{"product_id":"125800-02-bently-nevada-3500-25-isolated-keyphasor-i-o-module","title":"125800-02 Bently Nevada 3500\/25 Isolated Keyphasor I\/O Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-33 citation-end-33\"\u003eThe 125800-02 is a specialized interface component designed for the Bently Nevada 3500\/25 Enhanced Keyphasor system.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-32 citation-end-32\"\u003eIts primary role is to provide galvanic isolation for speed and phase signals, protecting the integrity of the monitoring rack from external electrical interference or ground loops.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eThis module is essential for translating raw pulses from shaft-sensing transducers—such as magnetic pickups or proximity probes—into digitized Keyphasor signals.\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-31 citation-end-31\"\u003eThese signals serve as the critical timing reference for vibration analysis, allowing the system to perform phase-locked measurements and accurately determine rotational speeds across a wide variety of industrial machinery.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eCore Hardware Parameters\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Number:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3500\/25\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Designation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e125800-02\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModule Function:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSignal Isolation and Keyphasor Processing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Integrity Level:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRated for SIL 1 to SIL 2 applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTermination Style:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eInternal Termination Support\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-30\"\u003e\u003c\/span\u003e\u003cstrong\u003eTransducer Compatibility:\u003c\/strong\u003e\u003cspan class=\"citation-30 citation-end-30\"\u003e\u003cspan\u003e \u003c\/span\u003ePrimarily magnetic pickups; proximity probes (requires external power source)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e454g (1.00 lbs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e24.1 cm x 2.4 cm x 10.3 cm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturing Locale:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUnited States (USA)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Application Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe 125800-02 Isolated I\/O Module is deployed in environments where precise timing data is mandatory for asset health monitoring. Typical installations include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVibration Phase Analysis:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProviding the \"Once-Per-Turn\" reference pulse necessary for plotting polar and Bode diagrams to diagnose shaft imbalances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRotational Speed Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCalculating high-precision RPM data for steam turbines, centrifugal compressors, and electric motors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElectrically Noisy Environments:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eImplementing isolation in plants with significant electromagnetic interference (EMI) to prevent signal distortion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Rack Synchronization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDistributing a single Keyphasor signal across multiple 3500 racks while maintaining electrical separation between systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of using an \"Isolated\" I\/O module like the 125800-02?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Isolation prevents ground loops and protects the 3500 monitor modules from high-voltage transients that may occur at the transducer site, ensuring more stable data and increased hardware longevity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the 125800-02 provide power to proximity probes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, this specific I\/O module does not provide power for proximity sensors. When using proximity probes as Keyphasor sources, an external power supply or a different I\/O configuration is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this module be installed in any slot of the 3500 rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The I\/O module must be installed in the backplane slot directly behind the corresponding 3500\/25 Keyphasor Monitor module to function correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the 125800-02 suitable for safety-instrumented systems?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, it is certified for use in SIL 1 and SIL 2 environments, making it appropriate for critical machinery protection loops where high reliability is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the typical warranty period for this Bently Nevada part?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: We offer a 12-month technical warranty on this brand-new, in-stock module, covering any operational defects under standard industrial use.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518820311213,"sku":"125800-02","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-125800-02-enhanced-keyphasor-module-dlqmz11d4cj.jpg?v=1766979513","url":"https:\/\/www.maxwellplc.com\/products\/125800-02-bently-nevada-3500-25-isolated-keyphasor-i-o-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}