Description
The Bently Nevada 1900/65A is a versatile, flexible monitor designed to provide continuous protection and monitoring for essential and general-purpose machinery. It is part of the 1900 series and is specifically engineered to handle vibration, temperature, and other sensor inputs in a compact, standalone package.
Product Parameters (Datasheet)
- Model Number: 1900/65A
- Input Channels: 8 Channels (6 Vibration/Position + 2 Temperature)
- Vibration Inputs: Accelerometers, Velomitors, or Proximitor sensors
- Temperature Inputs: RTDs (100 ohm Platinum) or Thermocouples (Type J/K)
- Output Relays: 6 Integrated Relays (Configurable for Alert/Danger)
- Analog Outputs: 4 Configurable 4-20 mA outputs
- Display: Integrated backlit LCD for real-time value tracking and status
- Power Supply: 110/220 V AC or 24 V DC (Model dependent)
- Communication: Modbus RTU (RS-485) standard for SCADA/PLC integration
- Configuration: Via 1900 Configuration Software (Serial connection)
BENTLY 1900/65A-01-01-01-00-00
BENTLY 1900/65A-01-01-01-00-00
BENTLY 1900/65A-01-01-01-00-00
Country of Origin
This monitoring system is designed and manufactured by Bently Nevada (a Baker Hughes company) in the USA, maintaining the highest standards for machinery protection.
Application Fields
The 1900/65A is the ideal solution for balancing cost and protection for non-critical “balance of plant” equipment:
- Cooling Tower Fans: Monitoring for imbalance and bearing failure.
- Centrifugal Pumps: Tracking vibration and motor temperature.
- Air Compressors: Protecting against surge and mechanical wear.
- Small Steam Turbines: Providing basic overspeed and vibration shutdown.
- Electric Motors: Monitoring stator temperatures and housing vibration.
Product Usage Instructions
- Mounting: The unit can be DIN-rail mounted or bulkhead mounted in a local weatherproof enclosure near the machine.
- Sensor Connection: Wire the vibration transducers and RTDs to the designated terminal blocks. Ensure shielded cables are used to prevent EMI interference.
- Relay Logic: Configure the voting logic (e.g., 1oo2, 2oo2) for the Alert and Danger setpoints to ensure the machine trips only under genuine fault conditions.
- Analog Integration: Map the 4-20 mA outputs to your plant PLC or DCS for remote trending and historical data logging.
- Software Setup: Use the 1900 Configuration software to define sensor scale factors, alarm time delays, and Modbus registers.
Product Technical Description
The 1900/65A acts as a standalone “mini-system.” Unlike the large 3500 racks, the 1900/65A is autonomous, containing its own power supply, signal conditioning, and relay logic in one unit. It utilizes high-speed digital signal processing to calculate overall vibration levels and detect “gap” voltage for proximity probes. The inclusion of temperature channels allows for a more holistic view of machine health, combining mechanical vibration data with thermal status. Its Modbus capabilities ensure that while it operates independently, it remains a fully integrated part of the plant-wide Asset Management system.
Q&A (Common Questions)
Q: Can I use the 1900/65A for high-speed turbomachinery? A: Yes, it is suitable for smaller turbines and compressors. However, for large, highly critical turbines (API 670 compliance), the Bently Nevada 3500 series is usually preferred.
Q: Does it support buffered outputs for portable vibration analyzers? A: Yes, the 1900/65A provides buffered “Raw Data” outputs on the front panel (BNC connectors) for connection to external diagnostic equipment like the Scout or ADRE systems.
Q: What is the difference between the 1900/65 and the 1900/65A? A: The “A” version is an enhanced revision featuring improved internal hardware, more flexible relay configurations, and expanded Modbus register support.
Q: Is the unit rated for hazardous areas? A: The 1900/65A is available with Class I, Div 2 / ATEX Zone 2 certifications when installed in an appropriate secondary enclosure.
Similar Model Recommendations
- Bently Nevada 1900/55 (Earlier version of the monitor)
- Bently Nevada 3500/42M (Proximitor Monitor for large racks)
- Bently Nevada 2300/20 (Simplified dual-channel vibration monitor)
- Bently Nevada 3300 XL (Compatible Proximity Probe series)
- Bently Nevada 1900/65A-01-01-01 (Common configuration variant)
For technical support or a quotation on the Bently Nevada 1900/65A, please contact our machinery protection specialists.
