Bently 350045 176449-04U 4-Channel Position Monitor

Description

Bently 350045 176449-04U 4-Channel Position Monitor

Product Dimensions：

1. Product Detailed Description

The 3500/45 Position Monitor is a 4-channel instrument that processes signals from various position transducers. It compares these signals against user-programmable alarm setpoints to provide machinery protection and essential information for maintenance.

The 176449-04 is the updated, standard version of the monitor module (main board). It is capable of performing several different types of position measurements by pairing channels (e.g., Channels 1 & 2 can perform one function, while 3 & 4 perform another).

Supported Measurement Functions:

• Axial (Thrust) Position: Tracks the axial movement of a shaft.

• Differential Expansion: Measures the relative growth between a machine casing and its rotor.

• Case Expansion: Monitors the thermal growth of the machine casing.

• Valve Position: Monitors the opening/closing position of steam or fuel valves.

• Standard/Non-standard Single Ramp, Dual Ramp, and Complementary Differential Expansion.

2. Product Parameters (Specifications)

3. Product Advantages

• High Versatility: A single module can handle diverse position measurements (Thrust, Expansion, Valve) simply through software configuration.

• Integrated Protection: Features “Alert” and “Danger” setpoints that can drive relay modules for automatic machine shutdown to prevent catastrophic failure.

• API 670 Compliant: Designed to meet the stringent American Petroleum Institute (API) 670 standards for machinery protection.

• Enhanced Reliability: Built with internal self-tests and “OK” status monitoring to ensure the system is always functioning correctly.

4. Cautions & Precautions

• Software Configuration: Each channel pair must be correctly configured using the 3500 Rack Configuration Software. Incorrect settings can lead to false trips or failure to trip.

• I/O Module Compatibility: The 176449-04 is the main module. It must be used with a compatible I/O Module (e.g., 135137-01 for internal terminations) to function.

• Terminal Connections: For AC LVDTs or external terminations, specific external terminal blocks are required and must be ordered separately.

• TMR Limitations: In Triple Modular Redundant (TMR) applications, Valve Position measurements are generally not available.

5. Product Applications

The 3500/45 is essential for monitoring large-scale industrial machinery:

• Steam & Gas Turbines: Monitoring thrust bearing wear and differential expansion during start-up/thermal cycles.

• Centrifugal Compressors: Ensuring the rotor remains within safe axial limits.

• Power Plants: Tracking valve positions for governor control and performance monitoring.

• Hydroelectric Turbines: Measuring gate positions and shaft alignment.

Payment: Bank of Chicago, Bank of Singapore

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