{"product_id":"woodward-8290-185-electromagnetic-speed-sensor-mpu-for-engine-control-systems","title":"Woodward 8290-185 | Electromagnetic Speed Sensor (MPU) for Engine Control Systems","description":"\u003ch3\u003e\u003cspan\u003eProduct Description:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan\u003eWoodward 8290-185\u003c\/span\u003e is a \u003cspan\u003ehigh-performance Electromagnetic Speed Sensor\u003c\/span\u003e (also known as a \u003cspan\u003eMagnetic Pickup Unit\u003c\/span\u003e or MPU) designed for use in \u003cspan\u003eengine control systems\u003c\/span\u003e. It is an essential component for \u003cspan\u003esensing the speed of a prime mover\u003c\/span\u003e, such as a \u003cspan\u003egas or diesel engine\u003c\/span\u003e, by detecting the passage of gear teeth on a flywheel. This passive sensor converts mechanical motion into an electrical frequency, providing accurate engine speed data for applications like \u003cspan\u003efuel delivery\u003c\/span\u003e and \u003cspan\u003espeed regulation\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp\u003eThe 8290-185 is robustly constructed with a \u003cspan\u003estainless steel\u003c\/span\u003e body and offers exceptional resistance to vibration, corrosion, and harsh environmental conditions, making it ideal for mounting directly on \u003cspan\u003eengine bell housings\u003c\/span\u003e. Unlike electronic modules, this sensor requires no external power supply, making it simple to install and maintain.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePassive Operation:\u003c\/span\u003e\u003cbr\u003eThe sensor requires no external power source; it generates its own AC voltage as gear teeth pass the magnetic field.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHigh Output:\u003c\/span\u003e\u003cbr\u003eDesigned to deliver a strong signal even at \u003cspan\u003elow cranking speeds\u003c\/span\u003e, ensuring reliable performance during engine start-up.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRugged Construction:\u003c\/span\u003e\u003cbr\u003eEncapsulated in \u003cspan\u003estainless steel\u003c\/span\u003e to withstand vibration, oil, fuel, and moisture, making it ideal for industrial engine applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCorrosion Resistance:\u003c\/span\u003e\u003cbr\u003eFeatures a \u003cspan\u003estainless steel shell\u003c\/span\u003e that resists corrosion, ensuring long-lasting durability in harsh operating environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePrecision Sensing:\u003c\/span\u003e\u003cbr\u003eConverts mechanical motion into an electrical signal, which is directly proportional to the engine speed (\u003cspan\u003eRPM\u003c\/span\u003e).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications:\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" width=\"NaN\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003e\u003cspan\u003eParameter\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eSpecification Details\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel Number\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e8290-185\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThread Size\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5\/8-18 UNF-2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTotal Length\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 4.0 inches (102 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThreaded Length\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3.0 inches (76 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eConnector Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e2-pin MS Connector (typically mates with MS3106)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e-54°C to +107°C (-65°F to +225°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e1.0 to 30 VAC (Peak-to-Peak) depending on gap\/speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eResistance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eTypically 150 to 250 Ω (Cold)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e300 Series Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eInstallation \u0026amp; Adjustment:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eProper installation of the \u003cspan\u003e8290-185\u003c\/span\u003e is crucial for accurate and reliable operation. Follow these steps to ensure correct setup:\u003c\/p\u003e\n\u003col class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFind the High Point:\u003c\/span\u003e\u003cbr\u003eRotate the engine until a gear tooth is centered in the sensor hole.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eThread In:\u003c\/span\u003e\u003cbr\u003eScrew the MPU in by hand until the sensor tip \u003cspan\u003egently touches\u003c\/span\u003e the gear tooth.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBack Off:\u003c\/span\u003e\u003cbr\u003eBack the MPU out (counter-clockwise) by \u003cspan\u003e1\/2 to 3\/4 of a turn\u003c\/span\u003e. This creates a standard \u003cspan\u003eair gap of 0.025\" to 0.035\"\u003c\/span\u003e (0.64mm to 0.89mm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eLock Down:\u003c\/span\u003e\u003cbr\u003eSecure the MPU with the provided locknut to prevent any movement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Choose the Woodward 8290-185?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDurability:\u003c\/span\u003e\u003cbr\u003eDesigned for \u003cspan\u003eharsh environments\u003c\/span\u003e, this sensor is corrosion-resistant and vibration-proof, ensuring long-lasting operation in demanding industrial settings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNo External Power Required:\u003c\/span\u003e\u003cbr\u003eWith passive operation, the \u003cspan\u003e8290-185\u003c\/span\u003e generates its own voltage, simplifying installation and reducing the need for additional power supplies.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReliable Engine Speed Sensing:\u003c\/span\u003e\u003cbr\u003eProvides \u003cspan\u003eaccurate RPM readings\u003c\/span\u003e to ensure precise engine control and efficient fuel management.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVersatile Compatibility:\u003c\/span\u003e\u003cbr\u003eWorks seamlessly with \u003cspan\u003eWoodward Governors\u003c\/span\u003e (e.g., \u003cspan\u003e2301A\u003c\/span\u003e or \u003cspan\u003ePeak 150\u003c\/span\u003e) or other \u003cspan\u003eelectronic control units (ECUs)\u003c\/span\u003e for speed regulation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WOODWARD","offers":[{"title":"Default Title","offer_id":44096081002595,"sku":"8290-185","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/8290-185.jpg?v=1775034637","url":"https:\/\/precisemodule.com\/products\/woodward-8290-185-electromagnetic-speed-sensor-mpu-for-engine-control-systems","provider":"Precise Module Ltd.","version":"1.0","type":"link"}