{"product_id":"bently-nevada-135489-02-3500-42-internal-barrier-i-o-module","title":"Bently Nevada 135489-02 3500\/42 Internal Barrier I\/O Module","description":"\u003cp\u003eConfigured for intrinsically safe transducer interfacing within Bently Nevada 3500 Series Machinery Protection Systems, the \u003cstrong\u003eBently Nevada 135489-02\u003c\/strong\u003e (\u003cstrong\u003e3500\/42\u003c\/strong\u003e Internal Barrier I\/O Module) provides direct physical\/electrical execution. The hardware operates as a four-channel isolated interface that restricts electrical energy routing into hazardous areas while conditioning incoming sensor signals. Paired directly with the 3500\/42M Proximitor Seismic Monitor, this rear I\/O component manages field sensor power distribution and returns analog vibration, position, or velocity data across internal galvanic barriers.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e135489-02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 3500 Series Rack Height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +80 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e8 to 24 VDC (Nominal), 10 mA per channel input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eProximitor\/Seismic Barrier I\/O Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Monitor\u003c\/td\u003e\n\u003ctd\u003eBently Nevada 3500\/42M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e4 Isolated Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransducer Compatibility\u003c\/td\u003e\n\u003ctd\u003eProximity Probes, Accelerometers, Velomitors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Limit\u003c\/td\u003e\n\u003ctd\u003e2 A per channel maximum load capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHazardous Area Protection\u003c\/td\u003e\n\u003ctd\u003eIntegrated Galvanic\/Zener Isolation Barriers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Protections\u003c\/td\u003e\n\u003ctd\u003eReverse polarity, overvoltage, short-circuit protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMachinery Monitoring and TSI Features\u003c\/h3\u003e\n\u003cp\u003eThe module handles the physical layer execution needed for raw eddy-current probe scaling when field sensors are positioned inside classified explosive atmospheres. It delivers the precise negative DC excitation voltage required for continuous gap voltage validation, maintaining accurate baseline readings against standard -10 VDC targets. By incorporating internal zener and galvanic barriers directly onto the I\/O card, the hardware establishes cross-talk suppression and isolates noise transients across all four channels. This setup ensures that high-frequency dynamic seismic waveforms and low-frequency rotor dynamics parameters feed into the main monitor without degradation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does this internal barrier module require external zener blocks for hazardous area deployment?\u003c\/p\u003e\n\u003cp\u003eA: No, the 135489-02 integrates internal safety barriers that limit current and voltage fields directly, enabling direct connection to proximity or seismic sensors located in hazardous zones without extra external components.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module indicate a physical wiring fault or sensor failure within the field loop?\u003c\/p\u003e\n\u003cp\u003eA: The hardware operates alongside the front-panel 3500\/42M monitor to monitor loop impedance; it registers a \"Not OK\" status fault if a sensor circuit undergoes an open or short-circuit condition inside the field boundary.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Ground Alignment:\u003c\/strong\u003e Install the module firmly into the rear slot directly opposing the 3500\/42M monitor. Secure the mounting screws completely to ground the internal barrier circuits to the chassis frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntrinsically Safe Wiring Segregation:\u003c\/strong\u003e Route all blue intrinsically safe field wiring away from non-intrinsically safe cabling. Maintain a minimum physical distance of 50 mm or install certified insulation barriers within the wireways.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Baseline:\u003c\/strong\u003e Terminate the transducer cable shields exclusively at the designated clean instrumentation ground terminals on the rear I\/O module block. Do not ground the cable shield at both the monitor rack and the machine housing.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":42870842753114,"sku":"3500\/42 135489-02","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/418.jpg?v=1773020539","url":"https:\/\/www.spareoil.com\/products\/bently-nevada-135489-02-3500-42-internal-barrier-i-o-module","provider":"SpareOil Automation","version":"1.0","type":"link"}