Introduction to 3500/22M-01-01-00 288055-01
The 3500/22M-01-01-00 288055-01 is a critical monitoring module from the Bently Nevada 3500 Series, a globally recognized system for machinery protection. This specific model is a Dual Channel AC Voltage Input Monitor, with the "M" suffix indicating a TMR (Triple Modular Redundant) configuration.
Its primary function is to monitor dynamic (AC) voltage signals from sensors such as accelerometers (used for high-frequency vibration analysis) with the highest level of reliability. In a TMR system, three identical modules work in parallel, and a "voter" logic circuit uses a 2-out-of-3 decision to determine the correct output. This architecture ensures continuous, fault-tolerant operation even if one of the internal channels fails. It is essential for protecting critical machinery where any single point of failure is unacceptable.
Technical Parameters
The following table details the key specifications for the 3500/22M module.
| Parameter | Specification |
|---|---|
| Product Family / Series | Bently Nevada 3500 |
| Module Type | Rack-Monitoring Module (TMR) |
| Function | Dual Channel AC Voltage Input Monitor (Accelerometer / Velocity) |
| Architecture | Triple Modular Redundant (TMR) |
| Compatible Sensors | Accelerometers (e.g., ICP® type), Velocity Seismic Transducers |
| Key Measurements | Acceleration, Velocity (via integration) |
| Alarm Channels | Two dedicated alarm relays per channel (Alert and Danger) |
| Input Power | Powered by the 3500 Rack |
| Communication | Integrates with the 3500 TMR framework |
| Operating Temperature | 0°C to +65°C (+32°F to +149°F) |
| Mounting | Installs in a 3500 Series TMR rack |
| Approx. Dimensions (H x W) | 3 U (133.4 mm) x 1/4 Rack Width * |
| Approx. Weight | ~ 1.2 kg (2.65 lbs) |
Note: The exact dimensions are defined by the rack slot it occupies.
Application Scenarios
This TMR vibration monitor is deployed in the most critical applications where the highest Safety Integrity Level (SIL) or fault tolerance is required for machinery protection.
Critical Compressor Protection: Monitoring casing vibration on large, critical compressors in LNG facilities and offshore platforms to detect bearing wear and other high-frequency faults, where an unplanned shutdown has enormous economic and safety consequences.
Gas Turbine Monitoring: Providing highly reliable vibration monitoring for large industrial gas turbines in power generation, ensuring that the protection system remains operational even in the event of an internal component failure.
Safety-Critical Fans and Pumps: Protecting essential equipment in nuclear power or other process industries where continuous operation and system integrity are paramount, and redundancy is mandated.
High-Speed Machinery Analysis: Used in any critical application where accelerometer-based vibration monitoring is required and system availability cannot be compromised by a single module failure.
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