{"product_id":"149369-01-bently-nevada-phase-reference-vibration-analysis","title":"149369-01 Bently Nevada Phase Reference Vibration Analysis","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 3500\/25 (Part Number 149369-01)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as the \"heartbeat\" of the 3500 Machinery Protection System. This Enhanced Keyphasor Module provides essential phase reference signals and rotational speed data by interfacing directly with proximity probes or magnetic pickups. It enables synchronous data acquisition for every other monitor in the rack, allowing for precise vibration vector analysis and diagnostic balancing. We supply this module as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% brand new and original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein factory packaging to ensure mission-critical timing accuracy for your turbines and compressors.\u003c\/p\u003e\n\u003ch3\u003ePart Number Breakdown: 3500\/25-AA-BB-CC\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e01 (AA):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDual-channel Keyphasor Module (supports two independent Keyphasor signals).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e01 (BB):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eI\/O Module with Internal Terminations and Internal Barriers (enables direct sensor connection in hazardous areas).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e00 (CC):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStandard Agency Approval (UL\/CSA\/CE compliant).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e149369-01:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRepresents the specific hardware assembly for the Enhanced I\/O module with internal safety barriers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3500\/25 Enhanced Keyphasor\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e149369-01\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Signals\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAccepts up to 2 Keyphasor signals per module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Source\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProximity Transducers or Magnetic Pickups\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Capability\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProvides 4 Keyphasor signals to the backplane\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSafety Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eInternal Barriers for Hazardous Area Wiring\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e500 Vdc Galvanic Isolation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-30°C to +65°C (-22°F to +150°F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e241.3 mm x 24.4 mm x 241.8 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.46 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Phase Synchronization\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 149369-01 conditions raw pulses into a digital phase reference. It then distributes this signal across the 3500 rack backplane. This allows vibration monitors to filter signals to \"1X\" or \"2X\" rotational frequency, which identifies the exact angular position of mechanical heavy spots during rotor balancing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Safety Barriers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis specific I\/O configuration (149369-01) includes built-in internal barriers. These eliminate the need for external zener barriers or galvanic isolators when wiring transducers located in Class I, Div 1 or Zone 0 hazardous environments. This reduces cabinet complexity, saves rail space, and lowers installation costs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Resolution Speed Measurement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module tracks shaft speed with extreme precision, supporting both multi-event wheels and single-event keyways. It calculates rotor acceleration and detects zero-speed or overspeed conditions faster than standard PLC-based tachometers, providing an immediate layer of mechanical protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnhanced Diagnostic Throughput\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \"Enhanced\" version of the 3500\/25 allows the rack to support more than two Keyphasor signals simultaneously. This is critical for complex machine trains—such as a gas turbine driving multiple compressor stages—where each shaft may rotate at different speeds or require independent phase references.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 3500\/25 handle \"noise\" on the Keyphasor signal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module utilizes adjustable threshold and hysteresis settings. You configure these via the 3500 Rack Configuration Software to ensure the module only triggers on the actual keyway or event mark, ignoring electronic interference or shaft scratches that cause \"false pulses.\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I install the 149369-01 in any slot of the 3500 rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou must install the 3500\/25 in the dedicated Keyphasor slots (usually located next to the Power Supplies). Once installed, the module automatically makes its timing signals available to all other monitors in the rack via the backplane.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the standard 3500\/25 and the Enhanced version?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Enhanced 3500\/25 (149369-01) provides improved signal processing and allows the 3500 system to accept more Keyphasor inputs globally. It also offers better compatibility with modern System 1* diagnostic software for advanced transient data collection during machine startups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module provide power to the proximity probes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 149369-01 provides the necessary negative voltage (typically -24Vdc) required to power Bently Nevada 3300 XL proximity transducers, simplifying field wiring by acting as both a power source and a signal conditioner.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":43790588969059,"sku":"3500\/25 149369-01","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/241_854099c5-2528-4757-9af0-f4427d52d5f6.jpg?v=1761188672","url":"https:\/\/www.autocontrolglobal.com\/products\/149369-01-bently-nevada-phase-reference-vibration-analysis","provider":"AutoControl Global","version":"1.0","type":"link"}