The Bently Nevada 1034549-21, also cataloged as the 1701/25 FieldMonitor Seismic Input Monitor, operates as a dedicated hardware component for seismic signal acquisition and vibration evaluation within the FieldMonitor monitoring system.
Hardware Specifications
Parameter
Specification
Model
1034549-21
Brand
Bently Nevada
Origin
USA
Product Type
FieldMonitor Seismic Input Monitor Module
System Series
1701/25 FieldMonitor
Module Function
Two-channel seismic vibration monitoring
Input Channels
2 independent seismic input channels
Supported Sensors
Velocity transducers and acceleration sensors
Measurement Type
Absolute casing and structural vibration monitoring
Direct Velocity Bandwidth
3 Hz to 5,500 Hz
Direct RMS / Integrated Bandwidth
10 Hz to 5,500 Hz
Signal Filtering
Programmable high-pass and low-pass filtering, 4th order (-80 dB/decade)
Alarm Configuration
Alarm 1 Alert and Alarm 2 Danger based on proportional vibration values
Alarm Time Delay
Configurable range from 0.15 s to 20.0 s
Diagnostics
Internal self-test functions for sensor and signal loop verification
Dimensions
Approx. 15.2 cm x 10.2 cm x 2.5 cm
Weight
Approx. 0.1 kg to 0.3 kg
Compliance
CE certification and API 670 machinery protection design alignment
Eddy-Current and Rotor Dynamics Signal Processing
The Bently Nevada 1034549-21 processes vibration-related signals from seismic sensors and converts field measurements into monitored vibration values. In addition, the module applies signal conditioning functions to maintain measurement stability across configured frequency ranges.
The FieldMonitor architecture supports machinery condition evaluation by analyzing casing vibration behavior. Moreover, Bently Nevada monitoring systems commonly apply rotor dynamics principles, vibration amplitude tracking, and signal integrity verification for rotating equipment protection.
The module design focuses on accurate seismic input handling, alarm threshold evaluation, and continuous vibration data processing. Furthermore, the signal path minimizes unwanted interference through controlled filtering and channel processing methods.
Frequently Asked Questions
Q: How many vibration measurement channels does the Bently Nevada 1034549-21 support? A: The module provides two independent seismic input channels for vibration monitoring applications.
Q: What sensor types can connect to the 1034549-21 module? A: The module accepts seismic transducer inputs, including velocity sensors and acceleration sensors used for casing or structural vibration measurement.
Q: Does the module support configurable vibration alarm functions? A: Yes. The module provides Alarm 1 Alert and Alarm 2 Danger settings based on proportional vibration values with configurable time delays.
Field Installation Guidelines
Install the module inside the designated FieldMonitor hardware enclosure according to the system installation documentation.
Connect seismic sensor wiring using proper shielded industrial instrumentation cables to reduce electromagnetic interference.
Maintain separation between vibration signal cables and high-current power conductors to prevent signal coupling.
Verify sensor polarity, signal continuity, and grounding conditions before system commissioning.
Confirm vibration alarm settings and filtering parameters after completing field wiring checks.
Follow applicable machinery protection practices when integrating the module into rotating equipment monitoring systems.
