The Bently Nevada 3500/42 135489‑01 is a four‑channel Proximitor/Seismic Monitor designed for the 3500 Machinery Protection System. This version incorporatesinternal intrinsic‑safety barriers, enabling direct connection to IS‑rated proximity probes and seismic sensors installed in hazardous areas such as Zone 0/1.
Technical Specifications
General
Model: 3500/42
Part Number: 135489‑01
Type: Proximitor/Seismic Monitor
Channels: 4 independent monitoring channels
Supported Sensor Types
Eddy‑current Proximitor® proximity probes
Accelerometers
Velocity sensors
Seismic transducers
Monitoring Functions
Radial Vibration
Thrust Position
Differential Expansion
Eccentricity
Shaft Absolute
Velocity
Acceleration
REBAM (Rolling‑Element Bearing Analysis)
Signal Processing
Automatic linearization
Filtering and gain adjustment
Phase measurement
Sensor health diagnostics
Alarm Capabilities
Configurable Alert and Danger setpoints
Works with 3500/22M TDI for system‑level trip logic
Intrinsic Safety (IS) Features
Integrated galvanic isolation barriers
Direct connection to hazardous‑area IS sensors
Energy‑limited design suitable for IS applications
Physical
Dimensions: 241.3 × 24.4 × 163.1 mm
Weight: ~0.46 kg
Mounting: Standard 3500 rack slot
Origin: USA
Key Features
Internal Intrinsic‑Safety Barriers：Allows direct wiring to hazardous‑area sensors without external IS modules, reducing panel space and wiring complexity.
High‑Integrity Machinery Protection：Provides real‑time monitoring of vibration, position, velocity, and acceleration, meeting API 670 protection requirements.
