The Bently Nevada 3500/72 176449-08 Recip Rod Position Monitor is a dedicated monitoring module from the Bently Nevada 3500 Machinery Protection System, specifically designed to measure and analyze the position of reciprocating machinery rods. Reciprocating compressors, pumps, and engines rely on precise rod motion for efficient operation. Any deviation in rod position can indicate wear, misalignment, or potential failure.

The 3500/72 provides accurate real-time data on rod drop and rod position, enabling operators to implement predictive maintenance strategies and avoid unplanned downtime. With its seamless integration into the 3500 rack system, it delivers high reliability, advanced diagnostics, and compatibility with a wide range of transducers for comprehensive machinery protection.

Product Specifications

Product Applications

The 3500/72 Recip Rod Position Monitor is widely used across industries that rely on reciprocating machinery. Its applications include:

• Oil & Gas – Monitoring reciprocating compressors in pipeline stations and refineries.

• Petrochemical Plants – Ensuring reliable operation of large reciprocating pumps and compressors.

• Power Generation – Used in auxiliary reciprocating equipment for continuous monitoring.

• Marine & Offshore – Monitoring engine rod position in large vessels to prevent rod failure.

• Chemical Industry – Enhancing the performance and safety of reciprocating machinery in production processes.

• Industrial Equipment – Monitoring critical reciprocating machinery in heavy-duty industrial operations.

Product Advantages

• Specialized Monitoring – Purpose-built for reciprocating rod position and drop detection.

• Early Fault Detection – Identifies rod wear, misalignment, and potential failure before they become critical.

• Flexible Sensor Support – Compatible with proximity probes and LVDTs for versatile applications.

• Accurate Diagnostics – ±0.5% full-scale accuracy ensures reliable measurement results.

• Integrated Alarms – Provides multiple configurable alarm types to alert operators to abnormal rod motion.

• Seamless System Integration – Works natively with other 3500 modules for centralized monitoring.

• Rugged Design – Designed to operate in harsh industrial environments with high reliability.

• Supports Predictive Maintenance – Helps reduce unplanned downtime by enabling condition-based maintenance.

FAQ

1. How many channels are available on the 3500/72 module?

   It provides two independent monitoring channels.

2. Which sensors are compatible with this module?

   It supports Bently Nevada proximity probes and LVDTs designed for rod position measurement.

3. What is the typical frequency response of the module?

   DC to 10 Hz, optimized for slow reciprocating rod motion.

4. Does the module support configurable alarms?

   Yes, it includes Alert, Danger, and Rod Drop limit alarms.

5. What type of input signals can be used?

   ±20 V input signals from supported transducers.

6. Is the module capable of detecting both rod position and rod drop?

   Yes, it can measure rod position, rod drop, and provide alarms for abnormal conditions.

7. Can the 3500/72 be used in combination with other 3500 modules?

   Yes, it integrates seamlessly with the entire 3500 rack system.

8. How accurate is the measurement?

   ±0.5% of the full-scale range.

9. What is the primary function of rod drop monitoring?

   To detect excessive wear or misalignment of reciprocating rods before mechanical failure occurs.

10. Does the module provide conditioned outputs for external systems?

    Yes, the 3500/72 outputs conditioned signals via the backplane for use in displays and system communications.