Original Bently Nevada keyphasor I/O module for 3500 rack, speed and phase reference monitoring spare part.

Product Overview

135031‑01 is Keyphasor I/O module for Bently Nevada 3500 machinery protection rack. It receives once‑per‑revolution pulse signal from keyphasor sensor, provides precise phase reference and rotational speed measurement for the whole rack. It supports vibration phase analysis, dynamic balancing and overspeed protection logic, provides galvanic isolation for field signal circuits. Widely used as maintenance spare part for gas turbine, steam turbine and compressor rotating‑machinery protection systems

Key Features

• Collects keyphasor pulse signal for speed and phase angle reference
• Galvanic isolation between field sensor circuit and rack backplane
• Provides phase benchmark for vibration spectrum analysis and dynamic balance calculation
• Front‑panel LED indicators for signal input and module fault status
• Hot‑swappable plug‑in module for 3500 rack, convenient on‑site replacement

• Resists ground‑loop interference for industrial heavy‑duty environment

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Technical Specifications

• Brand: Bently Nevada (Baker Hughes)
• Model: 135031‑01
• Module Type: Keyphasor I/O Module
• Input Signal: Keyphasor once‑per‑revolution pulse
• Power Supply: Powered by 3500 rack backplane
• Operating Temp: ‑30℃ ~ +65℃
• Storage Temp: ‑40℃ ~ +85℃
• Humidity: 5‑95% non‑condensing

• Installation: Slot plug‑in for 3500 series rack

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Compatibility

Fits Bently Nevada 3500 system rack. Sensor wiring inspection and rack configuration download are required after replacement.