{"product_id":"3500-45-bently-nevada-position-monitor-module-3500-series","title":"3500\/45 Bently Nevada Position Monitor Module | 3500 Series","description":"\u003ch3\u003e\n\u003cspan style=\"color: rgb(185, 28, 28);\"\u003eGlobal PLC Spare HUB's Insight\u003c\/span\u003e:\u003c\/h3\u003e\n\u003cp\u003eRotating machinery running at high speeds requires absolute precision in tracking rotor displacement relative to stationary casings. The \u003cspan style=\"color: #1d4ed8; font-weight: bold;\"\u003eBently Nevada 3500\/45\u003c\/span\u003e Position Monitor Module processes multi-type transducer inputs to deliver continuous axial position, differential expansion, and valve stroke monitoring. Unlike basic signal conditioning cards, this \u003cspan style=\"color: #b91c1c; font-weight: bold;\"\u003e3500 Series\u003c\/span\u003e processor handles complex phase relationships and dual-ramp expansion profiles, preventing catastrophic rubs in massive steam and gas turbines.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003ePerformance Specification Matrix\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eBrand Identity\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cspan style=\"color: #b91c1c; font-weight: bold;\"\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eModel \u0026amp; Series\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\n\u003cspan style=\"color: #1d4ed8; font-weight: bold;\"\u003e3500\/45\u003c\/span\u003e \/ \u003cspan style=\"color: #b91c1c; font-weight: bold;\"\u003e3500 Series\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eInput Channel Count\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003e4 independent channels per module\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003ePower Consumption\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003e5.6 W to 8.5 W depending on selected I\/O type\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eInput Impedance Range\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003e10 kΩ to 1 MΩ based on transducer selection\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eMeasurement Accuracy\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003e±0.33 percent typical, ±1 percent maximum\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eFrequency Response\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eDirect filter -3 dB at 1.2 Hz; Gap filter -3 dB at 0.41 Hz\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eRecorder Output Range\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003e+4 to +20 mA across 0 to 600 Ω load\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eOperating Temperature\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003e-30 °C to +65 °C (-22 °F to +150 °F)\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003eStorage Temperature\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cb\u003e-40 °C to +85 °C (-40 °F to +185 °F)\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cb\u003eHardware Compatibility and Transducer Support\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eProximity \u0026amp; RPT Probes\u003c\/b\u003e: Accepts standard proximity sensors and Rotary Position Transducers with dedicated -24 Vdc supply rails.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLVDT Configurations\u003c\/b\u003e: Interfacing support for DC LVDTs (+15 Vdc power) and AC LVDTs (2.3 Vrms, 3400 Hz excitation).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePotentiometric Inputs\u003c\/b\u003e: Configurable for rotary potentiometers requiring -12.38 Vdc excitation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eOperational Diagnostics \u0026amp; Health Monitoring\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFront-Panel Status LEDs\u003c\/b\u003e: Instant visual verification via green \u003cb\u003eOK LED\u003c\/b\u003e, flashing \u003cb\u003eTX\/RX LED\u003c\/b\u003e, and active \u003cb\u003eBypass LED\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSelf-Check Architecture\u003c\/b\u003e: Continuous loop verification isolates internal hardware degradation without dropping healthy monitoring loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShort-Circuit Resilience\u003c\/b\u003e: Recorder outputs remain entirely unaffected by external loop short-circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eLogistics, Fulfillment, and Support\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eExpedited Dispatch\u003c\/b\u003e: Guaranteed shipment within \u003cb\u003e24-48 hours\u003c\/b\u003e of order placement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCourier Network\u003c\/b\u003e: Global delivery facilitated securely via \u003cb\u003eFedEx\u003c\/b\u003e, \u003cb\u003eUPS\u003c\/b\u003e, and \u003cb\u003eDHL\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWarranty Coverage\u003c\/b\u003e: Backed by a full \u003cb\u003e12-month warranty\u003c\/b\u003e for operational security.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eTarget Industrial Applications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSteam Turbine Thrust Protection\u003c\/b\u003e: Monitors rotor axial displacement against thrust bearing limits to prevent mechanical failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDifferential Expansion Tracking\u003c\/b\u003e: Measures the relative growth rate between turbine rotors and machine casings during startup and shutdown thermal transients.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHydraulic Valve Stroke Feedback\u003c\/b\u003e: Tracks precise governor and trip valve positions using LVDT or potentiometer inputs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eWhat causes a transient spike on the 3500\/45 recorder output loop?\u003c\/b\u003e\u003cbr\u003eField investigation often traces recorder signal noise to unshielded 4-20 mA cabling picking up variable frequency drive harmonics. Ensure cable shields are grounded strictly at one end to maintain loop stability.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHow do I select the proper input impedance for an AC LVDT setup?\u003c\/b\u003e\u003cbr\u003eEngineering guidelines require matching the monitor input impedance to 137 kΩ for standard AC LVDT configurations to prevent signal attenuation and phase distortion over long cable runs.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhy does the Bypass LED remain illuminated during runtime?\u003c\/b\u003e\u003cbr\u003eThe LED indicates the channel has been forced into manual override through the configuration software, usually during sensor calibration or maintenance testing.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhat is the best practice for storing spare position monitor modules?\u003c\/b\u003e\u003cbr\u003eStore units in a temperature-controlled environment between -40 °C and +85 °C inside original anti-static shielding bags to protect sensitive microprocessors from electrostatic discharge.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHow can I verify transducer power supply health on site?\u003c\/b\u003e\u003cbr\u003eMeasure the designated terminal test points using a high-impedance digital multimeter to confirm that -24 Vdc for proximitors or +15 Vdc for DC LVDTs remains stable under load.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/3500-45_2.png?v=1785911238\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45325909328054,"sku":"3500\/45","price":103.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/3500-45_f212da53-6649-49a9-bfcc-4d078550cfed.jpg?v=1785911204","url":"https:\/\/www.plcsparehub.com\/products\/3500-45-bently-nevada-position-monitor-module-3500-series","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}