Bently Nevada 3500/40M 176449-01+126615-01 Proximitor® Monitor

The Bently Nevada 3500/40M 176449-01 + 126615-01 is a four-channel Proximitor® monitor within the 3500 Machinery Protection System. It is designed to measure and protect critical rotating machinery by processing signals from Proximitor® proximity probes. This module is capable of monitoring parameters such as radial vibration, shaft axial position, and shaft-to-case clearance. With its high accuracy, dual-level alarm functions, and buffered outputs for diagnostics, the 3500/40M provides both machinery protection and condition monitoring in mission-critical industrial environments.

Main Features

• Four independent input channels supporting Proximitor® proximity probes

• Configurable monitoring modes including radial vibration, axial position, and thrust position

• Two alarm setpoints per channel (Alert and Danger) with relay outputs

• Buffered transducer outputs available for analysis and diagnostics

• 4–20 mA proportional outputs for integration with DCS or PLC systems

• Hot-swappable module design for easy replacement without disturbing rack operation

• High reliability with continuous self-checking and fault tolerance

• Designed for critical machinery protection in harsh industrial conditions

Technical Specifications

Dimensions and Weight

General Information

Electrical Characteristics

Environmental Specifications

Industry Applications

The Bently Nevada 3500/40M 176449-01 + 126615-01 is widely used for machinery protection and condition monitoring in critical industries, including:

• Oil & Gas–Compressor, pump, and turbine vibration and position monitoring

• Power Generation–Turbine and generator shaft vibration and thrust monitoring

• Chemical & Petrochemical–Reactor and compressor machinery protection

• Steel, Metals & Mining–Large rotary equipment such as mills, fans, and crushers

• Industrial Manufacturing–Motors, pumps, blowers, and rotating machinery monitoring