Technical Documents

The Tech Docs library explains how Bently Nevada protection hardware is chosen, installed, configured, and troubleshot — written from the spare-parts bench, for the people who keep the machines running. Every guide is practical: part numbers, threads, connectors, and the mistakes we see most often.

New guides are added continuously. If you need the official factory datasheet for a specific model, ask with your inquiry and it travels with the quote.

Velomitor & Vibration Sensors Selection Guide

This guide walks through the parameters you need to order the right Velomitor & Vibration Sensors part the first time: dimensions, environment, and the part numbers of the units it must work with. Key points at a glance Velomitor and piezo-velocity families for bearing-cap and frame measurements Standard sensitivities: 7.87 V/mm/s (200 mV/in/s) and 100…
3300 XL Extension Cable Replacement & Cross-Reference

This page maps discontinued 3300 XL Extension Cable part numbers to the parts we stock today, and lists what stays interchangeable and what does not. Key points at a glance Standard lengths from 0.5 m to 9 m and beyond; armored and non-armored options Cable length must match the Proximitor configuration for correct linear range…
3500/15 & Legacy Power Supplies Configuration Basics

This page collects the configuration points that decide how a 3500/15 & Legacy Power Supplies unit behaves in the rack: setpoints, recording, and the interfaces it talks to. Key points at a glance 3500/15 power input module converts cabinet power to regulated rack supply Dual and triple (TMR) power input options for redundant racks Legacy…
3500 Monitoring System Overview

This overview explains what the 3500 Monitoring System family does inside a Bently Nevada protection train, which models belong to it, and how its parts fit together. Key points at a glance 3500/42M monitors radial and axial vibration in 4 channels per module Rack configuration lives in the 3500/20 interface — spare cards restore in…
3300 XL 8 mm Proximity Probe System Installation Notes

These installation notes summarize the mechanical and electrical points that decide whether a 3300 XL 8 mm Proximity Probe System installation performs to specification from day one. Key points at a glance Tip diameters: 5 mm, 8 mm standard; case lengths and threads per the installed system Gap voltage is set at the Proximitor; keep…
Probe & Sensor Housings Selection Guide

This guide walks through the parameters you need to order the right Probe & Sensor Housings part the first time: dimensions, environment, and the part numbers of the units it must work with. Key points at a glance Probe housings and pressurized housings for 31000/21000 series installations Velocity-transducer housings such as 107770 protect wet or…
Velomitor & Vibration Sensors Overview

This overview explains what the Velomitor & Vibration Sensors family does inside a Bently Nevada protection train, which models belong to it, and how its parts fit together. Key points at a glance Velomitor and piezo-velocity families for bearing-cap and frame measurements Standard sensitivities: 7.87 V/mm/s (200 mV/in/s) and 100 mV/g variants Mounting threads and…
3500/15 & Legacy Power Supplies Selection Guide

This guide walks through the parameters you need to order the right 3500/15 & Legacy Power Supplies part the first time: dimensions, environment, and the part numbers of the units it must work with. Key points at a glance 3500/15 power input module converts cabinet power to regulated rack supply Dual and triple (TMR) power…
3500 Monitoring System Troubleshooting

Work through this checklist before replacing a 3500 Monitoring System unit — most field symptoms trace to wiring, grounding, or configuration rather than a failed module. Key points at a glance 3500/42M monitors radial and axial vibration in 4 channels per module Rack configuration lives in the 3500/20 interface — spare cards restore in minutes…
3300 XL Extension Cable Installation Notes

These installation notes summarize the mechanical and electrical points that decide whether a 3300 XL Extension Cable installation performs to specification from day one. Key points at a glance Standard lengths from 0.5 m to 9 m and beyond; armored and non-armored options Cable length must match the Proximitor configuration for correct linear range FMS/LOC…

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