Bently Nevada 18745-04 7200 Series Proximitor

Description

The 18745-04 is a 7200 Series Proximitor sensor designed for non-contact eddy-current transducer systems. This specific configuration, denoted by Option 04, is calibrated for a combined probe and extension cable system length of 9 metres (29.6 feet). It functions by generating a radio frequency signal that is radiated through the probe tip to measure static and dynamic distances between the sensor and the observed target.

This Proximitor is a key component for machinery monitoring, commonly applied to measure shaft radial position, axial thrust position, and vibration on rotating and reciprocating equipment such as gas and steam turbines, compressors, pumps, and electric motors. It features a three-conductor, shielded cable interface for signal output and power supply, ensuring compatibility with 7200 Series monitoring systems and the ability to locate the sensor up to 1,000 feet from standard monitors without signal degradation.

Features

• System configuration for 9 metre (29.6 feet) total length
• Designed for 7200 Series 5 mm and 8 mm proximity transducer systems
• Provides 80 mils (2 mm) of linear measuring range
• Compatible with API 670 requirements for industrial machinery protection
• Three-conductor, shielded cable interface for signal output and power input
• Operating temperature range from -51 Celsius to +100 Celsius

Applications

• Radial vibration monitoring for bearing condition analysis
• Axial thrust position measurement to detect bearing wear
• Rotor stability monitoring via shaft average radial position
• Vibration amplitude and phase angle plotting for diagnostic analysis
• Eccentricity measurement to monitor rotor bow

Ordering Information

Technical Specifications

Installation Guidelines

Ensure the Proximitor is mounted within a suitable 7200 Series housing. Use shielded, three-conductor cabling to maintain signal integrity between the Proximitor and the monitor. The sensor may be installed up to 1,000 feet from the monitor. Verify system length (probe plus extension cable) matches the 9-metre calibration of this 18745-04 unit. Ensure the probe and extension cable are secured using proper environmental protection, such as stainless steel armor, if the machinery environment involves physical abuse or chemicals.