Bently Nevada 149369-01 3500/25 Dual-Channel Keyphasor Module

Overview

The Bently Nevada 3500/25 149369-01 Enhanced Keyphasor Module is engineered for precise rotor speed and phase measurement in industrial machinery protection systems. Designed for compatibility with 3500 Series monitoring systems, it enables accurate predictive maintenance and reliable performance in demanding operational environments.

Key Features

• Dual-channel Keyphasor input for flexible monitoring

• Internal terminations simplify setup and configuration

• Supports integration with Triple Modular Redundant (TMR) systems

• Backward compatible with legacy 3500 series systems

• Compact, lightweight design for convenient installation

• User-friendly configuration for rapid deployment

Technical Specifications

• Input Signal: Single proximity probe input per channel, input impedance 10 kΩ

• Output Signal: Buffered transducer output 0–20 V DC, output impedance 150 Ω

• Frequency Range: 0.017 Hz to 100 kHz

• Phase Accuracy: ±1 degree

• Power Requirements: -24 V DC supply, max 7.7 W consumption

• Environmental Limits: Operating temperature -30°C to +65°C, storage -40°C to +85°C, humidity 95% non-condensing

• Physical Dimensions: 241 mm × 24.4 mm × 163 mm, weight 0.91 kg

Applications

Ideal for continuous phase and speed monitoring in critical machinery across:

• Power generation turbines and auxiliary equipment

• Oil & gas compressors and pipelines

• Manufacturing rotor systems requiring predictive maintenance

FAQ

Q1: What is the main function of the 149369-01 module?
A1: It provides high-precision rotor speed and phase monitoring for 3500 series systems.

Q2: Can it integrate with TMR systems?
A2: Yes, it is designed for triple modular redundant configurations.

Q3: What input signals does it support?
A3: Single proximity probe per channel with buffered output.

Q4: What environments can it operate in?
A4: It functions reliably between -30°C and +65°C with 95% non-condensing humidity.