{"product_id":"1900-55-bently-nevada-1900-series-fan-monitor","title":"1900\/55 Bently Nevada 1900 Series Fan Monitor","description":"\u003cp\u003eConfigured for continuous vibration monitoring in auxiliary machinery, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 1900\/55\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1900\/55\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFan Monitor) provides direct physical\/electrical execution. This device processes input signals from vibration sensors to deliver real-time monitoring of fan mechanical health. The monitor features programmable alarm logic and standard 4-20 mA outputs, enabling integration with plant control systems for automated threshold detection and machinery protection based on monitored vibration levels.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1900\/55\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.32 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e19.8 cm x 15.0 cm x 11.0 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-20 deg C to +70 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt;= 15 W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFrequency Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 Hz to 1 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eAccuracy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e+\/- 1% of full scale\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSignal Isolation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1500 VAC (Input\/Output)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMechanical Monitoring and Rotor Dynamics\u003c\/h3\u003e\n\u003cp\u003eThe 1900\/55 monitor utilizes dedicated signal conditioning to analyze rotor dynamics and vibration profiles. Maintaining high signal integrity requires accurate eddy-current probe scaling if used in conjunction with non-contacting sensors, or standard velocity\/acceleration scaling for seismic sensors. Calibration must be performed to ensure gap voltage validation (-10 VDC targets where applicable) matches the transducer’s linear range. Effective cross-talk suppression is achieved through proper grounding and cable routing, preventing electromagnetic interference from contaminating the mechanical vibration signature during machine operation.\u003c\/p\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1 1900\/55 Fan Monitor unit\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 Terminal block connector set\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 Technical operations and installation manual\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Environment\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eMount the monitor in a protected enclosure, adhering to the specified operating temperature range of -20 deg C to +70 deg C.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure the mounting surface provides sufficient vibration resistance, tested to 5g at 10-500 Hz.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring and Termination\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eUtilize shielded twisted-pair cables for input signals to minimize noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConnect the 90-250 VAC power supply to the labeled terminals, ensuring a proper protective earth (PE) connection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTerminate 4-20 mA outputs to the corresponding control system inputs, maintaining isolation as per the 1500 VAC specification.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eIs the 1900\/55 monitor hot-swappable?\u003c\/p\u003e\n\u003cp\u003eNo, this device is not designed for hot-swapping. The power must be disconnected before the unit is removed from its mounting location.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the alarm thresholds be adjusted via software?\u003c\/p\u003e\n\u003cp\u003eYes, the device features programmable alarm outputs that can be configured through the internal interface to match specific machine requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does the monitor handle power loss?\u003c\/p\u003e\n\u003cp\u003eUpon loss of power, the alarm relays will de-energize to a fail-safe state, and the 4-20 mA output will fall to 0 mA.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs the 4-20 mA output loop-powered or externally powered?\u003c\/p\u003e\n\u003cp\u003eThe output is an active signal provided by the monitor, requiring the receiving input card to be configured for a voltage or current loop.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the response time of the alarm outputs?\u003c\/p\u003e\n\u003cp\u003eThe response time is governed by the programmed alarm delay settings, which are adjustable to prevent false alarms due to transient spikes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the unit be calibrated in the field?\u003c\/p\u003e\n\u003cp\u003eYes, the monitor supports field calibration by injecting a known signal and adjusting the software-defined gain to align with the scale.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the effect of exceeding the 1 kHz frequency range?\u003c\/p\u003e\n\u003cp\u003eSignals above 1 kHz will be attenuated by the internal anti-aliasing filters, rendering the output inaccurate for high-frequency components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this monitor support remote communication?\u003c\/p\u003e\n\u003cp\u003eThe 1900\/55 is primarily a standalone monitoring device and does not support complex digital networking protocols like Modbus or Ethernet.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46026835427501,"sku":"1900\/55","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/190055-01-01-01-00-4.jpg?v=1782785735","url":"https:\/\/www.maxwellplc.com\/products\/1900-55-bently-nevada-1900-series-fan-monitor","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}