{"product_id":"bently-nevada-77581-02-digital-vector-filter-3-data-acquisition-instrument","title":"Bently Nevada 77581-02 Digital Vector Filter 3 Data Acquisition Instrument","description":"\u003ch2\u003eBently Nevada 77581-02 Digital Vector Filter 3 Data Acquisition Instrument\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 77581-02\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e77581-02\u003c\/strong\u003e Digital Vector Filter 3 Data Acquisition Instrument, operates as a dedicated hardware component for vibration vector measurement and transient rotor analysis within Bently Nevada machinery monitoring platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e77581-02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDigital Vector Filter 3 Data Acquisition Instrument\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eDigital Vector Filter 3 (DVF 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 18.1 kg (40 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProximitor Power Supply\u003c\/td\u003e\n\u003ctd\u003e18 VDC and 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Input Channels\u003c\/td\u003e\n\u003ctd\u003e2 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeyphasor Input\u003c\/td\u003e\n\u003ctd\u003e1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Transducers\u003c\/td\u003e\n\u003ctd\u003eDisplacement, proximity, velocity, or acceleration transducers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Speed Range\u003c\/td\u003e\n\u003ctd\u003e50 to 100,000 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTracking Filter Bandwidth\u003c\/td\u003e\n\u003ctd\u003eAdjustable from 12 to 120 cpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlotter Output\u003c\/td\u003e\n\u003ctd\u003eSupports two digital plotters simultaneously\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Function\u003c\/td\u003e\n\u003ctd\u003eTwo-channel alphanumeric display with menu-driven configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Units\u003c\/td\u003e\n\u003ctd\u003eMetric and English selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Analysis\u003c\/td\u003e\n\u003ctd\u003eBodé plots, Polar plots, Sweep Frequency plots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Processing Function\u003c\/td\u003e\n\u003ctd\u003eAutomatic signal sweeping and vector hold function\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eRotor Dynamics Signal Processing and TSI Measurement Features\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada 77581-02 Digital Vector Filter 3 processes vibration amplitude and phase signals from rotating machinery measurement channels. Moreover, the instrument integrates Keyphasor reference input processing to establish shaft rotational position and phase relationship during dynamic analysis.\u003c\/p\u003e\n\u003cp\u003eThe module supports rotor response evaluation through vector measurement methods. Therefore, technicians can analyze runup, coastdown, balancing conditions, and shaft behavior across variable operating speeds.\u003c\/p\u003e\n\u003cp\u003eThe DVF 3 architecture supports Bently Nevada TSI measurement principles by maintaining accurate phase reference tracking between proximity probe signals and shaft rotational markers. In addition, the system applies signal conditioning techniques to minimize measurement errors caused by unwanted signal interaction during vibration acquisition.\u003c\/p\u003e\n\u003cp\u003eThe instrument interface supports proximity-based measurement systems using eddy-current probe scaling methods. Furthermore, gap voltage validation procedures can reference standard Bently Nevada proximity probe operating conditions, including typical -10 VDC gap voltage targets for correct probe positioning.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many vibration measurement channels does the Bently Nevada 77581-02 support?\u003cbr\u003eA: The instrument provides two vibration input channels for displacement, proximity, velocity, or acceleration transducer signals.\u003c\/p\u003e\n\u003cp\u003eQ: What is the function of the Keyphasor input on the 77581-02?\u003cbr\u003eA: The Keyphasor input receives once-per-revolution shaft reference pulses from proximity probes, optical pickups, or strobe-based sources to calculate phase information.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 77581-02 drive external plotting equipment?\u003cbr\u003eA: Yes. The unit includes output capability for two digital plotters operating simultaneously.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 77581-02 in a protected industrial instrumentation environment with suitable mechanical support and electrical grounding.\u003c\/p\u003e\n\u003cp\u003eConnect vibration transducer wiring using shielded cables to reduce electromagnetic interference during signal acquisition. Ground cable shields according to the machinery monitoring system installation standard and avoid parallel routing with high-current power conductors.\u003c\/p\u003e\n\u003cp\u003eVerify proximity probe connections before operation. Check probe polarity, signal continuity, and gap voltage conditions to maintain correct shaft displacement measurement.\u003c\/p\u003e\n\u003cp\u003eRoute the Keyphasor signal separately from high-noise switching circuits when possible. Confirm the rotational reference pulse quality before performing vector analysis, balancing operations, or transient measurements.\u003c\/p\u003e\n\u003cp\u003eMaintain adequate ventilation around the instrument enclosure and follow the original Bently Nevada installation documentation for mounting, wiring, and commissioning procedures.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44372317831256,"sku":"77581-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/77581-02-3.jpg?v=1783938332","url":"https:\/\/www.industriaxplc.com\/id\/products\/bently-nevada-77581-02-digital-vector-filter-3-data-acquisition-instrument","provider":"IndustriaX Limited","version":"1.0","type":"link"}