Bently Nevada 330850-51-CN 3300 XL 25 mm Proximitor Sensor

Description

330850-51-CN specifies this 3300 XL 25 mm Proximitor Sensor configuration, featuring a 5.0-metre (16.4-foot) system length, a DIN-rail mount design (Option 51), and the -CN China hazardous area approval package (NEPSI and CCC approvals).

This sensor accepts input from a 3300 XL 25 mm proximity probe and extension cable to complete a 5.0-metre transducer system. The system yields an average scale factor of 0.787 V/mm (20 mV/mil) over a 12.7 mm (500 mils) linear range, which is used for measuring differential expansion on mid-size to large steam turbine generators or shaft vibration and axial position on industrial machinery.

Features

• Option 51 configuration provides a 5.0-metre (16.4-foot) system calibration and high-density DIN-rail mounting.
• Option -CN designation provides the China hazardous area approval package with NEPSI and CCC certifications.
• Scale factor of 0.787 V/mm (20 mV/mil) over a 12.7 mm (500 mils) linear range.
• Thin housing profile is designed for compact electrical cabinet installations.
• SpringLoc terminal strips provide reliable field wiring connection points without special tools.
• RFI and EMI immunity prevents interference from nearby high-frequency radio signals.

Applications

• Steam turbine generator differential expansion (DE) monitoring.
• Axial thrust position measurement on large machinery shafts.
• Rod-drop monitoring in reciprocating compressors.
• Rotating machinery protection in petrochemical and power generation facilities.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Mount the Proximitor inside an enclosure to provide a degree of protection of at least IP54 if the environment is subject to dust or water.
• Ensure the Proximitor total calibrated length of 5.0 metres matches the sum of the physical probe length and extension cable length.
• Ground the coaxial shield at the monitor side and run field wiring using three-conductor shielded triad cable to reduce electrical noise.

Compliance and Certifications

• Complies with the European CE mark standard for electromagnetic compatibility.
• Certified under the -CN China approval package for hazardous area conditions (NEPSI and CCC approvals).
• Intrinsically safe (Ex ia IIC T5...T1 Ga) and non-sparking (Ex nA/ec IIC T5...T1 Gc) when installed per approved Bently Nevada wiring diagrams.