Bently Nevada 135489-03 3500/42M I/O Module with Internal Barriers

Description

The 135489-03 is a rear-slot I/O module with internal barriers designed for the Bently Nevada 3500/42M Proximitor Seismic Monitor system. It provides four channels of internal intrinsic safety barriers and internal termination wiring interfaces specifically configured for connection to Velomitor sensors on channels 1 through 4.

This module routes dynamic transducer signals to the 3500/42M main processing monitor while offering built-in galavanic and zener isolation circuits required for hazardous area installations. Operatives and plant engineers utilize the 135489-03 to monitor rotational vibration and velocity parameters on industrial machinery, passing critical static values and buffered signals to control systems, plant networks, and individual channel recorder outputs.

Features

• Integrates four channels of internal intrinsic safety barriers for direct connection to Velomitor sensors.
• Provides internal terminal strip connectors for field wiring termination.
• Installs into a single full-height rear rack slot directly behind the 3500/42M main monitor board.
• Includes independent analog recorder output connections for all four channel signals.
• Certified for hazardous location installations under cNRTLus, ATEX, and IECEx requirements.

Applications

• Continuous vibration and velocity monitoring for industrial pumps, fans, and electric motors
• Compressor and steam turbine condition monitoring in hazardous process areas
• Intrinsically safe field transducer signal conditioning for rotating machinery protection
• Online 24/7 machinery protection in oil and gas, chemical, and power generation facilities

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Insert the module into one full-height rear rack slot located directly behind the associated 3500/42M main processing monitor module.
• Wire field sensor cables directly to the dedicated channel screw terminal header blocks.
• Maintain proper grounding and shield termination according to installation drawing 138547 for hazardous area intrinsic safety compliance.
• Ensure ambient operating conditions remain within the specified range of 0 degC to +65 degC.

Compliance and Certifications

• cNRTLus: Class I, Zone 2: AEx/Ex nA nC ic [ia Ga] IIC T4 Gc; Class I, Zone 2: AEx/Ex ec nC ic [ia Ga] IIC T4 Gc; Class I, Division 2, Groups A, B, C, and D (W/ IS Output for Division 1); T4 @ Ta = -20 degC to +65 degC (-4 degF to +149 degF) when installed per drawing 138547
• ATEX/IECEx: Ex nA nC ic [ia Ga] IIC T4 Gc; Ex ec nC ic [ia Ga] IIC T4 Gc; T4 @ Ta = -20 degC to +65 degC (-4 degF to +149 degF) when installed per drawing 138547
• EMC: European Community Directive 2014/30/EU (EN 61000-6-2, EN 61000-6-4)
• Electrical Safety: European Community Directive 2014/35/EU (EN 61010-1)
• RoHS: European Community Directive 2011/65/EU; China RoHS SJ/T 11364-2024
• Maritime: ABS Marine and Offshore Applications; DNV GL Rules for Classification
• FCC: Complies with Part 15 of the FCC Rules