Product Parameters
- Model Number: 103928-02
- Manufacturer: Bently Nevada (Baker Hughes)
- System Series: 3500 Monitoring System
- Channel Count: 2-channel Keyphasor module
- Signal Input Type: Proximitor sensors, Magnetic pickups, or Pulse generators
- Operating Voltage: -24 Vdc (Standard rack power)
- Power Consumption: 2.0 Watts typical
- Input Impedance: 10 kΩ (Minimum)
Product Description The 103928-02 is a high-precision Keyphasor (KPH) input board specifically engineered for the Bently Nevada 3500 Series machinery protection system. This module processes once-per-turn or multiple-pulse-per-turn signals from transducers to provide critical timing information. It is essential for determining shaft rotational speed and providing a phase reference for vibration vector measurements, ensuring accurate diagnostic data for rotating machinery.
Product Applications This input board is widely used in power generation, oil and gas, and chemical processing industries. It is typically installed in 3500 racks monitoring steam turbines, gas turbines, centrifugal compressors, and large electric motors. By providing an accurate phase trigger, it enables the system to calculate synchronous vibration data and polar plots necessary for machinery health analysis.
Product Specifications
- Weight: 0.82 kg
- Dimensions: 24.1 cm x 2.4 cm x 10.3 cm
- Country of Origin: United States (USA)
- Environmental Rating: -30°C to +65°C Operating Temperature
Operational Precautions
- Slot Compatibility: Ensure the module is installed in the dedicated Keyphasor slot of the 3500 rack; refer to the rack backplane configuration before insertion.
- Transducer Matching: Verify that the input signal levels (thresholds) are correctly configured in the 3500 Rack Configuration Software to match the specific sensor type being used.
- Hot Swapping: While the 3500 system supports hot-swapping, use steady pressure and ensure the ejector tabs are fully locked to avoid intermittent data loss.
- Signal Shielding: Use shielded twisted-pair cabling for all sensor inputs to prevent electromagnetic interference from affecting phase accuracy.
Recommended Similar Product Models
| Model Number | System | Component Type |
|---|---|---|
| 3500/25 | 3500 Series | Enhanced Keyphasor Module |
| 3500/50 | 3500 Series | Tachometer Module |
| 135473-01 | 3500 Series | Keyphasor I/O Module (Internal Terminations) |
| 125792-01 | 3500 Series | Proximitor/Seismic Monitor |
| 330180-50-00 | 3300 XL | 5mm Proximitor Sensor |
