{"product_id":"74712-06-02-03-00-original-bently-nevada-high-temp-velocity-sensor","title":"74712-06-02-03-00 Original Bently Nevada High-Temp Velocity Sensor","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada 74712-06-02-03-00\u003c\/strong\u003e\u003c\/span\u003e is an electrodynamic moving-coil sensor designed for measuring casing vibration in harsh industrial settings. As part of the elevated-temperature \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712 Seismoprobe\u003c\/strong\u003e\u003c\/span\u003e series, this two-wire transducer operates in thermal environments up to +204°C (+400°F). Because it generates an output voltage directly proportional to velocity without external excitation, it provides reliable dynamic signal monitoring across high-vibration power generation and mechanical drive assets.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eConfiguration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eOption structure and configuration code details for part number \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712-06-02-03-00\u003c\/strong\u003e\u003c\/span\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712\u003c\/strong\u003e\u003c\/span\u003e — Base Model: High-Temperature Two-Wire Velocity Seismoprobe Transducer\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e-06\u003c\/strong\u003e — Mounting Angle \u0026amp; Minimum Frequency Option: 0° ±100° calibration orientation; 10 Hz (600 cpm) minimum operating frequency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-02\u003c\/strong\u003e — Mounting Base Option: Circular base with 1\/4-20 UNC threaded mounting stud\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-03\u003c\/strong\u003e — Connector Option: Top-mount 2-pin connector interface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-00\u003c\/strong\u003e — Agency Approval Option: Standard industrial construction (no hazardous area approvals)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications Matrix\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 35%;\"\u003e\u003cstrong\u003eBrand \u0026amp; Manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712-06-02-03-00\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712 High-Temp Seismoprobe Series\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Technology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwo-wire moving-coil electrodynamic velocity pickup (self-generating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibrated Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 mV\/mm\/s (500 mV\/in\/s) ±5% with 10 kΩ load at specified calibration angle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity Temperature Shift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2% per °C temperature coefficient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDynamic Operating Displacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.54 mm (0.100 in) peak-to-peak maximum physical displacement limit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplitude Linearity \u0026amp; Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±5% linearity from 0.254 to 127 mm\/s (0.01 to 5.0 in\/s) at 100 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Limits \u0026amp; Orientation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Hz to 1000 Hz; calibrated for 0° ±100° vertical axis mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoil Impedance Parameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25 kΩ ±5% coil resistance; 125 mH typical locked coil inductance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Thermal Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-29°C to +204°C (-20°F to +400°F) continuous operational range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMechanical \u0026amp; Environmental Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 g peak shock along non-sensitive axis; 2000 m maximum operating altitude\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhysical Dimensions \u0026amp; Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeight: 102 mm (4.0 in) typical; Diameter: 41 mm (1.6 in); Mass: 300 g (10.5 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eVariant Comparison \u0026amp; Engineering Recommendations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eComparing physical interface options within the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712 Seismoprobe\u003c\/strong\u003e\u003c\/span\u003e product line:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Unit:\u003c\/strong\u003e \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712-06-02-03-00\u003c\/strong\u003e\u003c\/span\u003e utilizes a standard 1\/4-20 UNC circular base stud (-02) paired with a top-mount 2-pin electrical connector (-03).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternative Unit:\u003c\/strong\u003e Compare with \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/74712-06-05-04-00-bently-nevada-high-temperature-two-wire-transducer\"\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712-06-05-04-00\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e. That model features a direct 1\/2-20 UNF stud integral base without a separate circular flange (-05) and a side-mount connector (-04).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEngineering Selection Tip:\u003c\/strong\u003e Select the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712-06-02-03-00\u003c\/strong\u003e\u003c\/span\u003e when overhead clearance above the bearing housing is unrestricted, enabling straight-line cable routing. If overhead space is limited by machine guards or insulation blankets, specify \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/74712-06-05-04-00-bently-nevada-high-temperature-two-wire-transducer\"\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712-06-05-04-00\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e to utilize its side-exit connection.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Applications \u0026amp; Machinery Health Diagnostics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCasing vibration measurements on steam turbine high-pressure steam chests and bearing pedestals\u003c\/li\u003e\n\u003cli\u003eAbsolute structural velocity monitoring on hot gas expanders and boiler feed pumps\u003c\/li\u003e\n\u003cli\u003eVibration tracking on induced draft (ID) fans operating at high thermal levels\u003c\/li\u003e\n\u003cli\u003eIdentification of unbalance, misalignment, structural resonance, and mechanical looseness\u003c\/li\u003e\n\u003cli\u003eTime-waveform and FFT spectral analysis via 3500\/42M or 3300 series rack machinery monitors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB Insights \u0026amp; Field Experience\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUnlike piezoceramic accelerometers with internal integration amplifiers that fail when ambient temperatures exceed 121°C, the moving-coil architecture of the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712-06-02-03-00\u003c\/strong\u003e\u003c\/span\u003e maintains functional integrity up to +204°C (+400°F). In steam turbine applications, our engineers frequently observe signal distortion caused by improper base tightening. Always torque the 1\/4-20 stud to exactly 5.6 N·m (50 in·lb). Insufficient torque introduces mechanical contact resonances, while over-tightening can distort the outer shell and bind the moving mass inside the magnetic core.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What distinguishes the 74712 transducer series from standard 9200 series velocity probes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1: The \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e74712\u003c\/strong\u003e\u003c\/span\u003e model uses high-temperature internal wire insulation and internal dampening materials rated up to +204°C (+400°F), whereas standard 9200 units are capped at +121°C (+250°F).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Why is proper mounting orientation critical for the 74712-06-02-03-00?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2: Option code -06 designates a 0° ±100° vertical axis calibration. Installing this unit horizontally causes gravity to pull the suspended coil against its housing walls, dampening output signals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What maximum field cable distance can be run from this sensor to the monitor rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3: Field wiring can extend up to 305 meters (1,000 feet) to a 3500 monitor. Review system manuals for high-frequency attenuation calculations on cable runs exceeding this distance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Is an external power supply required to drive this vibration transducer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA4: No. Moving-coil electrodynamic transducers generate their own voltage signal through electromagnetic induction as the casing vibrates, requiring no external excitation power.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: How do I verify signal polarity during field cable installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA5: The transducer is wired so that Pin A goes positive with respect to Pin B whenever physical motion moves toward the connector interface.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOrder Fulfillment, Packaging \u0026amp; Warranty Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Condition:\u003c\/strong\u003e Brand new, unused original unit in factory packaging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e 1x \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada 74712-06-02-03-00\u003c\/strong\u003e\u003c\/span\u003e High-Temperature Velocity Transducer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder Handling:\u003c\/strong\u003e Rapid warehouse processing with dispatch within 24 to 48 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpress Shipping:\u003c\/strong\u003e Global priority delivery managed by international couriers (FedEx, UPS, DHL)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Coverage:\u003c\/strong\u003e Fully supported by a 12-month comprehensive factory warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/9200_74712.png?v=1784875507\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013970911414,"sku":"74712-06-02-03-00","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/Bently920074712_3_c861cb86-97a7-4f6c-be4c-e6c2b5bf687f.jpg?v=1785397815","url":"https:\/\/www.plcsparehub.com\/products\/74712-06-02-03-00-original-bently-nevada-high-temp-velocity-sensor","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}