Product Description

The 3500/25 (149369-01) is a high-performance, half-height Keyphasor module designed to provide critical timing signals for the Bently Nevada 3500 monitoring system. This module processes signals from proximity probes or magnetic pickups to provide accurate rotational speed and phase information. This data is utilized by other modules in the rack to perform vector-based measurements, such as filtered vibration amplitude and phase angle, which are essential for advanced machinery diagnostics.

The 149369-01 is an enhanced version offering expanded frequency response and improved phase accuracy. It is designed for high-reliability environments, supporting Triple Modular Redundant (TMR) rack configurations and maintaining full backward compatibility with standard 3500 systems. With two independent channels, it allows for redundant Keyphasor inputs or the monitoring of two separate shafts within a single module footprint.

Technical Specifications

• Module Type: Enhanced Keyphasor Module (Half-height)

• Part Number: 149369-01

• Series: Bently Nevada 3500

• Channel Configuration: Dual-channel input

• Input Signal Type: Proximity probes or magnetic pickups

• Input Impedance: 10 kΩ

• Frequency Range: 0.017 Hz to 100 kHz (1 RPM to 6,000,000 RPM)

• Phase Accuracy: ±1 degree

• Buffered Output: 0 to 20 V DC; 150 Ω output impedance

• Power Consumption: 7.7 Watts (Maximum)

• Supply Voltage: -24 V DC (via rack backplane)

• Operating Temperature: -30 °C to +65 °C (-22 °F to +150 °F)

• Storage Temperature: -40 °C to +85 °C (-40 °F to +185 °F)

• Physical Dimensions: 241 mm x 24.4 mm x 163 mm

• Weight: 0.91 kg (2.0 lbs)