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Bently Nevada 3500/70M 136449-09 Velocity Monitoring Module

Bently Nevada 3500/70M 136449-09 Velocity Monitoring Module

Product Description

The 3500/70M (Part Number 136449-09) is a specialized four-channel monitoring unit designed for the Bently Nevada 3500 Machinery Protection System. This module is engineered to interface with seismic...

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SKU: 3500/70M 136449-09
Vendor: Bently Nevada
Category: Velocity Monitoring Module
Related Series:

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Product Description

The 3500/70M (Part Number 136449-09) is a specialized four-channel monitoring unit designed for the Bently Nevada 3500 Machinery Protection System. This module is engineered to interface with seismic velocity transducers to provide continuous tracking of casing vibration. By converting raw transducer signals into peak or RMS velocity data, it allows plant engineers to monitor the mechanical health of balance-of-plant equipment such as fans, pumps, and motors, ensuring early detection of structural looseness or rotational imbalance.

Technical Specifications

Specification Details
Channel Count 4 independent velocity input channels per module
Signal Processing High-precision 24-bit A/D conversion for signal integrity
Frequency Range User-configurable bandpass filtering (standard 10 Hz to 1,000 Hz)
Measurement Units Velocity (IPS/mm/s) or integrated Displacement (mils/µm)
Buffered Outputs Front-panel BNC connectors for high-speed data acquisition
System Integration Fully compatible with the 3500/22M Rack Interface Module
Physical Dimensions 2.6 cm x 25.6 cm x 24.4 cm
Net Weight 0.85 kg
Operating Temperature -30°C to +65°C (-22°F to +150°F)

Application Expertise

The 136449-09 serves as a critical defense layer for rotating machinery where casing vibration is the primary indicator of stress. It compares real-time vibration levels against two levels of user-programmable alarms (Alert and Danger). When thresholds are breached, the module communicates with the rack's relay modules to initiate automated machinery trips, preventing costly downtime and equipment destruction.

Engineering FAQ

Q: What is the difference between the 136449-09 and other 3500/70M variants?
A: The 136449-09 designates a specific hardware revision and firmware set optimized for high-reliability seismic monitoring. It is essential to match the assembly number during replacement to ensure full compatibility with the existing rack configuration.