{"product_id":"epro-mms3120-022-100-eddy-current-sensor","title":"EPRO MMS3120-022-100 Eddy Current Sensor","description":"\u003cp\u003eConfigured for shaft displacement and vibration measurement in turbomachinery protection systems, the \u003cstrong\u003eEPRO MMS3120-022-100\u003c\/strong\u003e (\u003cstrong\u003ePR6423\u003c\/strong\u003e Eddy Current Sensor) provides direct physical\/electrical execution. The contactless non-contact transducer converts mechanical distance variations between the probe tip and rotating target surfaces into proportional dynamic high-frequency impedance changes.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eMMS3120-022-100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEPRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany (DE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20 cm x 20 cm x 15 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-35 deg C to +180 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive transducer driven by external signal converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Principle\u003c\/td\u003e\n\u003ctd\u003eContactless eddy current impedance shift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Transducer Interface\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency coaxial integral cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget Material\u003c\/td\u003e\n\u003ctd\u003eFerromagnetic target steel (calibrated for standard alloys)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMonitored Parameters\u003c\/td\u003e\n\u003ctd\u003eRadial\/axial vibration, shaft position, eccentricity, clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHS Code\u003c\/td\u003e\n\u003ctd\u003e85389091\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eRotor Dynamics \u0026amp; Eddy-Current Probe Scaling\u003c\/h3\u003e\n\u003cp\u003eHigh-speed turbomachinery analysis requires linear eddy-current probe scaling aligned with specific target shaft metallurgy and excitation frequency. Accurate static position and dynamic vibration monitoring depend on gap voltage validation (-10 VDC targets) measured at the signal converter output to confirm probe installation at the midpoint of its linear range. Maintaining precise orthogonal probe placement on bearing housings supports effective cross-talk suppression between adjacent radial X and Y vibration channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What output parameter verifies proper static mechanical positioning during installation?\u003c\/p\u003e\n\u003cp\u003eA: Static mechanical gap setup is verified by measuring the driver output voltage, adjusting the sensor insertion depth until reaching an approximate -10 VDC baseline bias voltage.\u003c\/p\u003e\n\u003cp\u003eQ: How does target shaft metallurgy affect transducer output?\u003c\/p\u003e\n\u003cp\u003eA: Variations in magnetic permeability and electrical conductivity alter eddy current penetration depth, requiring calibrated probe scaling matched to the target shaft material composition.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Gap Setting\u003c\/strong\u003e: Thread sensor into mounting fixture by hand until reaching mechanical contact with shaft target, then reverse probe position while monitoring output bias voltage until -10 VDC baseline is achieved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Fastening\u003c\/strong\u003e: Torque external jam nut against mounting surface according to standard thread specifications to maintain mechanical stability under machine vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Protection\u003c\/strong\u003e: Route integral coaxial cable through protective flexible conduit, keeping minimum cable bend radius above 30 mm to prevent shield or conductor degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding\u003c\/strong\u003e: Ground instrument cable shielding at the monitor panel earth bus bar only, maintaining isolation at the machine casing to prevent ground loops.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerson Epro","offers":[{"title":"Default Title","offer_id":50524414836851,"sku":"MMS3120-022-100","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/MMS6310_2_c026729b-25cc-43d4-bdea-b9d0ad5dc32e.png?v=1790231936","url":"https:\/\/www.dcssupplier.com\/products\/epro-mms3120-022-100-eddy-current-sensor","provider":"DcsSupplier Limited","version":"1.0","type":"link"}