Bently Nevada 8851-LC-MT Position Monitor Module

Product Brief Introduction The Bently Nevada 8851-LC-MT is a multi-channel position monitoring module for measuring shaft radial vibration and position in rotating machinery.
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Technical Specifications 2 independent measurement channels; compatible with eddy-current proximity probes; measurement range: 100 mil / 2.5 mm standard; 4–20mA analog output per channel; 24V DC power supply; bandwidth: DC to 1 kHz; operating temperature: -40°C to +65°C.

Functional Features Non-contact displacement measurement; gap voltage monitoring; sensor OK detection; analog proportional output; peak-to-peak and gap measurement.

Application Scenarios Turbine shaft vibration monitoring, compressor shaft position measurement, pump radial vibration monitoring, rotating machinery shaft orbit analysis.

Performance Parameters High measurement resolution; excellent linearity; stable gap reference; reliable sensor fault detection.

Material Composition Industrial plastic housing, precision analog front-end, eddy-current sensor interface circuit, digital signal processor.

Structural Characteristics Rack plug-in module, front status indicators, rear sensor and output terminals, system backplane connector.

Working Principle Drives eddy-current proximity probes and processes return signals to measure shaft displacement relative to the probe. It calculates vibration amplitude and gap distance, and outputs proportional analog signals for monitoring and protection.

Installation Requirements Install in monitoring rack; connect matched proximity probe and extension cable; configure probe calibration values per channel.

Usage Notes Use matched probe and extension cable; calibrate probe system at installation; verify gap voltage during commissioning.




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