{"product_id":"epro-pr9376-20-hall-effect-speed-sensor","title":"Epro PR9376\/20 Hall-Effect Speed Sensor","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEPRO PR9376\/20\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a non-contact Hall-effect speed and proximity sensor developed for rotational monitoring in turbomachinery systems. It is widely applied on turbines, compressors, pumps, and gear-driven equipment where reliable pulse generation from ferromagnetic targets is required for speed control and protection functions.\u003c\/p\u003e\n\u003cp\u003eThe device converts changes in magnetic flux caused by passing gear teeth or shaft features into electrical pulse signals, enabling accurate speed measurement even in demanding operating environments.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOperating Principle\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis sensor uses a Hall-effect semiconductor element to detect variations in magnetic fields. When a ferromagnetic target passes through the sensing zone, the internal circuit switches rapidly, producing a clean digital output signal suitable for speed counting and overspeed monitoring systems.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSensing technology: Hall-effect magnetic detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDetection method: Non-contact pulse generation from rotating ferromagnetic targets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible targets: Steel, soft iron, gear teeth, shaft keyways (non-stainless materials only)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOutput signal: Square wave pulse proportional to target passage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOutput levels: High \u0026gt;10 V \/ Low \u0026lt;1 V (typical 12 VDC, 100 kΩ load)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupply voltage: 10–30 VDC, approx. 25 mA maximum (variant dependent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSwitching response time: 1 µs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFrequency capability:\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eStandard configuration: up to 12 kHz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExtended variants: up to 50 kHz depending on system design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003e\n\u003cp\u003eAir gap requirement: 1.0 mm (Module 1), 1.5 mm (Module ≥2)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOperating temperature: -25 °C to +100 °C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStorage temperature: -40 °C to +100 °C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProtection rating: IP65 to IP67 depending on version\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHousing: Stainless steel with PTFE-insulated cable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSensor diameter: 14 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOverall length: approximately 160 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeight: 210 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompliance: CE (2014\/30\/EU, 2014\/35\/EU), RoHS compliant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eFully non-contact operation eliminates mechanical wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStable pulse output for speed and position monitoring systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh switching frequency suitable for fast rotating machinery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStainless steel housing designed for harsh industrial environments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWide temperature tolerance for turbine and compressor applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh ingress protection against dust, oil mist, and moisture\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eProper alignment between the sensor face and target wheel is critical for stable signal generation. Recommended air gap is 1.0–1.5 mm depending on gear module size. Installation deviation may result in unstable pulse output or reduced signal amplitude.\u003c\/p\u003e\n\u003cp\u003eShielded cables are recommended in electrically noisy environments to maintain signal integrity and reduce interference.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Areas\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSteam and gas turbine speed monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompressor shaft speed measurement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial pump rotational monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGearbox speed and position detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOverspeed protection systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial condition monitoring setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the PR9376\/20 work with stainless steel targets?\u003c\/strong\u003e\u003cbr\u003eA: No. It requires ferromagnetic materials such as carbon steel or soft iron.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can it detect very low rotational speeds?\u003c\/strong\u003e\u003cbr\u003eA: Yes, but performance depends on target geometry and installation accuracy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the impact of incorrect air gap adjustment?\u003c\/strong\u003e\u003cbr\u003eA: It may lead to weak signals, jitter, or missed pulses.\u003c\/p\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":43260874555482,"sku":"PR9376\/20","price":178.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/PR9376010-0011_6f977137-bb1b-4f39-86f0-cbb291b4140d.jpg?v=1776931884","url":"https:\/\/www.plcmasters.com\/it\/products\/epro-pr9376-20-hall-effect-speed-sensor","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}