{"product_id":"bently-nevada-176449-02-3500-42m-proximitor-seismic-monitor","title":"Bently Nevada 176449-02 3500\/42M Proximitor Seismic Monitor","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e176449-02 (3500\/42M)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance four-channel vibration monitor engineered for the Bently Nevada 3500 Machinery Protection System. Designed for critical assets in power generation, oil and gas, and heavy manufacturing, this module accepts inputs from proximity, velocity, and acceleration transducers. Its primary role is to provide continuous machinery protection by cross-referencing live vibration data against user-defined alarm setpoints. By identifying early warning signs of shaft misalignment, bearing wear, or unbalance, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e176449-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eempowers maintenance teams to execute predictive interventions, effectively eliminating catastrophic machine failures and drastically reducing unscheduled facility downtime.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe 3500\/42M monitor leverages a dual-pair channel architecture, allowing for versatile monitoring strategies within a single rack slot.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eChannel Programming:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eChannels are configured in pairs (1\/2 and 3\/4), supporting simultaneous functions. For instance, one pair can monitor Radial Vibration while the second pair tracks Thrust Position or Acceleration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStatic Value Generation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module conditions raw transducer signals into actionable parameters such as Direct, Gap, 1X and 2X Vector, Smax, and Eccentricity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFiltering Logic:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures programmable single-pole filters (4 Hz to 4000 Hz) and constant Q notch filters for \"Not 1X\" and vector monitoring, ensuring high-fidelity signal conditioning even in noisy environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBuffered Outputs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFront-panel coaxial connectors provide short-circuit protected buffered signals for each channel, allowing for direct connection to external frequency analyzers or data collectors without interrupting protection loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\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\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e176449-02\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eU.S.A.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7.7 watts typical\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 kOhm (Standard I\/O)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTransducer Supply\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-24 VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRecorder Output\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 to 20 mA (Individual for each channel)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eLoad Resistance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 600 Ohm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-30 to +65 Celsius\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 Hz to 4000 Hz (User-programmable)\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\u003e241.3 mm x 24.4 mm x 241.8 mm\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\u003e0.91 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eField Service FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do the front-panel LEDs signify for system health?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe OK LED indicates the internal diagnostics of the 3500\/42M are successful. The TX\/RX LED flashes to confirm active serial communication with the Rack Interface Module (RIM), while the Bypass LED illuminates when the monitor is in Bypass Mode, indicating that alarm logic is inhibited.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 3500\/42M monitor process different transducer types simultaneously?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, because channels are programmed in pairs, you can monitor Proximitor signals on one pair and Seismic (Velocity\/Acceleration) signals on the other pair, provided they are within the supported signal range of -24 VDC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if a recorder output is short-circuited?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe monitor operation and protection logic are completely unaffected by short circuits on the 4-20 mA recorder outputs. The module features internal voltage compliance management to maintain signal integrity across its load range.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering Installation and Commissioning Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShielding and Grounding:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAlways terminate signal cable shields at the 3500 system I\/O module ground terminals. Never ground the shield at both ends, as this introduces ground loops that can corrupt the sensitive vibration signals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGap Voltage Calibration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor proximity probe applications, verify the \"Gap\" static value during installation. Ensure the probe is gapped within the linear range of the transducer (typically -10 VDC for standard 8 mm probes) to prevent signal clipping and maintain accurate alarm thresholds.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring Integrity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure that the load resistance for the 4-20 mA recorder outputs does not exceed 600 Ohms. Exceeding this limit will result in signal saturation, causing inaccurate reporting to the DCS or PLC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen using the monitor in high-density rack configurations near the 65 Celsius limit, ensure proper cabinet ventilation. Sustained operation at peak temperatures can degrade the accuracy of the 4-20 mA resolution (from 0.25% at room temp to 0.7% at temperature limits).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666516734315,"sku":"3500\/42M 176449-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-3500-42m-176449-02-proximitor-seismic-monitor-k32jvb2xqxe_b0d50d43-00a9-4728-9846-a30a23c88b20.jpg?v=1765440095","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-176449-02-3500-42m-proximitor-seismic-monitor","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}