{"product_id":"bently-nevada-125800-02-3500-series-keyphasor-i-o-module","title":"Bently Nevada 125800-02 3500 Series Keyphasor I\/O Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 125800-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-integrity I\/O module specifically engineered for the 3500\/25 Keyphasor system. It provides the essential physical interface between phase reference transducers and the 3500 monitoring rack. This module accepts input signals from proximity probes or magnetic pickups to provide once-per-turn timing pulses, which are critical for calculating vector parameters, shaft speed, and phase angles. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estock, ensuring your diagnostic system maintains the highest pulse-detection accuracy.\u003c\/p\u003e\n\u003ch3\u003ePart Number Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe 125800 series defines the termination and isolation characteristics for Keyphasor inputs:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTermination Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication Logic\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e125800-01\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eInternal Termination\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStandard direct-wire applications\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e125800-02\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eExternal Termination\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHigh-density cabinets utilizing external terminal blocks\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e149369-01\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTMR Internal\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTriple Modular Redundant configurations\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 125800-02 utilizes precision circuitry to handle high-speed pulse signals without edge degradation:\u003c\/p\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\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada (Baker Hughes)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e125800-02\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eKeyphasor I\/O Module (External Termination)\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\u003e22.9 cm x 5.1 cm x 10.2 cm\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\u003e0.4 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\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\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3500\/25 Keyphasor Monitor\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Input\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProximity Transducers \/ Magnetic Pickups\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100% Brand New Original\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\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Phase Referencing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 125800-02 delivers ultra-sharp pulse processing. It accurately captures the trigger edge even at high RPMs, allowing the 3500 system to calculate synchronous vibration data (1X, 2X) with minimal phase error.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExternal Termination Flexibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis \"-02\" variant supports external termination. It allows engineers to route field wiring to a separate terminal strip, simplifying rack-side maintenance and reducing cable stress within narrow control cabinets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEMI\/RFI Signal Hardening:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module employs advanced filtering to reject electrical noise generated by nearby Variable Frequency Drives (VFDs). This prevents \"ghost pulses\" or false speed readings that could otherwise trigger an accidental machinery trip.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHot-Swappable Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 3500 architecture allows for the replacement of the 125800-02 without powering down the entire rack. This capability ensures continuous machinery protection and data acquisition during routine maintenance intervals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRuggedized USA Build Quality:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eManufactured in the USA, this module features gold-plated backplane connectors and industrial-grade components. It withstands the sustained thermal loads found in centralized turbine control rooms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 125800-02 require a specific Keyphasor monitor module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. You must pair the 125800-02 I\/O module with the 3500\/25 Keyphasor Monitor card located in the front of the rack. The I\/O module resides in the rear slot directly behind the monitor card.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this module for overspeed protection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile the 125800-02 provides speed data, it primarily serves diagnostic and phase-tracking purposes. For dedicated emergency overspeed shutdown, Bently Nevada recommends the 3500\/53 Electronic Overspeed Detection System.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I troubleshoot a \"Keyphasor Not OK\" status?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck the terminal connections on the 125800-02 first. Ensure the transducer gap produces the required voltage pulse (typically \u0026gt; 2V peak-to-peak). If the \"OK\" LED remains off, the module may have detected an input circuit fault or a power supply mismatch.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is \"Brand New\" stock critical for I\/O modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eI\/O modules are the first point of contact for external electrical surges. A\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e125800-02 ensures the internal surge protection components and pulse-shaping capacitors have not degraded, guaranteeing the signal integrity required for API 670 compliance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":53450781556920,"sku":"125800-02","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/350025125800-01__1_26cedd9d-9a93-44ed-aa99-c99f6f15d249.jpg?v=1778320202","url":"https:\/\/www.globalpetroparts.com\/products\/bently-nevada-125800-02-3500-series-keyphasor-i-o-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}