Bently 1900/65A 172323-01 Universal Equipment Monitor

Technical Specifications

• Product Model: 1900/65A
• Part Number: 172323-01
• Manufacturer: Bently Nevada (GE)
• Function Modules: Dual-channel vibration/displacement monitoring with alarm outputs
• Sensor Support: Compatible with accelerometers, velocity probes, and eddy current sensors
• Communication Interface: Modbus RTU (RS-485)
• Alarm Outputs: Configurable relay outputs (Danger & Alert)
• Installation Methods: DIN rail or panel mounting, supporting compact layouts
• Operating Temperature Range: -40°C to +70°C
• Power Supply: 24VDC or 115/230VAC (dual power supply options)
• Frequency Range:
  • Displacement: 1–1000Hz
  • Velocity: 10–1000Hz
  • Acceleration: 10–10000Hz
• Measurement Accuracy: ±1% full scale
• Output Signals:
  • Six relay outputs for alarm and control
  • Four 4-20mA recorder outputs for data recording and monitoring
  • One dedicated buffer output for each sensor input

Functional Features

• High Precision Monitoring: Provides accurate vibration displacement, velocity, and acceleration measurements with unit switching between micrometers, mm/s, and g.
• Dual-Channel Independent Monitoring: Supports simultaneous connection of two vibration sensors for comprehensive monitoring.
• Two-Level Alarming: Each channel can independently set Alert and Danger thresholds with configurable delays (0.1–30 seconds) to avoid false alarms from transient interference.
• Flexible Output Configuration: Relay outputs can be programmed based on the OK, Alert, and Danger states of any channel or combination of channels.
• Modbus Communication: Supports Modbus/Modbus TCP and RS-485, enabling integration with factory automation networks.
• Easy Configuration: Uses 1900 Configuration software to define monitor operations and Modbus gateway register mappings, with configuration files downloadable via built-in Ethernet.
• Optional Display/Keyboard: Supports viewing channel information and making minor configuration changes, allowing operation as a standalone package with display installation up to 75 meters (250 feet) from the monitor module.

Application Scenarios

• Pump Monitoring: Monitors the operating status of pump bearings, impellers, or couplings, commonly used in centrifugal pumps and vacuum pumps in the petroleum, chemical, paper, and metallurgical industries.
• Fan and Blower Systems: Detects vibration anomalies, imbalance, and misalignment in cooling tower fans, industrial air supply systems, and power plant induced draft fans.
• Compressor Monitoring: Identifies bearing wear, shock loads, and mechanical looseness in small and medium-sized air compressors and refrigeration compression systems.
• Motor and Generator Monitoring: Provides online monitoring of motor bearings and rotor status to prevent early failures, widely deployed in hydropower, thermal power plants, and large industrial sites.
• Gearbox and Transmission System Monitoring: Detects abnormal gear meshing, insufficient lubrication, and fatigue damage in equipment such as cranes, conveyors, and rolling mills.
• Light Machinery Protection Systems: Offers standalone “monitoring + alarm protection” functions for small and medium-sized equipment without DCS or large-scale condition monitoring systems, ideal for cost-sensitive applications.