Bently‑Nevada 3500/25 (125792‑01) Enhanced Keyphasor Module

Description

Bently‑Nevada 3500/25 (125792‑01) Enhanced Keyphasor Module

Product Overview

3500/25 125792‑01 is half‑height enhanced Keyphasor timing reference module for the Bently‑Nevada 3500 machinery protection systemBaker Hugh…. It conditions signals from proximity probes or magnetic pick‑ups, generates per‑turn timing reference pulse, calculates shaft rotating speed and provides phase reference for vibration monitoring modules. This timing signal is critical for 1X amplitude / phase measurement, rotor dynamic balancing and rotating‑machinery diagnostics.

Bently Nevada 350025 125792-01B

Key Specifications

Main Applications

• Steam turbine, gas turbine, centrifugal compressor machinery‑protection racks
• Power plant, petrochemical, refinery rotating‑equipment condition monitoring
• Vibration phase analysis, rotor balancing, vector‑based fault diagnosis
• TMR safety‑critical 3500 system (dual‑module parallel Keyphasor configuration)Baker Hugh…
• Retrofit & spare‑part replacement for legacy 3500 machinery‑protection installations
• Cooperates with System 1 diagnostic software for post‑event vibration analysis

Bently Nevada 350025 125792-01B

Related Series Models

• 3500/25 125792‑01 Legacy enhanced Keyphasor module
• 3500/25 149369‑01 New‑generation drop‑in replacement board setBaker Hugh…
• 3500/40M Prox/Vibration monitor module (consumes Keyphasor reference signal)
• 3500/22M Transient data interface module
• 3500/15 System power supply for 3500 rack

Core Features

1. Dual‑channel timing acquisition: Accept two independent key‑phasor transducers; can apply on two separate shafts or redundant sensing for one shaft for high‑reliability TMR racksKongJiang ….
2. Precision once‑per‑turn reference: Converts raw transducer pulses into standardized digital timing reference for all monitor modules in rack, enabling 1X/2X vibration‑phase calculation for rotor diagnostics.
3. Front‑panel buffered BNC outputs: Convenient connection to portable analyzers for on‑site troubleshooting and balancing work, plus rear‑side buffered outputs for system wiring.
4. User‑configurable trigger & hysteresis: Adjustable trigger level and hysteresis for adapting noisy field signals, reduces false triggering from electrical interference.
5. Full module‑level diagnostics: Detects transducer fault, signal loss and internal hardware error; reports status via rack RIM interface and front‑panel LED indicators.
6. Backward‑compatible half‑height form factor: Fits standard 3500 rack slots, hot‑swap capable within 3500 system environment.

Main Functions

1. Receive raw pulse signals from shaft key‑phasor proximity probes / magnetic pickups, perform signal conditioning and threshold triggering.
2. Generate accurate once‑per‑turn timing reference and compute real‑time shaft rotational‑speed data.
3. Distribute timing‑reference data across rack backplane to vibration‑monitor modules for phase‑locked vector‑vibration computation.
4. Provide buffered Keyphasor pulse outputs via front‑BNC and rear terminals for external diagnostic instruments.
5. Continuously monitor transducer health and module internal circuits, upload fault/alarm status to rack interface module (RIM) and host monitoring software.
6. Support paired multi‑module mode: up to 8 Keyphasor inputs in paired configuration for multi‑shaft complex machinery‑protection systemsBaker Hugh…。