{"product_id":"126648-01-bently-nevada-keyphasor-i-o-module-3","title":"Bently Nevada 3500\/25 149369-01 Enhanced Keyphasor Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada 3500\/25 149369-01 is an Enhanced Keyphasor Module designed for the 3500 Machinery Protection System. This half-height, two-channel module provides essential Keyphasor signals to monitor modules within a 3500 rack. By receiving input signals from proximity probes or magnetic pickups, the module converts them into digital Keyphasor signals that indicate the precise moment a shaft mark coincides with the transducer. This updated module (149369-01) replaces the legacy PWA 125792-01, offering improved signal processing while maintaining full downward compatibility in form, fit, and function.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHalf-height module design for efficient rack space utilization.\u003c\/li\u003e\n\u003cli\u003eTwo independent input channels.\u003c\/li\u003e\n\u003cli\u003eSupports inputs from proximity probes or magnetic pickups.\u003c\/li\u003e\n\u003cli\u003eGenerates once-per-turn event signals from multi-event-per-turn inputs.\u003c\/li\u003e\n\u003cli\u003eSupports field-upgradeable firmware and asset management data reporting.\u003c\/li\u003e\n\u003cli\u003eSupports up to four Keyphasor signals in normal configuration and up to eight in paired configurations.\u003c\/li\u003e\n\u003cli\u003eCompatible with Triple Modular Redundant (TMR) applications using parallel module operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSteam and Gas Turbines: Monitoring speed, phase, thermal growth, and unbalance.\u003c\/li\u003e\n\u003cli\u003eAeroderivative Gas Turbines: Casing and high-speed core shaft vibration monitoring.\u003c\/li\u003e\n\u003cli\u003eHydroelectric Turbines: Rotor speed and air gap monitoring.\u003c\/li\u003e\n\u003cli\u003eCentrifugal Compressors: Speed variation detection and automated shutdown for bearing failure.\u003c\/li\u003e\n\u003cli\u003eReciprocating Compressors: Rod position, pressure, and impulse monitoring for wear detection.\u003c\/li\u003e\n\u003cli\u003eCritical Pumps: Reverse rotation and zero-speed detection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e3500\/25 149369-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e21.8 kOhm minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3.2 Watts typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-30 degC to +65 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 degC to +85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Space\u003c\/td\u003e\n\u003ctd\u003e1 half-height front slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure the 3500 rack power is disconnected before inserting or removing the module.\u003c\/li\u003e\n\u003cli\u003eThe module occupies one half-height front slot; ensure the corresponding I\/O module is installed in the rear slot.\u003c\/li\u003e\n\u003cli\u003eField wiring for proximity probes or magnetic pickups connects to the rear I\/O module terminal blocks.\u003c\/li\u003e\n\u003cli\u003eFor External Terminations (ET), use only approved Bently Nevada cables to connect the I\/O module to the ET block.\u003c\/li\u003e\n\u003cli\u003eUse isolated I\/O modules when signals are shared between multiple devices to prevent electrical interference.\u003c\/li\u003e\n\u003cli\u003eMaintain proper ESD precautions during handling to protect sensitive internal circuitry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary function of the 3500\/25?\u003c\/strong\u003e\u003cbr\u003eIt detects the Keyphasor mark on a rotating shaft to provide precise timing signals required for measuring shaft speed, 1X vibration amplitude, and phase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module be used in TMR configurations?\u003c\/strong\u003e\u003cbr\u003eYes, the 3500\/25 supports TMR applications by using two modules in parallel to provide primary and secondary signals to the rack.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module replace older versions?\u003c\/strong\u003e\u003cbr\u003eYes, the 149369-01 is the updated version that completely replaces the legacy PWA 125792-01 module.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":50702106362108,"sku":"149369-01","price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_3973ba71-4d96-44cb-88c0-b921621438d6.jpg?v=1785126351","url":"https:\/\/www.electronicplc.com\/ar\/products\/126648-01-bently-nevada-keyphasor-i-o-module-3","provider":"Electronic PLC","version":"1.0","type":"link"}