Enhance Machinery Protection with the Bently Nevada 1900/27-03 Vibration Monitor Specification Details Inputs Compatible Transducers Bently Nevada 200150 and 190520 Accelerometers Input Sensitivity 100 mV/g Maximum Acceleration 20 g peak Maximum Differential Input Voltage 4 volts peak to peak Power AC/HDC Power Version AC Voltage 85 to 264 Vac DC Voltage 110 to 370 Vdc Current Draw 60 mA (typ.), 120 mA (max.) Frequency 47 Hz to 440 Hz, or DC Inrush Current 20A (typ.) @ Vin=100Vac, 40A (typ.) @ Vin=200Vac Overview of the Bently Nevada 1900/27-03 The Bently Nevada 1900/27-03 is a robust, single-channel vibration monitor specifically designed to enhance machinery protection. This stand-alone device is ideal for general-purpose or essential machinery applications, ensuring reliable performance and monitoring. It features a single transducer input compatible with Trendmaster® 2000 accelerometers, converting vibration data into peak velocity units for effective analysis. The monitor provides clear local displays, status indicators, and alarm relay outputs, making it easy to integrate into external systems. Its built-in 4-20 mA interface further simplifies the connection to plant control and automation systems for seamless trending and data analysis. Integration with the Trendmaster® 2000 System An outstanding feature of the 1900/27-03 is its compatibility with the Trendmaster® 2000 system through the optional Rack Buffered Output Transducer Interface Module (TIM). This integration enables users to extend vibration monitoring and protection to all, or specific, seismic vibration points within the Trendmaster® 2000 system. This versatility makes the device an excellent choice for facilities looking to implement or enhance comprehensive machinery protection. Best Practices for Housing Measurements When using the 1900/27-03 for housing measurements, it’s crucial to evaluate the relevance and effectiveness of the measurement for each specific application. Many common machinery issues, such as imbalance or misalignment, originate at the rotor and lead to increased rotor vibration. For housing measurements to be meaningful, rotor vibrations must effectively transfer to the bearing housing or casing, particularly at the transducer mounting location. Proper evaluation and strategic placement ensure that the collected data accurately represents the machinery's performance and provides meaningful insights for preventive maintenance. Importance of Proper Transducer Installation A critical aspect of ensuring the reliability of the 1900/27-03 lies in the correct physical installation of the transducer. Improper installation can diminish the amplitude and frequency response of the transducer, resulting in inaccurate readings. Worse, it may even produce misleading signals that do not reflect actual machine vibration. Careful attention to mounting techniques, location selection, and adherence to installation guidelines are essential...
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