{"product_id":"bently-nevada-3300-50-01-02-03-02-dual-tachometer-monitor","title":"Bently Nevada 3300\/50-01-02-03-02 Dual Tachometer Monitor","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 3300\/50-01-02-03-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-precision dual tachometer monitor designed for legacy 3300 machinery protection systems. It continuously measures shaft rotational speed, detects zero-speed conditions, and identifies reverse rotation. This module is essential for protecting turbines, compressors, and other critical rotating machinery by providing reliable speed monitoring and alarm functions.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual Sensor Input:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAccepts signals from two Proximitor sensors or magnetic pickups with internal voting logic for improved reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Speed Functions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports RPM measurement, zero speed detection, and rotor acceleration monitoring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePeak Hold Display:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCaptures maximum shaft speed for overspeed analysis.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLCD Interface:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFront-panel display provides current RPM readings, bar graph alarms, and status indicators.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrity Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eContinuously checks transducer connections and wiring for faults.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHermetically-Sealed Relays:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProvides robust alert and danger signaling for harsh industrial environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSignal Type: Pulse input from Magnetic Pickup or Proximitor sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInput Frequency: Up to 20 kHz (1,200,000 CPM)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTriggering Threshold: Manually or automatically adjustable for noise immunity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOutput\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eRecorder Output: 4–20 mA or 1–5 Vdc proportional to shaft speed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBuffered Output: Front-panel coaxial connectors provide raw pulse signal for diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRelays: Independent Alert and Danger channels, hermetically-sealed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eContact Rating: 5A @ 120\/240 Vac or 5A @ 28 Vdc\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eAccuracy: ±0.01% of measured speed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResolution: 1 RPM (up to 9,999 RPM)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSystem OK Monitoring: Detects open circuits, short circuits, or sensor failures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eOperating Temperature: 0°C to +65°C (+32°F to +150°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStorage Temperature: -40°C to +85°C (-40°F to +185°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRelative Humidity: Up to 95% non-condensing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eWeight: 1 kg (2.2 lbs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower Consumption: Nominal 1.5 W\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting: Rack-mounted in legacy 3300 series chassis\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eOperational Modes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eContinuous Speed Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTracks shaft RPM in real time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eZero-Speed Detection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConfirms full stop for turning gear engagement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReverse Rotation Detection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIdentifies backward rotation using dual sensor inputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eRecommended for use in turbines, compressors, generators, and large rotating machinery where precise speed monitoring and overspeed detection are critical for operational safety.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the 3300\/50 accept multiple sensor types?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it supports Proximitor 8mm sensors or magnetic pickups, with internal voting logic for reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How accurate is the speed measurement?\u003c\/strong\u003e\u003cbr\u003eA: The module provides ±0.01% accuracy with 1 RPM resolution for speeds up to 9,999 RPM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this compatible with modern Bently Nevada systems?\u003c\/strong\u003e\u003cbr\u003eA: It is designed for legacy 3300 systems. For new installations, Bently recommends the 3500\/50M Tachometer Module.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44114149998691,"sku":"3300\/50-01-02-03-02","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/330050-01-02-03-02-1.jpg?v=1776068428","url":"https:\/\/precisemodule.com\/products\/bently-nevada-3300-50-01-02-03-02-dual-tachometer-monitor","provider":"Precise Module Ltd.","version":"1.0","type":"link"}