Description
Bently 3500/25‑01‑01‑00 (125800‑01)
- Key Features: Two independent Keyphasor input channels; accepts proximity probe or magnetic pickup input; generates digital once‑per‑revolution timing pulse; provides rotational‑speed and phase‑angle reference for vibration vector calculation; internal termination circuit; hot‑swap support; configurable trigger threshold parameters.
- Technical Specifications & Performance Parameters
- Channel quantity: 2 independent Keyphasor input channels
- Power consumption: 4.2 W typical
- Operating temperature: 0 ℃ ~ +60 ℃
- Storage temperature: ‑40 ℃ ~ +85 ℃
- Maximum measurable rotational speed: 200 000 RPM
- Weight: 0.28 kg
- Agency approval: base version without hazardous‑area certification
- Material Composition: FR‑4 multilayer printed circuit board; high‑speed timing‑processing chip; trigger‑threshold adjustment circuit components; gold‑plated backplane edge connector; metal front‑panel with LED status indicators; internal signal termination circuit components.
- Structural Features: Half‑height plug‑in rack‑module mechanical structure; front‑panel LED indicators for power and Keyphasor signal status; rear‑side gold‑plated edge connector connects to rack internal backplane bus; signal termination integrated inside module without external I/O wiring; mechanical locking latch for rack‑slot fixation.
- Working Principle: Module receives analog trigger signal from field‑installed Keyphasor proximity probe or magnetic pickup. According to user‑configured trigger threshold, module identifies shaft notch or gear‑tooth passing event. It generates standardized digital Keyphasor pulse signal, and transmits timing pulse and calculated rotational‑speed value to every monitor module through rack backplane bus. Monitor modules calculate vibration phase angle, 1X amplitude and rotor orbit based on this timing reference.
- Application Scenarios: Rotational‑speed measurement and phase reference for steam turbines and centrifugal compressors; rotor orbit and vector‑vibration calculation; machinery fault dynamic diagnosis; 3500 rack speed‑protection function implementation; power‑plant and petrochemical rotating‑machinery TSI systems.
- Installation Requirements: Insert half‑height module into designated rack slot; fasten mechanical locking latch; configure trigger threshold and input‑sensor type in 3500 rack configuration software; verify Keyphasor pulse output by barring‑rotation test of rotating shaft; confirm speed value displayed on rack system interface.
- Usage Notes: Static‑electricity protection must be followed during module handling; avoid unauthorized hot‑swap; check front‑panel signal LED status during daily inspection; adjust trigger threshold value matching actual shaft notch geometry; keep complete rack configuration backup file.
