• Constructed with an A380 aluminum housing.

Applications

• Steam and gas turbine shaft vibration and axial position monitoring
• Centrifugal and axial compressor rotor dynamics
• Industrial pump and generator shaft position tracking
• Critical rotating machinery protection systems

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

Ensure that the Proximitor sensor is mounted on a 35 mm DIN rail in a dry, clean industrial enclosure providing a minimum of IP54 protection. Maintain appropriate clearance for field wiring and terminal connections. Use three-conductor shielded triad cable (0.2 to 1.5 mm2 or 16 to 24 AWG) for connections between the Proximitor sensor and the monitoring system. Verify that the sum of the probe length and extension cable length matches the 9.0 m system calibration length of the sensor.

Compliance and Certifications

The 330780-91-CN transmitter meets the following compliance requirements:

• NEPSI (National Supervision and Inspection Centre for Explosion Protection and Safety of Instrumentation) - CN Option
• CCC (China Compulsory Certification) - CN Option
• CE Mark (EMC Directive 2014/30/EU and RoHS Directive 2011/65/EU)
• SIL 2 (HFT = 0) and SIL 3 (HFT = 1) functional safety compliance