Bently Nevada 330850-90-00 3300 XL 25 mm Proximitor Sensor

Description

Option 90 (9.0 m system length, panel mount) and Option 00 (no required approvals) specify this 3300 XL 25 mm Proximitor Sensor configuration — 330850-90-00.

This sensor processes eddy-current signals from a 3300 XL 25 mm proximity probe and extension cable to measure large-target shaft displacement, differential expansion, or thrust position. It operates with a nominal scale factor of 0.787 V/mm (20 mV/mil) over a 12.7 mm (500 mils) linear range. This specific 9.0 m panel-mount sensor configuration is intended for installations where the total combined probe and extension cable length equals 9.0 meters. The unit features built-in SpringLoc terminal strips for field wiring connections, providing RFI/EMI shielding without specialized tools.

Features

• Option 90 configuration specifies a 9.0 meter system length tailored for large-machinery monitoring applications.
• Integrated panel-mount design secures with standard mounting screws on control panel plates or enclosures.
• Built-in SpringLoc terminal strips facilitate fast field wiring connections without requiring specialized installation tools.
• Advanced RFI/EMI immunity meets European CE mark requirements without requiring specialized mounting shielding.
• Linear output scales at a nominal 0.787 V/mm (20 mV/mil) over the entire 12.7 mm linear range.
• Option 00 means no hazardous area approvals are specified for this particular sensor unit.

Applications

• Steam turbine thrust position monitoring
• Differential expansion measurements on large machinery shafts
• Rod-drop monitoring in reciprocating compressors
• Large target non-contact shaft displacement measurements

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Mount the Proximitor sensor securely using standard panel mount screws on a flat surface inside a protective housing or enclosure.
• Connect only a 3300 XL 25 mm extension cable and probe with a combined total electrical length matching the 9.0 m system calibration.
• Ensure field wiring uses recommended 0.2 to 1.5 mm2 (16 to 24 AWG) shielded triad cable between the Proximitor and the monitoring system.
• Route the coaxial cabling with a minimum bend radius of 25.4 mm (1.0 in) to prevent internal physical damage to the conductor.
• Keep the sensor terminal area free of moisture or dust. Ensure connectors are protected with silicone self-fusing tape in high-humidity areas.

Compliance and Certifications

• CE Mark compliant
• RoHS compliant