Bently Nevada 3500/25 149369-01 Enhanced Keyphasor Module

Description

Product Overview

• Brand: Bently Nevada
• Model: 3500/25 149369-01
• Series: 3500 Machinery Protection System
• Enhanced Keyphasor module for accurate shaft timing reference.
• Half-height design saves rack space.
• Two independent channels ensure redundancy.
• Converts probe signals into stable digital timing pulses.
• Fully compatible with existing 3500 Keyphasor systems.

Core Value Highlights

• High timing accuracy improves diagnostic confidence.
• Wide frequency handling supports slow and high-speed machines.
• Strong noise immunity ensures clean signals.
• Drop-in upgrade from legacy PWA 125792-01.

Technical Specifications

• Module Type: Enhanced Keyphasor Timing Module
• Channels: Two independent inputs
• Measurement Range: 1 to 1,200,000 cpm
• Frequency Response: 0.017 Hz to 20 kHz
• Output Range: 1 to 99,999 cpm
• Input Signal Level: +0.8 V to -21.0 V
• Isolated Input Option: +5 V to -11 V
• Input Impedance: ≥21.8 kΩ
• Accuracy Low Speed: ±1 cpm
• Accuracy Mid Speed: ±8 cpm
• Accuracy High Speed: ±1% of reading
• Resolution: One pulse per shaft event
• Linearity: Maintained across full range
• Output Impedance: ≤504 Ω
• Power Consumption: 3.2 W typical
• Transducer Supply: -24 Vdc, 40 mA per channel

Environmental & Reliability Limits

• Operating Temperature: -30°C to +65°C
• Storage Temperature: -40°C to +85°C
• Humidity Tolerance: 95% non-condensing
• Designed for harsh industrial environments.

Installation Guidance

• Install into any compatible 3500 rack slot.
• Connect probes or pickups directly to front terminals.
• Use rear Euro-style connectors for system wiring.
• No special tools required.

Commissioning & Maintenance

• Auto-recognized by 3500 configuration software.
• Minimal calibration required.
• Front indicators simplify troubleshooting.
• Hot-swappable with proper procedures.

Compatibility & Integration

• Works with proximity probes and magnetic pickups.
• Supports isolated and non-isolated I/O modules.
• Backward compatible with legacy Keyphasor designs.

Certifications & Compliance

• Manufactured under Bently Nevada quality standards.
• Complies with industrial safety and EMC requirements.

Typical Applications

• Steam and gas turbines.
• Compressors and large pumps.
• Motors and generators.
• Critical rotating machinery protection systems.

Diagnostic Capabilities

• Provides accurate phase reference.
• Enables speed, phase, and orbit analysis.
• Supports advanced fault detection.

Package Contents

• One 3500/25 149369-01 Enhanced Keyphasor Module.
• Factory-tested and ready to install.

Warranty & Logistics

• Warranty: 12 months.
• Shipping via FedEx, UPS, or DHL.
• Worldwide delivery available.

FAQ

• What is the main function?
• It provides precise shaft timing reference.
• Can it replace older Keyphasor modules?
• Yes, it supports direct system upgrades.
• Is it suitable for low-speed machines?
• Yes, accuracy remains high at very low speeds.
• How to choose the right Keyphasor?
• Select based on speed range and probe type.
• Does noise affect signal quality?
• The design resists electrical interference.

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