{"product_id":"21504-00-40-10-02-bently-nevada-velocity-transducers-21000-series","title":"21504-00-40-10-02 Bently Nevada Velocity Transducers 21000 Series","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada 21504-00-40-10-02 is a high-reliability velocity transducer designed for critical monitoring of rotating machinery. Engineered to convert physical vibration into a usable electrical signal, this transducer is a core component in many classic Turbine Supervisory Instrumentation (TSI) setups. As plants across the globe look to maintain aging yet mission-critical infrastructure, the 21504 model remains a preferred choice for its proven durability and accurate frequency response in harsh industrial environments.\u003c\/p\u003e\n\u003cp\u003eWhen you\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ebuy 21504-00-40-10-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esensors, you are investing in a technology that has stood the test of time in the most demanding turbomachinery applications. Whether your facility manages large steam turbines, high-speed centrifugal compressors, or industrial fans, this transducer provides the feedback necessary to detect imbalance, misalignment, and bearing wear. As your trusted\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21504-00-40-10-02 supplier\u003c\/strong\u003e, Maxwell PLC focuses on delivering\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003egenuine Bently Nevada parts\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethat ensure your protection loops maintain original design sensitivity and longevity.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Accuracy Frequency Response:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned to capture vibration data accurately across a wide frequency range, essential for identifying complex mechanical faults.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Industrial Construction:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt with high-grade materials to withstand continuous exposure to high temperatures, moisture, and hazardous atmospheres.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePassive Monitoring Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOperates without external power, simplifying installation and reducing the complexity of the monitoring loop.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSeismic Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEffectively tracks casing-based vibration, making it a critical asset for safeguarding bearing housings and structural supports.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Mounting Options:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned to integrate into existing site mounting configurations with industry-standard threading.\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\u003eFeature\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\u003eProduct Model\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e21504-00-40-10-02\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eManufacturer\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\u003eTransducer Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eVelocity Transducer\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFrequency Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 Hz to 1 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSensitivity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e20 mV\/in\/s (typical)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMounting Thread\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1\/2-20 UNF-2A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-54°C to +250°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCase Material\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStainless Steel (Corrosion Resistant)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.45 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12.0 x 3.5 x 3.5 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTariff Code\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8537101190\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCountry of Origin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eModel Configuration Explanation\u003c\/h3\u003e\n\u003cp\u003eThe model 21504-00-40-10-02 is defined by a specific configuration code that ensures it matches the mechanical and electrical requirements of your system:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e21504:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSeries identifier for the robust Bently Nevada velocity transducer line.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e00:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIndicates the standard base configuration for mounting and sensing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e40:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSpecifies the sensitivity and frequency response calibration settings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e10:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDenotes the connector and lead configuration for standard industrial wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e02:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRepresents the specific revision\/versioning for mechanical hardware standards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSteam and Gas Turbines:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMonitoring bearing housing vibration to prevent catastrophic rotor contact.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCentrifugal Compressors:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDetecting internal mechanical instability or foundation resonance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCooling Tower Fans:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eLong-term monitoring of structural health in exposed, high-vibration environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial Pumps:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTracking velocity-based vibration for predictive maintenance on mission-critical process pumps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Plant Auxiliaries:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUsed widely in classic power generation environments where rack-based monitoring requires reliable seismic input.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSystem Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis transducer is fully compatible with most classic Bently Nevada vibration monitors, including the 3300 and 3500 series racks when equipped with the appropriate velocity-to-voltage input cards. Because this is a passive sensor, integration is straightforward—simply route the twisted-pair shielded cable to your monitor input and ensure that the monitor gain is set to match the transducer sensitivity.\u003c\/p\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMount the transducer rigidly to the machine housing using a clean, flat surface. Ensure the transducer axis aligns with the vibration vector of interest (typically horizontal or vertical).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCabling:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAlways use high-quality, shielded twisted-pair cables to mitigate the effects of RFI\/EMI in dense electrical cabinets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure shield continuity is maintained through the monitoring path, but ground the shield only at the monitor end to avoid ground loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironment:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhile these sensors are highly resistant to moisture, ensure cable entry points are sealed if the environment is subject to high-pressure wash-downs or oil mist.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eProduct Advantages\u003c\/h3\u003e\n\u003cp\u003eChoosing\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003egenuine Bently Nevada parts\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor your machinery protection is the single best step toward reducing the risk of false-positive alarms. Third-party clones often fail to maintain the strict frequency response curves of the original 21504 design, leading to inaccurate diagnostic data. By sourcing your\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eindustrial automation spare parts\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom Maxwell PLC, you ensure that your protection logic is supported by sensors that function as the machine designer intended.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cp\u003eWe keep the 21504-00-40-10-02\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ein stock\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto support your planned maintenance outages or emergency repairs. For a current\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21504-00-40-10-02 price\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor to arrange for a scheduled delivery, please reach out to our sales team. We offer competitive pricing for bulk procurement and have streamlined global logistics to serve industrial sites worldwide.\u003c\/p\u003e\n\u003ch3\u003eLogistics and Shipping\u003c\/h3\u003e\n\u003cp\u003eWe treat every shipment with the care that mission-critical hardware deserves. Each 21504 transducer is individually wrapped in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eanti-static industrial packaging\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto safeguard the sensitive internal coil and magnetic structure. This protection prevents both electrostatic damage and physical shock, ensuring your sensor is ready for immediate deployment the moment it arrives at your facility.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose Maxwell PLC\u003c\/h3\u003e\n\u003cp\u003eWith 30 years of hands-on experience in assembling and troubleshooting automation hardware, Maxwell PLC offers a depth of service that goes beyond simple distribution. We maintain a technical library and direct OEM relationships to ensure every item we stock is a genuine, high-quality component. Every unit we dispatch undergoes a pre-shipment inspection. We can also provide performance testing documentation, giving your site engineers the data they need to feel confident in the hardware's reliability before the machine is even turned on.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this transducer 100% genuine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, we strictly provide only authentic Bently Nevada parts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 21504-00-40-10-02 in stock?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, this is a core item in our inventory, typically ready for immediate dispatch.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the frequency range?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis unit is calibrated for a frequency range of 10 Hz to 1 kHz.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this with my existing Bently monitor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, as long as your monitor card is configured for velocity transducer inputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDo you provide shipping worldwide?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, we leverage our global logistics network to support plants in any country.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this unit power-hungry?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, this is a passive device and does not require an external power supply to the sensor itself.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I verify compatibility?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSend us your current monitor part number, and we will cross-reference the transducer requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan you provide a certificate of origin?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, full compliance documentation is included with every purchase.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes the 21504 series reliable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIts simple, passive, and robust electromagnetic design has made it a favorite for decades.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDo you offer volume discounts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, please contact our sales team for pricing tailored to your facility's maintenance requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRelated Models\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 21000-01-10-10-00\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330500-01-00\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330525-00-05-10-02-05\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330400-01-00\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330425-00-05-10-02-05\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 3500\/42M (176449-01)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330101-00-08-10-02-00\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518850064557,"sku":"21504-00-40-10-02","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-21504-00-40-10-02-standard-mount-probe-xuuhwlm14cd.jpg?v=1766980422","url":"https:\/\/www.maxwellplc.com\/products\/21504-00-40-10-02-bently-nevada-velocity-transducers-21000-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}