{"product_id":"990-05-70-01-01-bently-nevada-990-series-vibration-transmitter","title":"990-05-70-01-01 Bently Nevada 990 Series Vibration Transmitter","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 990-05-70-01-01\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e990\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eVibration Transmitter, operates as a dedicated hardware component for eddy-current proximity probe signal processing within Turbine Supervisory Instrumentation (TSI) networks. The device accepts input from a proximity transducer system and processes the physical shaft displacement into a proportional 4-20 mA current loop output for direct integration with PLC or DCS platforms.\u003c\/p\u003e\n\u003ch3\u003eOption Selection Profile\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFull Scale Range Option (05):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0-5 mils pp (0-125 um pp) peak-to-peak displacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Length Option (70):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e7.0 meters (23.0 feet).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Option (01):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e35 mm DIN rail clips.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAgency Approval Option (01):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCSA Division 2 certification.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComponent Hardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e990-05-70-01-01\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7.6 cm x 10.2 cm x 5.1 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-35 to +85 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRequires +12 to +35 VDC input at the transmitter terminal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Signal\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4-20 mA loop-powered linear displacement value\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaximum Loop Resistance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1000 ohms including cable at 35 VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCurrent Limiting\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e23 mA typical\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMounting Form Factor\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e35 mm standard DIN rail installation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEddy-Current Probe Scaling and Rotor Dynamics\u003c\/h3\u003e\n\u003cp\u003eThe transmitter contains integrated signal conditioning circuitry calibrated for eddy-current probe scaling matching a 7.0 meter proximity sensor system. It converts raw high-frequency RF signals into a normalized linear voltage curve before executing peak-to-peak detection for rotor dynamics analysis. Accurate gap voltage validation remains a prerequisite during field setup; the installer must verify that the underlying probe remains centered in its linear measurement band to prevent output saturation and maintain precision cross-talk suppression between adjacent orthogonal sensor axes.\u003c\/p\u003e\n\u003ch3\u003eEngineering Technical FAQ\u003c\/h3\u003e\n\u003cp\u003eQ: What is the behavior of the 4-20 mA loop output if the connected eddy-current probe cable short-circuits?\u003c\/p\u003e\n\u003cp\u003eA: In the event of a transducer failure, such as a shorted or open cable, the transmitter activates internal current limiting. The loop current will typically drive to a fault-indicative level near 23 mA or drop below 3.6 mA, allowing the connected DCS or PLC to trip a transducer status alarm.\u003c\/p\u003e\n\u003cp\u003eQ: Can a 5.0 meter proximity probe system be used directly with this 7.0 meter calibrated transmitter?\u003c\/p\u003e\n\u003cp\u003eA: No. The internal oscillator circuitry is tuned strictly to a 7.0 meter total electrical length. Connecting a 5.0 meter probe system will corrupt the eddy-current probe scaling, resulting in significant measurement errors and invalidating the 4-20 mA loop scaling.\u003c\/p\u003e\n\u003cp\u003eQ: How affects the loop supply voltage the maximum allowable loop resistance for the 4-20 mA circuit?\u003c\/p\u003e\n\u003cp\u003eA: The maximum loop resistance is voltage dependent. At the upper limit of 35 VDC, the maximum loop resistance is 1000 ohms. At lower supply voltages, such as 24 VDC, the maximum allowable loop resistance decreases linearly according to Ohm's law constraints to maintain minimum operational voltage at the transmitter terminals.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDIN Rail Mounting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eClip the unit securely onto standard 35 mm DIN rails inside an enclosed, environmental-grade junction box to mitigate dust and moisture exposure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTerminal Wiring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConnect the loop power lines using twisted, shielded pair wiring. Terminate terminal connections securely to prevent intermittent current disruptions that register as false vibration spikes in the process control network.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShielding Termination:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the proximity probe outer shield connects directly to the transmitter coaxial ground. Ground the 4-20 mA loop cable shield exclusively at the receiver side (DCS\/PLC rack) to avoid establishing parasitic ground loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLoop Resistance Verification:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMeasure the total resistance of the signal loop, including the safety barriers and field wire run, to confirm that the sum total stays below 1000 ohms when utilizing a 35 VDC loop source.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackage Inclusions and Kit Composition\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStandard Shipment Contents:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOne 990-05-70-01-01 vibration transmitter module fitted with factory-installed 35 mm DIN rail clips and terminal block interface.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExclusions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis hardware assembly does not ship with proximity probes, extension cables, or external power supplies; these components must be sourced independently.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLogistics and Packaging Controls\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDispatch Speed:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTransferred to global logistical carriers within 2-7 days when payment finish, shipping globally via DHL, FEDEX, or UPS.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosure Standards:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnclosed within heavy-duty, anti-static industrial packaging matrices designed to shield the internal solid-state components from electrostatic discharge (ESD) and mechanical impacts during transport.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46026894180525,"sku":"990-05-70-01-01","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/990-05-70-01-01_1.jpg?v=1779960207","url":"https:\/\/www.maxwellplc.com\/products\/990-05-70-01-01-bently-nevada-990-series-vibration-transmitter","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}