Bently Nevada 176449-05 3500/64 Pressure Monitor

This dynamic pressure monitor provides continuous measurement of transient pressure variations in rotating equipment. It detects pulsations and surges that may indicate impending mechanical failures. The 176449-05 3500/64 supports up to four dynamic pressure channels in a single module.

Core Measurement Specifications

The module accepts inputs from piezoelectric or piezoresistive dynamic pressure transducers. Each channel handles frequency ranges from 0.1 Hz to 10 kHz for comprehensive monitoring. Furthermore, the unit provides 24-bit resolution for exceptional signal detail and accuracy. It offers selectable input ranges from ±1 V to ±10 V for transducer compatibility. The monitor includes a built-in integrator for converting acceleration signals to velocity outputs.

Connectivity and Signal Processing

The front panel provides four BNC connectors for direct transducer connections. These connectors support both differential and single-ended input configurations. Additionally, the 176449-05 3500/64 includes a 20-pin terminal block for alarm and relay outputs. Each channel features a dedicated LED bar graph for real-time amplitude visualization. Engineers can configure scaling and alarm setpoints via the 3500 configuration software.

Alarm Features and Fault Detection

The module includes four independent alarm outputs per channel for flexible protection. Each alarm can trigger at programmable amplitude or rate-of-change thresholds. Furthermore, the 176449-05 3500/64 offers time-delayed alarm latching to avoid nuisance trips. The unit continuously performs self-diagnostics on signal integrity and transducer health. It provides a relay output for system-wide fault indication.

Mechanical Specifications and Environmental Compliance

The module measures 24.1 x 5.2 x 4.5 centimeters and weighs approximately 0.8 kilograms. Its compact half-height design occupies a single slot in the 3500 rack. The operating temperature range spans -20°C to +65°C for harsh environments. Moreover, the 176449-05 3500/64 meets API 670 machinery protection standards.

Technical Parameters Summary

Parameter	Specification
Model	Bently Nevada 176449-05 3500/64
Input Channels	4 x dynamic pressure
Transducer Types	Piezoelectric, piezoresistive
Frequency Range	0.1 Hz to 10 kHz per channel
Resolution	24 bits
Input Ranges	±1 V, ±5 V, ±10 V (selectable)
Integration	Built-in accelerometer to velocity
Channel Connectors	4 x BNC
Alarm/Relay Connector	20-pin terminal block
Alarm Outputs	4 per channel (programmable)
Alarm Latching	Time-delayed, programmable
Visual Indicator	LED bar graph per channel
Self-Diagnostics	Continuous signal integrity check
Fault Relay	1 x Form C output
Configuration	3500 software
Dimensions (W x H x D)	24.1 x 5.2 x 4.5 cm
Weight	0.8 kg
Operating Temperature	-20°C to +65°C
Standard Compliance	API 670

System Integration and Application Areas

This monitor integrates seamlessly with the Bently Nevada 3500 rack platform. It communicates with the system’s main processor for data logging and alarm annunciation. The module’s high-frequency response suits steam turbines, compressors, and pumps effectively. Industries such as oil refineries, power plants, and chemical processing rely on its protection capabilities.

Summary

The 176449-05 3500/64 delivers accurate dynamic pressure monitoring for critical rotating equipment. Its high resolution, flexible alarming, and robust diagnostics ensure dependable machine protection. This module provides essential surveillance for hydraulic instability and surge events.