Bently Nevada 3500/25 Enhanced Keyphasor Module

Technical Specifications

Model: 3500/25

Brand: Bently Nevada

Product Type: Enhanced keyphasor module

Spare Part No: 125792‑01,126648‑01

Channel Layout: 2 independent input channels per module

Supported Transducer: proximity transducer,magnetic pickup sensor

Frequency Range: 0.05 Hz to 20 kHz

Speed Measurement Accuracy: ±0.02%

Signal Output: Digital Keyphasor pulse signal to internal rack backplane; external buffered keyphasor output

Diagnostic Function: Sensor signal amplitude monitoring,input fault detection

Power Consumption: 6.0W,supplied by 3500 rack backplane

Status Indicator: OK LED,CH1 LED,CH2 LED,FAULT LED

System Compatibility: Bently Nevada 3500 machinery protection rack

Max Keyphasor Input: Up to 4 keyphasor signals in standard configuration,up to 8 in paired configuration

Module Form: Half‑height rack‑mount module

Weight: 0.45kg

Dimension: 120.7mm×24.4mm×256mm

Protection Grade: IP20

Certification: UL,CSA,CE

Working Temperature: ‑30℃ ~ +65℃,non‑condensing

Storage Temperature: ‑40℃ ~ +85℃

Humidity: 5%‑95% non‑condensing

Application: Turbine,compressor,pump,fans rotating machinery monitoring,provides phase reference and rotational speed signal for vibration vector analysis,3500 rack system maintenance and spare‑part replacement.

Product Details

3500/25 is a half‑height enhanced keyphasor module for Bently Nevada 3500 machinery protection rack. It accepts pulse signals from proximity probes or magnetic pickups and converts them into standardized digital Keyphasor timing pulses for other monitor modules inside the rack.

It provides precise shaft rotational speed and phase reference signals,enables 1X amplitude,phase,bode plot and other vector‑based vibration analysis. Each channel supports sensor fault diagnosis for abnormal signal amplitude. Multiple 3500/25 modules can be installed in one rack to support multi‑shaft equipment. It is backward compatible with legacy keyphasor module designs. For TMR triple‑modular‑redundant applications,please follow system configuration requirements for redundant keyphasor signal sourcing.

Note: This is legacy 3500 series spare component,widely used for replacement of turbine and compressor TSI monitoring & protection systems.