Product Introduction: 3500/33-01-00 149986-01
The 3500/33-01-00 149986-01 is a specific hardware version of the Keyphasor® Module for the Bently Nevada 3500 Machinery Protection System. This module is a specialized input module designed to condition and process the signal from a single Keyphasor transducer (typically a proximity probe or magnetic pickup). Its primary function is to provide a clean, reliable once-per-revolution timing reference pulse to all other monitor modules in the 3500 rack. This Keyphasor signal is fundamental for measuring rotational speed, phase angle for vibration analysis, and for synchronizing data acquisition during machine startup, shutdown, and transient events.
Technical Parameters
The key technical specifications for the 3500/33-01-00 149986-01 module are summarized in the table below.
| Parameter | Specification |
|---|---|
| Part Number | 3500/33-01-00 149986-01 |
| System | Bently Nevada 3500 |
| Module Type | Keyphasor® Module (Single Channel) |
| Dimensions (H x W x D) | 190 mm x 55 mm x 120 mm (Standard 3500 Rack Slot) |
| Weight | 0.47 kg |
| Input Channels | 1 |
| Input Signal Type | Proximity Probe or Magnetic Pickup |
| Input Signal Frequency Range | 0.5 Hz to 30,000 RPM |
| Keyphasor Signal Output | Provides a once-per-revolution digital pulse to all monitor modules in the rack |
| LED Indication | Provides a real-time LED blink for each Keyphasor pulse |
| Power Supply | Powered by the 3500 Rack; +24 VDC from the rack's power supply |
| Operating Temperature | -20°C to +65°C |
Application Scenarios
The 3500/33 Keyphasor Module is a critical component for any machinery protection system that requires phase-referenced vibration data and precise timing.
Phase Reference for Vibration Analysis:
Essential for providing the timing mark needed to measure the phase angle of vibration vectors. This is critical for diagnosing imbalance, misalignment, and other mechanical faults on turbines, compressors, and large pumps.
Synchronized Data Acquisition:
Allows all vibration and position monitor modules in the rack to synchronize their data sampling with the shaft's rotation, enabling accurate orbits, waveform plots, and transient data capture during startups and shutdowns.
Speed and Overspeed Protection:
While not a tachometer itself, it provides the critical input for the system to accurately calculate rotational speed, which can be used for overspeed protection functions.
Turbine Supervisory Instrumentation:
A mandatory component in monitoring systems for steam and gas turbines, where accurate phase and speed information is non-negotiable for protection and analysis.
Commissioning and Balancing:
Provides the necessary phase reference for field balancing of rotors and for verifying the mechanical health of a machine during its initial startup and commissioning.
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Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
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7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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