{"product_id":"bently-nevada-330400-01-05-three-wire-piezoelectric-accelerometer","title":"Bently Nevada 330400-01-05 Three-Wire Piezoelectric Accelerometer","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 330400-01-05\u003c\/strong\u003e is a \u003cstrong\u003ethree-wire piezoelectric accelerometer\u003c\/strong\u003e designed for critical machinery applications where \u003cstrong\u003ecasing acceleration measurements\u003c\/strong\u003e are required, such as gear mesh monitoring. It meets the requirements of \u003cstrong\u003eAPI Standard 670\u003c\/strong\u003e for accelerometers and provides an amplitude range of \u003cstrong\u003e50 g peak\u003c\/strong\u003e with a sensitivity of \u003cstrong\u003e100 mV\/g\u003c\/strong\u003e. The \u003cstrong\u003e-01\u003c\/strong\u003e suffix specifies a \u003cstrong\u003e¼-28 UNF integral stud mounting\u003c\/strong\u003e, and the \u003cstrong\u003e-05\u003c\/strong\u003e suffix provides \u003cstrong\u003emultiple hazardous area approvals\u003c\/strong\u003e (CSA, ATEX, IECEx) for global deployment.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Piezoelectric Accelerometer \/ Acceleration Transducer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Thread:\u003c\/strong\u003e ¼-28 UNF integral stud\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Approvals:\u003c\/strong\u003e 05 = Multiple (CSA, ATEX, IECEx)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity:\u003c\/strong\u003e 10.2 mV\/m\/s² (100 mV\/g) ±5%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcceleration Range:\u003c\/strong\u003e 490 m\/s² (50 g) peak overall\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplitude Linearity:\u003c\/strong\u003e ±1% to 490 m\/s² (50 g) peak\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 10 Hz to 15 kHz (±3 dB); 30 Hz to 10 kHz (±10%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroadband Noise Floor:\u003c\/strong\u003e 0.039 m\/s² (0.004 g) rms (10 Hz to 15 kHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounted Resonant Frequency:\u003c\/strong\u003e \u0026gt;30 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransverse Sensitivity:\u003c\/strong\u003e \u0026lt;5% of axial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Sensitivity:\u003c\/strong\u003e -11% to +3% typical over operating range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -55°C to +121°C (-67°F to +250°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -55°C to +121°C (-67°F to +250°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelative Humidity:\u003c\/strong\u003e 100% condensing (case hermetically sealed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP Rating:\u003c\/strong\u003e Equivalent to IP68 (sensor only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Requirements:\u003c\/strong\u003e -24 ±0.5 Vdc; 2 mA nominal bias current\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Bias Voltage:\u003c\/strong\u003e -8.5 ±0.5 Vdc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Case isolated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Material:\u003c\/strong\u003e 316L stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 23 mm (0.93 in) diameter x 59 mm (2.3 in) height (including stud)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 100 g (3.5 oz) typical (without cable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Torque:\u003c\/strong\u003e 4.1 N·m (3.0 ft·lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShock Survivability:\u003c\/strong\u003e 49,050 m\/s² (5,000 g) peak maximum\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAPI 670 compliant\u003c\/strong\u003e — meets the stringent requirements of the American Petroleum Institute Standard 670 for accelerometers, ensuring acceptance in oil \u0026amp; gas, petrochemical, and power generation specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple hazardous area approvals\u003c\/strong\u003e — CSA (Class I, Div 1 Groups A-D), ATEX (Ex ia IIC T4 Ga), and IECEx certifications enable installation in North American, European, and international hazardous locations without additional barriers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase-isolated design\u003c\/strong\u003e — eliminates ground loop issues and electrical noise pickup from the machine casing, improving signal integrity in electrically noisy environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHermetically sealed 316L stainless steel case\u003c\/strong\u003e — withstands 100% condensing humidity and corrosive atmospheres; equivalent to IP68 rating for the sensor body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide frequency response\u003c\/strong\u003e — 10 Hz to 15 kHz captures gear mesh frequencies, bearing defect frequencies, and blade pass frequencies on most rotating equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow noise floor\u003c\/strong\u003e — 0.004 g rms broadband noise enables early detection of incipient bearing and gear faults before they reach alarm thresholds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGear mesh monitoring on large gearboxes and speed reducers\u003c\/li\u003e\n\u003cli\u003eBearing housing acceleration measurement on turbines, compressors, and pumps\u003c\/li\u003e\n\u003cli\u003eReciprocating compressor crosshead acceleration monitoring\u003c\/li\u003e\n\u003cli\u003eMachine tool spindle vibration monitoring\u003c\/li\u003e\n\u003cli\u003eWind turbine gearbox and generator bearing health monitoring\u003c\/li\u003e\n\u003cli\u003eHazardous area installations in refineries, offshore platforms, and chemical plants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify hazardous area classification\u003c\/strong\u003e — confirm your zone (Class I, Div 1 or ATEX Zone 0\/1) and ensure the -05 approval suffix matches your safety documentation and barrier requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare mounting surface\u003c\/strong\u003e — machine a flat, smooth surface (32 μin rms or better) on the bearing housing or machine casing. Clean with isopropyl alcohol to remove oil and debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap mounting hole\u003c\/strong\u003e — drill and tap a ¼-28 UNF hole perpendicular to the measured surface. Hole depth must accommodate the integral stud plus one full thread engagement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply mounting torque\u003c\/strong\u003e — tighten to \u003cstrong\u003e4.1 N·m (3.0 ft·lb)\u003c\/strong\u003e using a torque wrench. Overtightening cracks the piezoelectric crystal; undertightening introduces base strain error and reduces high-frequency response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect cable\u003c\/strong\u003e — use Bently Nevada interconnect cable (130539, 16925, or 16710 series) with the 3-pin MIL-C-5015 connector. Ensure the connector is fully threaded and sealed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply -24 Vdc power\u003c\/strong\u003e — connect to a regulated -24 Vdc supply. Verify output bias voltage of -8.5 Vdc and sensitivity of 100 mV\/g using a calibrated vibration source or shaker table.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoute cable away from EMI\u003c\/strong\u003e — maintain 300 mm separation from VFD cables, motor leads, and welding cables. Use shielded cable with the shield grounded at the monitor end only.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 330400-01-05 and 330400-01-00?\u003c\/strong\u003e\u003cbr\u003e\nA: The \u003cstrong\u003e330400-01-05\u003c\/strong\u003e has \u003cstrong\u003emultiple hazardous area approvals\u003c\/strong\u003e (CSA, ATEX, IECEx), while the \u003cstrong\u003e330400-01-00\u003c\/strong\u003e has \u003cstrong\u003eno agency approvals\u003c\/strong\u003e. Both have the same ¼-28 UNF mounting thread and 100 mV\/g sensitivity. Choose -05 for hazardous area installations; choose -00 for general-purpose, non-hazardous applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 330400-01-05 and 330400-02-05?\u003c\/strong\u003e\u003cbr\u003e\nA: The \u003cstrong\u003e-01\u003c\/strong\u003e suffix indicates \u003cstrong\u003e¼-28 UNF integral stud\u003c\/strong\u003e mounting; the \u003cstrong\u003e-02\u003c\/strong\u003e suffix indicates \u003cstrong\u003eM8 x 1 integral stud\u003c\/strong\u003e mounting. Both have the same electrical specifications and -05 approvals. Choose based on your machine's threaded hole standard (Imperial vs. Metric).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this accelerometer for velocity measurement?\u003c\/strong\u003e\u003cbr\u003e\nA: While the output can be integrated to velocity, \u003cstrong\u003eBently Nevada does not recommend this\u003c\/strong\u003e for high-quality velocity measurements. Integration amplifies low-frequency noise and can produce misleading results. For velocity monitoring, use the \u003cstrong\u003e330500 Velomitor Sensor\u003c\/strong\u003e instead.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What cable should I use with this accelerometer?\u003c\/strong\u003e\u003cbr\u003e\nA: Bently Nevada recommends \u003cstrong\u003e130539-XX\u003c\/strong\u003e (18 AWG shielded), \u003cstrong\u003e16925-XX\u003c\/strong\u003e (22 AWG shielded), or \u003cstrong\u003e16710-XX\u003c\/strong\u003e (22 AWG armored) interconnect cables. Order cable length in 1-foot increments from 6 ft to 99 ft. Maximum total cable length is 305 meters (1,000 ft) with no signal degradation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is a mounting base required?\u003c\/strong\u003e\u003cbr\u003e\nA: For sensors with serial numbers \u003cstrong\u003epreceded by the letter \"G\"\u003c\/strong\u003e (shipped after April 2004), the mounting base is \u003cstrong\u003eoptional\u003c\/strong\u003e as base strain sensitivity is already low (0.005 g\/μstrain). For older sensors (no \"G\" prefix), Bently Nevada \u003cstrong\u003estrongly recommends\u003c\/strong\u003e using mounting base 37439-01 to reduce base strain error from 0.100 g\/μstrain to 0.0005 g\/μstrain.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChoose \u003cstrong\u003e330400-01-05\u003c\/strong\u003e when you need \u003cstrong\u003e¼-28 UNF mounting\u003c\/strong\u003e and \u003cstrong\u003ehazardous area approvals\u003c\/strong\u003e for global deployment.\u003c\/li\u003e\n\u003cli\u003eIf your machine has \u003cstrong\u003eM8 x 1 threaded holes\u003c\/strong\u003e, select \u003cstrong\u003e330400-02-05\u003c\/strong\u003e to avoid adapter bushings and potential loosening issues.\u003c\/li\u003e\n\u003cli\u003eFor \u003cstrong\u003enon-hazardous areas\u003c\/strong\u003e, save cost with \u003cstrong\u003e330400-01-00\u003c\/strong\u003e (¼-28 UNF, no approvals) or \u003cstrong\u003e330400-02-00\u003c\/strong\u003e (M8 x 1, no approvals).\u003c\/li\u003e\n\u003cli\u003eIf you need \u003cstrong\u003e75 g peak range\u003c\/strong\u003e and \u003cstrong\u003e25 mV\/g sensitivity\u003c\/strong\u003e for high-g applications, consider the \u003cstrong\u003e330425\u003c\/strong\u003e series instead of 330400.\u003c\/li\u003e\n\u003cli\u003eAlways use a \u003cstrong\u003etorque wrench\u003c\/strong\u003e set to 4.1 N·m (3.0 ft·lb) during installation — overtightening is the leading cause of accelerometer failure in the field.\u003c\/li\u003e\n\u003cli\u003eVerify your \u003cstrong\u003esignal conditioner or monitor input\u003c\/strong\u003e meets the 10 kΩ minimum load requirement to prevent signal attenuation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":53947055538360,"sku":"330400-01-05","price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/330400-01-05_1_r180.png?v=1787042349","url":"https:\/\/www.globalpetroparts.com\/products\/bently-nevada-330400-01-05-three-wire-piezoelectric-accelerometer","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}