{"product_id":"bently-nevada-3500-25-01-03-cn-3500-25-enhanced-keyphasor-module","title":"Bently Nevada 3500\/25-01-03-CN 3500\/25 Enhanced Keyphasor Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e3500\/25-01-03-CN\u003c\/strong\u003e is a high-performance, half-height, two-channel machinery protection component designed to deliver phase reference and speed measurements within the Bently Nevada 3500 Series Machinery Protection System rack framework. This module processes incoming electrical signals from proximity probe transducers or passive magnetic pickups to establish a highly precise, digital once-per-turn or multiple-event-per-turn timing pulse. These generated phase reference pulses (Keyphasor signals) are transmitted directly via the 3500 system backplane to other monitoring modules and interconnected diagnostic software. This real-time processing enables the machinery protection system to compute shaft rotative speed, track synchronous vector tracking variables, and map specific vibration amplitudes alongside physical phase angles across fluid-filmed bearing assets.\u003c\/p\u003e\n\u003cp\u003eThe operational setup of the \u003cstrong\u003e3500\/25\u003c\/strong\u003e module incorporates a single half-height two-channel Keyphasor card variant mapped alongside an internal barrier I\/O module type featuring dedicated internal compression screw terminations. The integrated internal safety barriers provide certified intrinsically safe connections for transducers running straight into hazardous deployment spaces. This configuration is designed to comply with strict international regulatory expectations while providing downward functional compatibility with older 3500 module versions, effectively replacing preceding components such as the PWA 125792-01 assembly.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDual-channel speed and phase monitoring design providing once-per-turn and multi-event pulse conditioning.\u003c\/li\u003e\n\u003cli\u003eIntegrated intrinsically safe internal barriers supporting direct connection to hazardous location transducers.\u003c\/li\u003e\n\u003cli\u003eProvides real-time phase reference mapping, 1X vibration amplitude vectors, and comprehensive speed diagnostics across the system rack backplane.\u003c\/li\u003e\n\u003cli\u003eAdvanced capabilities including generation of once-per-turn timing pulses from high-density multi-event gear targets.\u003c\/li\u003e\n\u003cli\u003eCoaxial buffered front-panel interfaces and rear Euro-style connections providing clean raw transducer waveform telemetry.\u003c\/li\u003e\n\u003cli\u003eBuilt-in system health validation via dedicated front plate OK and communication status (TX\/RX) LED arrays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReal-time phase reference logging and vector vibration tracking on utility steam and gas power turbines.\u003c\/li\u003e\n\u003cli\u003eMulti-channel shaft speed monitoring, overspeed trip integration, and zero-speed indexing across critical centrifugal air compressors.\u003c\/li\u003e\n\u003cli\u003eStructural phase matching and multi-plane field balancing on high-speed industrial process fans and fluid-filmed bearing gearboxes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eOption Breakdown and System Descriptions\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3500\/25-AA-BB-CC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3500\/25 Enhanced Keyphasor Module Assembly \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eA: 01\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle half-height 2-channel Keyphasor card (order for 2-channels) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eB: 03\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInternal Barrier I\/O with Internal Terminations \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eC: 03-CN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAgency Approval Option with specific localized compliance configurations \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter Classification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003ePrecise Engineering Values\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada (Baker Hughes) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3500\/25-01-03-CN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type Variant\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEnhanced Keyphasor Module with Internal Safety Barriers \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.2 Watts typical \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNon-Isolated Input Signal Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+0.8 V to -21.0 V \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolated Input Signal Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+5.0 V to -11.0 V \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Transducer Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21.8 kOhm minimum \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Speed\/Frequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 to 1,200,000 cpm (0.017 to 20 kHz) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Speed\/Frequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 to 99,999 cpm (0.017 to 1667 Hz) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNon-Processed Signal Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.017 to 100 Hz: +\/- 1 cpm; 101 to 500 Hz: +\/- 8 cpm; 501 Hz to 20 kHz: +\/- 1% of cpm \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProcessed Signal Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.017 to 60 Hz: +\/- 1 cpm; 61 to 150 Hz: +\/- 8 cpm; 151 Hz to 20 kHz: +\/- 1% of cpm \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto-Threshold Pulse Requirements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMinimum 2 Volts peak-to-peak amplitude; Minimum frequency of 120 rpm (2 Hz) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManual-Threshold Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUser-selectable from 0 to -20 Vdc; Minimum 500 millivolts peak-to-peak triggering amplitude \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUser-Selectable Hysteresis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 to 2.5 Volts \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Output Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e504 Ohm maximum buffered output impedance \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransducer Transmit Power Limit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-24 Vdc, 40 mA maximum per channel \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature (Barrier I\/O)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 degC to +65 degC (32°F to +150°F) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 degC to +85 degC (-40°F to +185°F) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Relative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e95%, non-condensing \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Module Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e119.9 mm x 24.4 mm x 256.5 mm (4.72 in x 0.96 in x 10.10 in) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Module Net Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.34 kg (0.76 lbs) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Module Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e241.3 mm x 24.4 mm x 103.1 mm (9.50 in x 0.96 in x 4.06 in) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Module Net Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.46 kg (1.01 lbs) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis Space Allocation (Main)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 half-height front monitor rack slot \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis Space Allocation (I\/O)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 full-height rear interface rack slot \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConnector Pin Layout\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction Assignment and Loop Configuration\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Panel Coaxial Port 1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 1 buffered transducer phase\/speed voltage raw waveform output \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Panel Coaxial Port 2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel 2 buffered transducer phase\/speed voltage raw waveform output \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear Euro Terminal Blocks\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndependent lines for intrinsically safe probe power, shield grounds, and return path tracking signals \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack Alignment Rules:\u003c\/strong\u003e Slide the main half-height processing card into any of the 14 available front monitor slots of the 3500 chassis using the dedicated half-height card guide adapter. Mount the corresponding full-height barrier I\/O module into the rear slot directly opposing the main card assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Intrinsic Wiring:\u003c\/strong\u003e Ensure all external field conductors entering the internal barrier I\/O terminal block are installed strictly in accordance with factory document drawing 138547. Route intrinsically safe probe cables through separate, isolated wire trays away from all non-intrinsically safe power or machinery supply feeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrostatic Control Procedures:\u003c\/strong\u003e A single-use conductive electrostatic grounding wrist strap must be worn and correctly terminated to the machinery rack structure when slotting the cards or moving local components to avoid irreversible circuit degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Monitoring Limits:\u003c\/strong\u003e Each single protection rack can support a maximum of two main Keyphasor processing modules, with one module allocated to the top half-slot line and the second located in the bottom half-slot line.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMC Directives:\u003c\/strong\u003e European Community Directive 2014\/30\/EU compliant via EN 61000-6-2 (Industrial Immunity) and EN 61000-6-4 (Industrial Emissions) verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Safety Rules:\u003c\/strong\u003e European Community Directive 2014\/35\/EU compliant under standard EN 61010-1 parameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaritime Standards:\u003c\/strong\u003e Certified under DNV GL rules for maritime vessels\/offshore installations alongside American Bureau of Shipping (ABS) Steel Vessels Rules Part 1 guidelines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoHS Directive:\u003c\/strong\u003e Fully compliant under European Community RoHS Directive 2011\/65\/EU and China RoHS regulations maintaining a 15-year environment-friendly use period (EFUP).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous Approvals:\u003c\/strong\u003e Class I, Zone 2 AEx\/Ex nA nC ic [ia Ga] IIC T4 Gc and Class I, Division 2, Groups A, B, C, and D boundaries when used with internal safety barrier interfaces.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668309733739,"sku":"3500\/25-01-03-CN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/350025-01-03-CN-0rgfnwxv52z_f7055649-3028-4856-92b7-f9f6ba91e52e.jpg?v=1765520806","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-3500-25-01-03-cn-3500-25-enhanced-keyphasor-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}