Key Technical Specifications

• Product Model: 3500/42M
• Part Number: 176449-02
• Manufacturer: Bently Nevada
• System Platform: 3500 Machinery Protection System
• Channel Configuration: 4-Channel Monitor
• Input Types: Eddy Current, Velocity, Acceleration, Dual Probe
• Resolution: 24-bit ADC
• Signal Processing: Filtering, Integration, Differential (Absolute Vibration)
• Power Consumption: 7.7 Watts
• Compliance: API 670

Functional Positioning & Application Scenarios

The BENTLY NEVADA 3500/42M 176449-02 is a high-performance, 4-channel monitor within the 3500 Machinery Protection System, designed to be the definitive source of truth for rotating equipment health. Its primary function is to solve the critical challenge of accurately measuring and protecting large turbines, compressors, and pumps from catastrophic vibration-related failures. By accepting multiple sensor types and performing advanced signal conditioning like filtering and integration on-module, the 3500/42M 176449-02 ensures that the control system receives clean, reliable, and actionable data, even in electrically noisy industrial environments.

• Scenario 1: Monitoring radial shaft vibration and axial position on a steam turbine, where the 3500/42M 176449-02 provides the high-resolution data needed for both protective trips and predictive maintenance trending.
• Scenario 2: Providing absolute shaft vibration measurement for a large gas turbine by using the module’s differential signal processing to extract casing vibration from relative shaft readings.
• Scenario 3: Serving as a direct replacement in an existing 3500 rack during a maintenance outage, ensuring seamless integration and continued protection for critical assets without system reconfiguration.

 

Quality Standards & Testing Process

We understand that a failed vibration monitor can lead to an unplanned turbine trip costing hundreds of thousands of dollars. Therefore, reliability is our non-negotiable standard. Every 3500/42M 176449-02 we supply undergoes a rigorous validation process to ensure it performs exactly as intended in your protection system:

• Visual & Physical Inspection: Each module is professionally cleaned and inspected for any signs of corrosion, damaged connectors, or previous repair attempts that could compromise long-term reliability in harsh environments.
• Live Rack Testing: The 3500/42M 176449-02 is installed on a live 3500 test frame and subjected to a continuous 24-hour power-on burn-in test to verify stable operation and check for any thermal or power-related issues.
• Signal Path Verification: We inject calibrated signals into each channel, confirming that the 24-bit ADC accurately digitizes the input, signal conditioning functions correctly, and data is properly communicated across the backplane.
• Warranty Commitment: Only units that pass every single test step are approved for shipment. Each 3500/42M 176449-02 is backed by a 12-month warranty, giving you complete confidence in your critical protection hardware.

Compatibility & Upgrade Path

To guarantee the 3500/42M 176449-02 is a perfect fit for your application, our technical advisors recommend verifying the following critical compatibility points:

• Sensor Compatibility: Confirm your field sensors (e.g., 3300 XL, 9200) are compatible with the 3500/42M 176449-02. The module supports multiple input types, but the specific sensor model and cable length must be configured correctly in the 3500 Rack Configuration Software.
• Frame & Power: Ensure your 3500 frame has an available slot and that the power supply has sufficient capacity for the additional 7.7W load. The module must be installed in a slot compatible with monitor modules.
• Direct Replacement: The 176449-02 is a standard part number for the 3500/42M. If you are replacing an existing module, this is a direct, plug-and-play replacement. However, always verify the configuration matches your application requirements.
• Expert Verification: Unsure about your sensor setup or configuration needs? Contact us immediately. Our technical team will review your system and provide a free compatibility check to ensure you get the correct 3500/42M 176449-02 solution.