Product Overview

The Bently Nevada 1900/65, identified by part number 167707-01, is a high-performance, standalone machinery protection system designed for "Balance of Plant" assets. This versatile monitor provides a comprehensive solution for equipment that requires continuous surveillance but does not justify the cost of a large, rack-based system. The 1900/65 excels at aggregating multiple sensor types—including vibration, position, and temperature—into a single, compact unit. By delivering real-time processing and automated relay logic, it ensures that critical industrial machinery is shielded from damage due to mechanical imbalance, thermal overload, or bearing failure. Its ability to provide both local alarm capabilities and 4-20 mA signals for DCS integration makes it a cornerstone of modern predictive maintenance.

Hardware Parameters and Monitoring Capabilities

The 167707-01 is engineered for flexibility, supporting a wide array of transducer inputs and providing multiple output formats for control system interfacing.

• Model Number 1900/65

• Order Number 167707-01

• Dynamic Inputs 4 channels (Compatible with Accelerometers, Velocity Sensors, and Proximity Probes)

• Static Inputs 4 channels (Compatible with RTDs and Type E, J, K, and T Thermocouples)

• Analog Outputs 4 dedicated 4-20 mA recorder outputs (Proportional to measured variables)

• Relay Outputs 6 programmable relays (Integrated Alert/Danger and "Not OK" status)

• Buffered Signal 4 dedicated BNC connectors (Allows raw data access for FFT analysis)

• Communication Modbus RTU via RS485/RS232 for digital data transfer

• Power Requirements 18 to 36 Vdc (Standard 24V industrial supply)

• Mounting Standard 35mm DIN-rail or bulkhead mounting options

• Configuration PC-based software via local serial port

Operational Use Cases and Industrial Applications

The 1900/65 167707-01 is specifically designed for the protection of essential rotating and reciprocating machinery across various sectors.

• Industrial Pumps and Motors Continuous monitoring of casing vibration and winding temperatures to detect early-stage bearing wear or electrical overheating.

• Small Air Compressors Tracking radial vibration and discharge temperatures to prevent mechanical failure during high-demand cycles.

• Cooling Tower Fans Reliable protection in high-moisture environments, providing automated trips for excessive fan unbalance.

• Centrifuges and Blowers Ideal for high-speed equipment where sudden vibration spikes require rapid relay intervention to avoid catastrophic damage.

• Decoupled Protection Systems Used as a secondary, independent safety layer for machinery already connected to a plant-wide DCS, ensuring "always-on" hardware-based trip logic.

By utilizing the buffered outputs, maintenance personnel can connect portable analyzers to perform root-cause analysis without disturbing the primary monitoring functions, significantly enhancing the diagnostic capabilities of any maintenance program.