Description
Detailed parameter table
| Parameter name | Parameter value |
| Product model | 3500/42M 176449-02 |
| Manufacturer | Bently Nevada |
| Product category | Machinery Protection System Vibration Monitor |
| Channel configuration | 4 independent monitoring channels |
| Measurement type | Radial vibration, axial position, differential expansion |
| Frequency range | 0.1 Hz to 10 kHz |
| Sampling rate | 256 samples per second per channel (continuous), 12,800 sps (transient) |
| Accuracy | ±0.2% of full scale |
| Alarm capability | Configurable dual alarm levels per channel (Alert, Danger) |
| Operating voltage | 5 VDC, ±15 VDC (from 125744-02 rack backplane) |
| Power consumption | 8 W typical, 10 W maximum |
| Operating temperature | 0°C to +60°C (32°F to +140°F) |
| Form factor | 3500 system rack mount (2 slot width) |
| Dimensions | 266 mm (H) × 72 mm (W) × 229 mm (D) (10.5″ × 2.8″ × 9.0″) |
| Compatibility | 125744-02 racks, 133388-01 transient monitors, 136711-01 cables |
| Certification | UL, CE, RoHS compliant, IEC 61010-1 approved |
BENTLY 3500/42M 176449-02
Product introduction
The 3500/42M 176449-02 from Bently Nevada is a high-performance vibration monitoring module that serves as the core measurement component in 3500 Machinery Protection Systems. This 2-slot module is specifically engineered to continuously monitor radial vibration, axial position, and differential expansion in rotating machinery, providing real-time data that forms the foundation of machinery health protection strategies. As a critical protection and monitoring component, 3500/42M 176449-02 works in tandem with 133388-01 transient monitors to deliver both continuous protection and detailed transient analysis capabilities.
Bently Nevada’s 3500/42M 176449-02 module bridges the gap between sensor input and protection system action, converting raw vibration signals from sensors connected via 136711-01 cables into meaningful machinery health metrics. Installed in 125744-02 racks and configured through 136180-01 modules, it provides immediate alarm activation during abnormal conditions while feeding continuous data to both display modules and transient capture systems. This dual functionality makes it indispensable for both preventing machinery damage through timely shutdowns and enabling predictive maintenance through trend analysis.
Core advantages and technical highlights
Multi-parameter monitoring: The 3500/42M 176449-02 supports multiple critical machinery measurements including radial vibration, axial position, and differential expansion across its four channels. This versatility eliminates the need for separate specialized modules, simplifying system architecture while providing comprehensive machinery health monitoring in a single component.
High-accuracy measurement: Equipped with precision signal conditioning and analog-to-digital conversion, the module delivers ±0.2% full-scale accuracy, ensuring reliable detection of even subtle vibration changes that may indicate emerging machinery issues. This precision is maintained across the entire 0.1 Hz to 10 kHz frequency range, capturing both low-frequency positional changes and high-frequency vibration components.
Configurable alarm logic: Each channel features independently programmable dual alarm levels (Alert and Danger) with configurable time delays and latching behavior. This flexibility allows users to implement multi-stage protection strategies tailored to specific machinery types and operating conditions, balancing protection sensitivity with operational availability.
Seamless transient integration: The module synchronizes with 133388-01 transient monitors to provide triggered data capture during alarm conditions. By sharing high-speed measurement data with transient systems, it ensures that pre-alarm and alarm condition data is preserved for detailed post-event analysis, supporting both protection system validation and root cause determination.
Typical application scenarios
In power generation turbine systems, 3500/42M 176449-02 modules form the backbone of machinery protection, monitoring radial vibration on turbine and generator bearings, axial thrust position, and rotor differential expansion. Installed in 125744-02 racks, they continuously analyze signals from proximity probes connected via 136711-01 cables, activating alarms or shutdown sequences when vibration exceeds predefined thresholds. Simultaneously, they provide continuous data to 133388-01 transient monitors for detailed analysis during startup/shutdown sequences.
Oil and gas processing facilities utilize 3500/42M 176449-02 modules to monitor critical rotating equipment such as centrifugal compressors and pumps. The module tracks bearing vibration, shaft position, and casing expansion, integrating with 125712-01 I/O modules to combine vibration data with process parameters. This integration enables operators to distinguish between machinery faults and process-induced vibrations, reducing false alarms while ensuring timely response to genuine mechanical issues.
Manufacturing plants deploy 3500/42M 176449-02 on production-critical motors, gearboxes, and turbines. The module provides continuous protection against catastrophic failures while feeding vibration trends to plant management systems via 140734-01 gateways. Maintenance teams use the historical data to schedule predictive maintenance activities, while the module’s alarm outputs integrate with plant control systems to prevent equipment damage during abnormal conditions.
BENTLY 3500/42M 176449-02
Related model recommendations
125744-02: Rack assembly that houses and powers the 3500/42M 176449-02 module.
133388-01: Transient monitor that captures high-speed data triggered by 3500/42M 176449-02 alarms.
136180-01: Configuration module that programs monitoring parameters for 3500/42M 176449-02.
136711-01: Vibration sensor cable providing input signals to 3500/42M 176449-02.
140734-01: Communication gateway that transmits data from 3500/42M 176449-02 to enterprise systems.
3500/60 163179-01: Display module that visualizes real-time data from 3500/42M 176449-02.
125712-01: I/O module whose process data complements 3500/42M 176449-02 measurements.
Installation, commissioning and maintenance instructions
Installation preparation: Before installing 3500/42M 176449-02, verify compatibility with the target 125744-02 rack firmware version and ensure two adjacent slots are available. Confirm the system power supply can accommodate the 10 W maximum load. Gather required tools including torque screwdriver, vibration calibrator, and configuration laptop with 3500 software. Inspect the module for shipping damage, particularly checking input connectors and backplane pins.
Maintenance suggestions: Include 3500/42M 176449-02 in quarterly system inspections, verifying status LEDs and communication links. Perform annual calibration using a certified vibration calibrator to maintain measurement accuracy. During scheduled maintenance, verify alarm setpoints and logic through 136180-01 configuration interfaces. Clean input connectors annually with approved electronic contact cleaner. Update firmware during major system upgrades to ensure compatibility with 133388-01 transient monitors and other system components.
Service and guarantee commitment
Bently Nevada provides the 3500/42M 176449-02 with a 36-month warranty covering manufacturing defects and performance issues under normal operating conditions, including measurement accuracy, alarm functionality, and communication capabilities. Our technical support team offers expert guidance on configuration, calibration procedures, and integration with 133388-01 transient monitors and other 3500 system components.
We offer specialized training on vibration analysis, module programming, and protection logic development specific to the 3500/42M 176449-02. Beyond the warranty period, our service agreements include calibration verification, technical support, and expedited replacement services to minimize system downtime. Bently Nevada’s commitment to quality ensures reliable performance throughout its operational lifecycle, backed by our global network of service professionals.
