{"product_id":"tachometer-3300-50-01-01-00-01-bently-nevada-rotational-speed-monitor","title":"Tachometer 3300\/50-01-01-00-01 Bently Nevada Rotational Speed Monitor","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe 3300\/50-01-01-00-01 is a high-performance speed monitoring instrument designed for the continuous tracking of rotational velocity in industrial machinery. As a core component of the Bently Nevada 3300 series protection system, this tachometer processes signals from proximity probes or magnetic pickups to provide real-time RPM data. It is engineered to detect underspeed, overspeed, and zero-speed conditions, offering essential protective logic to prevent mechanical failure during startup, steady-state operation, or coast-down. This specific configuration is optimized for standard industrial environments, providing a clear digital readout and integrated alarm relays for immediate system response.\u003c\/p\u003e\n\u003ch3\u003eHardware Infrastructure and Physical Parameters\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\u003eTechnical Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSignal Input\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSingle-channel proximity transducer or magnetic pickup\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFull-Scale Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 9,999 RPM (Standard digital display)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Signal\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 to 20 mA proportional to speed\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRelay Configuration\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eEpoxy-sealed for standard industrial reliability\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eAgency Certification\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCSA\/NRTL\/C compliant (Option 01)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSafety Barrier\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNot included \/ External barrier required for hazardous zones\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eNet Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.12 kg (2.47 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePhysical Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e241 mm x 50 mm x 103 mm (9.50 in x 1.98 in x 4.05 in)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Deployment Scenarios\u003c\/h3\u003e\n\u003cp\u003eThis tachometer module is a fundamental requirement for any rotating asset where speed regulation is critical to mechanical safety and process control. Common implementations include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eTurbo-machinery Protection: Continuous overspeed monitoring for steam and gas turbines to prevent catastrophic rotor failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConveyor System Safety: Zero-speed and underspeed detection to identify mechanical jams or belt slippage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReciprocating Engines: Accurate RPM tracking for load management and ignition timing references.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial Pump Stations: Monitoring rotational velocity to prevent cavitation or dry-run conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCooling Tower Fans: Tracking fan speed to optimize airflow and detect drivetrain disconnects.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this tachometer process signals from multiple sensors simultaneously?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 3300\/50 is a single-channel module designed to monitor a single shaft speed. For multi-shaft or redundant speed voting configurations, additional modules or 3500 series systems are typically required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the significance of the \"01\" Agency Approval option?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 01 suffix indicates that the unit is certified by CSA\/NRTL\/C, ensuring the hardware meets specific safety and electrical standards for industrial use in North American markets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this module provide an analog output for DCS integration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, it provides a standard 4 to 20 mA analog output that is proportional to the measured RPM, allowing for remote monitoring and data logging in a plant-wide control system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the monitor handle a \"loss of signal\" event?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 3300\/50 includes \"Not OK\" circuitry. If the input signal is lost or the sensor fails, the module activates a fault indicator to notify operators, preventing false trips while maintaining system awareness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the display readable in dark engine rooms?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The module features a bright, 4-digit liquid crystal display (LCD) on the faceplate, providing clear visibility of the current RPM even in poorly lit industrial environments.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45847799627949,"sku":"3300\/50-01-01-00-01","price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/330050-1.jpg?v=1774510444","url":"https:\/\/www.maxwellplc.com\/products\/tachometer-3300-50-01-01-00-01-bently-nevada-rotational-speed-monitor","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}