Bently Nevada 149986-02 3500/45 Dual-Seismic Vibration Monitoring I/O Module - Image 1

Bently Nevada 149986-02 3500/45 Dual-Seismic Vibration Monitoring I/O Module - Image 2

Bently Nevada 149986-02 3500/45 Dual-Seismic Vibration Monitoring I/O Module

Bently Nevada 149986-02 3500/45 Dual-Seismic Vibration Monitoring I/O Module

Technical Specifications

Manufacturer: Bently Nevada (Baker Hughes)
Product Type: Dual-Seismic Vibration Monitoring I/O Module
Series Compatibility: 3500 Series Machinery Protection System (3500/45)
Electrical Parameters:
- Power Supply: Derived from 3500 rack backplane (no external power required)
- Input Compatibility: Seismic sensors (accelerometers: 4-20 mA, IEPE; velocity transducers: 0-50 mm/s peak)
- Input Channels: 2 independent seismic input channels
- Measurement Parameters: Vibration acceleration (0-50 g peak), velocity (0-100 mm/s peak), displacement (0-1000 μm peak)
- Accuracy: ±0.2% of full scale
- Resolution: 16-bit ADC
- Frequency Response: 0.5 Hz to 10,000 Hz (-3 dB)
Environmental Ratings:
- Operating Temperature: -30°C to +65°C
- Storage Temperature: -40°C to +85°C
- Relative Humidity: 5% to 95% (non-condensing)
- Vibration Resistance: 5 g (10-2000 Hz)
- Shock Resistance: 50 g (11 ms half-sine)

Category: Bentley

Description

Physical & Mechanical Properties:
- Dimensions (W×H×D): 24.4 mm × 241.3 mm × 99.1 mm
- Weight: 0.48 kg
- Mounting: 1 full-height slot in 3500 series rack
- Connector Type: Terminal block (for sensor wiring)
Certifications: API 670 compliant; CE, UL, ATEX, IECEx certified

Functional Features

Dual-Channel Monitoring: Supports two independent seismic sensors, enabling simultaneous measurement of vibration at two locations (e.g., drive-end and non-drive-end bearings).
Multi-Parameter Measurement: Configurable to measure vibration acceleration, velocity, or displacement, adapting to diverse machinery monitoring needs.
Sensor Excitation: Provides 24 VDC excitation for IEPE accelerometers, eliminating the need for external power supplies.
Redundant Reliability: Compatible with 2-out-of-2 or 3-vote redundant setups, ensuring continuous monitoring even if a module or sensor fails.
Built-In Diagnostics: Features self-test functionality and status LEDs (OK, Fault, Bypass) for quick visual verification of module and sensor health, simplifying troubleshooting.
Seamless Software Integration: Transmits data to Bently Nevada’s System 1 software for real-time trending, fault diagnosis, and predictive maintenance scheduling.
Harsh Environment Resilience: Withstands extreme temperatures, vibration, and electrical noise, ensuring consistent performance in refineries, power plants, or mining sites.
Alarm Configuration: Allows user-programmed warning and danger thresholds, triggering alerts or shutdowns to protect machinery from catastrophic failure.

Application Scenarios

Power Generation: Monitors bearing housing vibration in steam turbines, gas turbines, and generators, preventing rotor damage and ensuring stable energy production.
Oil and Gas Industry: Used in upstream (drilling rig motors), midstream (pipeline compressors), and downstream (refinery pumps) to track structural and component vibration.
Chemical Processing: Tracks agitator and reactor vibration in corrosive environments, complying with strict process safety standards.
Steel Manufacturing: Monitors rolling mill bearings and fan vibration in high-temperature, high-dust settings, supporting continuous production.
Mining & Heavy Industry: Protects crushers, conveyor drives, and cement mill bearings from vibration-induced wear, minimizing downtime in rugged operations.
Marine Engineering: Monitors ship propulsion system bearings and auxiliary pump vibration, resisting saltwater corrosion and marine shock.
Aerospace & Defense: Used in ground-based gas turbine test stands to measure structural vibration during engine performance validation.

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