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Product Introduction
The Bently Nevada 3500/45 176449-04 + 135137-01 Position Monitor is a high-precision module designed to continuously monitor axial shaft position, thrust position, and rod position in critical rotating machinery. Part of the 3500 Series Machinery Protection System, this module ensures early detection of axial displacement, misalignment, or thrust bearing wear, preventing potential equipment damage or operational downtime.
Equipped with advanced digital signal processing, the module provides accurate, high-resolution measurements and configurable alarm logic. Integration with the 3500 rack allows centralized data acquisition and real-time monitoring, supporting predictive maintenance programs. The 3500/45 176449-04 + 135137-01 is widely used in power generation, petrochemical, oil and gas, and other industrial sectors where precise position monitoring is essential for safety and efficiency.
Product Specifications
| Parameter | Description |
|---|---|
| Model Number | 3500/45 176449-04 + 135137-01 |
| Series | Bently Nevada 3500 Machinery Protection System |
| Measurement Type | Axial shaft position, rod position, thrust position |
| Number of Channels | 2 or 4 channels |
| Supported Sensors | Proximity probes, eddy current transducers |
| Signal Processing | Direct position measurement with programmable alarm thresholds |
| Measurement Range | ±2 mm to ±5 mm (sensor dependent) |
| Frequency Response | DC to 10 kHz |
| Resolution | Micrometer-level (sensor dependent) |
| Dynamic Range | > 80 dB |
| Sampling Rate | Up to 1024 samples per channel per second |
| Alarm Types | Alert and Danger, independently programmable |
| Outputs | 4–20 mA proportional output, relay contacts, buffered outputs |
| Communication Interface | Compatible with 3500 rack network |
| Operating Temperature | -30°C to +65°C |
| Power Supply | Via 3500 rack backplane |
| Dimensions | 241.3 x 24.4 x 241.8 mm |
| Weight | 0.91 kg |
| Mounting | Plug-in module for 3500 rack |
| Certifications | CE, CSA, ATEX, IECEx (depending on configuration) |
Product Applications
The 3500/45 176449-04 + 135137-01 Position Monitor is used in various industrial machinery protection applications:
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Steam Turbines – Continuous axial thrust monitoring to prevent bearing overload.
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Gas Turbines – Ensures shaft remains within safe operational limits by monitoring displacement.
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Centrifugal Compressors – Protects against axial drift due to process instability.
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Reciprocating Compressors – Measures rod and crosshead positions to detect alignment or wear issues.
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Industrial Pumps – Monitors axial displacement to avoid seal and bearing failure.
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Gearboxes – Tracks axial shaft position to detect early-stage gear misalignment or wear.
Product Advantages
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High Accuracy – Micrometer-level measurement for critical machinery protection.
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Flexible Sensor Compatibility – Works with Bently Nevada proximity probes and eddy current transducers.
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Configurable Alarm Logic – Independent Alert and Danger setpoints for proactive protection.
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Seamless Integration – Compatible with 3500 rack system for centralized monitoring and data collection.
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Rugged Design – Reliable in high-vibration and high-temperature industrial environments.
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Predictive Maintenance Support – Provides real-time and trend data to aid maintenance planning.
FAQ
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What measurements does the 3500/45 176449-04 + 135137-01 module perform?
It measures axial shaft displacement, rod position, and thrust position to protect critical machinery. -
Which sensors are compatible with this module?
It supports Bently Nevada proximity probes and eddy current transducers. -
Can it monitor both static and dynamic axial movements?
Yes, it captures both slow drift and rapid axial displacement events. -
How are alarm thresholds configured?
Alert and Danger thresholds are independently programmable through 3500 Configuration Software. -
What is the module’s maximum frequency response?
DC to 10 kHz, depending on the connected sensor type. -
Does it provide proportional outputs?
Yes, 4–20 mA outputs correspond to the measured position. -
Is buffered output available for portable analyzers?
Yes, buffered outputs allow analyzer connection without interrupting monitoring. -
Can this module be hot-swapped?
Yes, it can be replaced without powering down the 3500 rack. -
Is the module certified for hazardous areas?
Yes, with appropriate configuration it meets ATEX, IECEx, and CSA standards. -
What is the maximum sampling rate per channel?
Up to 1024 samples per channel per second for high-resolution monitoring.
Related Models (Same Series or Compatible)
| Model | Description |
|---|---|
| 3500/40M | Proximitor Monitor for radial vibration and shaft position. |
| 3500/42E | Vibration Monitor for radial, thrust, and shaft vibration. |
| 3500/44M | Aeroderivative Gas Turbine Vibration Monitor. |
| 3500/46M | Hydro Monitor for hydroelectric turbine vibration. |
| 3500/50 | Tachometer Module for speed measurement. |
| 3500/60 | Temperature Monitor for bearing and casing temperatures. |
Popular Bently Nevada Models
| Model | Description |
|---|---|
| 3500/15 | Power Supply Module for 3500 rack systems. |
| 3500/20 | Rack Interface Module for communication and system integration. |
| 3500/25 | Keyphasor Module for phase reference signals. |
| 3500/32M | Relay Module for alarm logic and output control. |
| 3500/65 | Velocity Monitor for casing-mounted vibration sensors. |
| 3500/77M | Recovery Delay Module for alarm management and timing logic. |
