{"product_id":"bently-nevada-74712-06-05-04-00-high-temp-velocity-transducer","title":"Bently Nevada 74712-06-05-04-00 High-Temp Velocity Transducer","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eWhen excessive vibration threatens machinery reliability, the \u003cstrong\u003eBently Nevada 74712-06-05-04-00\u003c\/strong\u003e provides precise measurement using proven moving-coil technology. This high-temperature two-wire transducer from the Seismoprobe family measures absolute vibration of bearing housings, casings, or structures. The \u003cstrong\u003eBently Nevada 74712-06-05-04-00\u003c\/strong\u003e offers a voltage output directly proportional to vibration velocity, making it a trusted choice for critical rotating equipment monitoring.\u003c\/p\u003e\u003cp\u003eUnlike solid-state velocity transducers that can be overly sensitive to impact or impulsive excitation, the moving-coil design of the \u003cstrong\u003e74712-06-05-04-00\u003c\/strong\u003e delivers reliable readings in environments with sudden shocks. It requires no external power, simplifying installation for portable measurement applications.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications Breakdown\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e20 mV\/mm\/s (500 mV\/in\/s) ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating \u0026amp; Storage Temperature\u003c\/td\u003e\n\u003ctd\u003e-29°C to +204°C (-20°F to +400°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Operating Range\u003c\/td\u003e\n\u003ctd\u003e2.54 mm (0.100 in) peak-to-peak max displacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVelocity Range\u003c\/td\u003e\n\u003ctd\u003e25 mm\/s (1 in\/s) at 100Hz with 10kΩ load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplitude Linearity\u003c\/td\u003e\n\u003ctd\u003e±5% from 0.01 to 5.0 in\/s (0.254-127 mm\/s) at 100Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock Resistance\u003c\/td\u003e\n\u003ctd\u003e50 g peak max along non-sensitive axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Resistance\u003c\/td\u003e\n\u003ctd\u003e1.25 kΩ ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocked Coil Inductance\u003c\/td\u003e\n\u003ctd\u003e125 mH typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length (max)\u003c\/td\u003e\n\u003ctd\u003e305 m (1000 ft) to Bently Nevada 3300\/3500 monitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Options\u003c\/td\u003e\n\u003ctd\u003e1\/2-20 UNF-3A stud, or 8-32 threaded studs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Torque\u003c\/td\u003e\n\u003ctd\u003e5.6 N·m (50 in·lb) for 1\/2-20 base; 1.41 N·m (12.5 in·lb) for 8-32 studs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHazardous Area Approvals\u003c\/td\u003e\n\u003ctd\u003ecNRTLus: Class I Div 1 Groups A-D T6; Ex ia IIC T6 Ga; AEx ia IIC T6 Ga\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eBently Nevada 74712-06-05-04-00\u003c\/strong\u003e excels in high-temperature environments such as steam turbines, gas compressors, and pumps. Its moving-coil design minimizes false readings from impulsive shocks—common in heavy machinery startup and shutdown. This transducer pairs well with Bently Nevada 3300 and 3500 monitoring systems for continuous vibration tracking.\u003c\/p\u003e\u003cp\u003eFor example, in a petrochemical plant, the \u003cstrong\u003e74712-06-05-04-00\u003c\/strong\u003e can monitor bearing housing vibration on a high-temperature pump operating at 150°C, providing early warning of imbalance or misalignment without signal degradation from thermal effects.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the \u003cstrong\u003eBently Nevada 74712-06-05-04-00\u003c\/strong\u003e using the provided 1\/2-in 20 UNF-3A stud and tighten to 5.6 N·m. The side-mount connector option (04) allows flexible cable routing. For best accuracy, orient the transducer at the angle selected during calibration (0° ±100, 10 Hz minimum operating frequency).\u003c\/p\u003e\u003cp\u003eMaximum lead wire length is 305 m—consult the manual for frequency roll-off at longer runs. Ensure the output is taken across pins A and B with a 10 kΩ calibration load. For hazardous areas, comply with the specified Ex ia or Ex ec parameters (Ui=28V, Ii=16mA for Ex ia).\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e74712-06-05-04-00\u003c\/strong\u003e requires minimal maintenance due to its robust moving-coil construction. Operating temperature ranges from -29°C to +204°C, and the transducer withstands 95% relative humidity (noncondensing). Periodic inspection of the cable for abrasion or damage is recommended. The unit is designed for long service life even in harsh environments, reducing total cost of ownership.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore purchasing the \u003cstrong\u003eBently Nevada 74712-06-05-04-00\u003c\/strong\u003e, verify the mounting base option (05: no base, 1\/2-20 stud) and connector option (04: side mount) match your installation. This model includes CSA agency approval (option 01). Ensure compatibility with your monitoring system—designed for Bently Nevada 3300\/3500 monitors. For a reliable source, consider ubest101, which offers authentic Bently Nevada parts with verified specifications.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44410672644195,"sku":"74712-06-05-04-00","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/Bently_2074712_20_281_29.jpg?v=1785191161","url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-74712-06-05-04-00-high-temp-velocity-transducer","provider":"PLC Source PRO","version":"1.0","type":"link"}