{"product_id":"bently-nevada-990-05-50-02-01-vibration-transmitter","title":"Transmetteur de vibration Bently Nevada 990-05-50-02-01","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e990-05-50-02-01\u003c\/strong\u003e provides continuous, proportional linear scaling of proximity probe signals into a simplified two-wire loop architecture. Engineered to serve industrial plant operators looking to streamline monitoring on high-speed assets, this compact component interfaces directly with standard machinery control infrastructure where basic alarm limits and process monitoring calculations are performed. By translating physical shaft movement into a standard analog format, it bridges the gap between field-level eddy current measurements and plant-wide control loops.\u003c\/p\u003e\n\u003cp\u003eConstructed using a ruggedized, fully encapsulated potting compound, the unit functions safely when exposed to severe moisture, shifting temperatures, and airborne industrial contaminants. The system operates out of a single combined module housing, removing traditional multi-component panel steps and lowering the total hardware footings required inside remote field enclosures.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined Signal Processing Housing:\u003c\/strong\u003e Houses the proximity measurement electronics and transmitter circuitry inside a unified enclosure to reduce total component counts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaw Signal Accessibility:\u003c\/strong\u003e Provides unfiltered dynamic diagnostic measurements through a dedicated high-frequency coaxial port without altering the primary loop output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront-Panel Leveling Potentiometers:\u003c\/strong\u003e Contains uncoupled, non-interacting zero and span trimpots situated safely beneath the environmental overlay label for straightforward device loop adjustments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Output Injection Test Pin:\u003c\/strong\u003e Includes an integrated verification path that allows external frequency signals to validate internal circuit operation and loop tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Alarm Suppression Logic:\u003c\/strong\u003e Uses an intelligent Not OK fault verification system to swiftly drop loop current below 3.6 mA, ensuring field wiring degradation or probe breaks do not induce false trips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Humidity Environmental Sealing:\u003c\/strong\u003e Features specialized internal potting that permits full 100% condensing humidity operation without degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Bulkhead Hardware Integration:\u003c\/strong\u003e Comes factory-configured with rugged mounting bolts optimized for direct plate attachment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-speed centrifugal air compressors\u003c\/li\u003e\n\u003cli\u003eCompact industrial process pumps\u003c\/li\u003e\n\u003cli\u003eMedium and small electric induction motors\u003c\/li\u003e\n\u003cli\u003eIndustrial ventilation fans and exhaust blower systems\u003c\/li\u003e\n\u003cli\u003eAsset-level plant-wide vibration trending networks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePart Number Element\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSelected Option Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eHardware Selection Breakdown\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e990\u003c\/td\u003e\n\u003ctd\u003eBase Vibration Transmitter System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eA: Full-Scale Measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e05\u003c\/td\u003e\n\u003ctd\u003e0 to 5 mils peak-to-peak (0 to 125 micrometers pp) range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eB: Calibrated System Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e5.0 meters (16.4 feet) total transducer tracking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eC: Hardware Mounting Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e02\u003c\/td\u003e\n\u003ctd\u003eBulkhead installation screws configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eD: Safety Agency Approvals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e01\u003c\/td\u003e\n\u003ctd\u003eCSA Division 2 certified hazardous location option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCore Category\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eVerified Engineering Parameter Details\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Input Path\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAccepts 1 single channel non-contacting 3300 NSv eddy current probe and matching cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage Window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+12 Vdc to +35 Vdc input measured directly at the transmitter wire blocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Loop Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-wire configuration supplying 4 to 20 mAdc proportional to peak-to-peak displacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoop Error Allocation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% of full-scale across a standard 250 ohm monitoring loop resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTarget Proximity Gap\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMechanical installation gap between 0.5 and 1.75 mm (20 and 55 mils)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImpedance Constraints\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,000 ohms maximum loop resistance threshold at full 35 Vdc input power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOvercurrent Threshold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLimited internally to a maximum of 23 mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoop Fail-Safe Action\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOutput drops below 3.6 mA within 100 microseconds of a probe or connection fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFault Recovery Window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRestores normal analog tracking within 2 to 3 seconds after fault clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower-On Stabilization\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDrops output below 3.6 mA for 2 to 3 seconds during initial system power ramp-up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDynamic Port Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 kohm calibrated source impedance configured specifically for a 10 Mohm testing load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Linear Field\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.4 mm (55 mils) total span beginning 0.25 mm (10 mils) away from target surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScale Factor Performance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.87 mV\/micrometer (200 mV\/mil) ±6.5% typical based on an AISI 4140 steel target\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInherent Noise Floor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 mV peak-to-peak typical noise level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Drift Deviation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eScale factor remains within ±10% of nominal from 0 degC to +70 degC (+32 degF to +158 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Bandwidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz flat response with +0, -3 dB attenuation curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Target Profiling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9.5 mm (0.375 in) minimum target surface diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiagnostic Cable Limit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 meters (10 feet) maximum physical cable distance for the coaxial BNC connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmitter Ambient Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOperating: -35 degC to +85 degC; Storage: -52 degC to +100 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransducer Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOperating and Storage limits rated from -52 degC to +177 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHardware Mass Metrics\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransmitter Unit: 0.43 kg (0.9 lbm); Total System: 0.82 kg (1.8 lbm) typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Composition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSensor tip: Polyphenylene sulfide (PPS); Case body: AISI 303 or 304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada (A Baker Hughes Company)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduction Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited States of America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eWiring Pin Location\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSystem Terminal Designation\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal E1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLoop Power Supply Positive Input (+) \/ 4 to 20 mA Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal E2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLoop Power Supply Negative Input (-) \/ 4 to 20 mA Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal E3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-Isolated Proximitor Dynamic Output (PROX OUT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal E4\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-Isolated Proximitor Dynamic Common Reference (COM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoaxial J2 Plug\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFront-Facing BNC Dynamic Signal Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoaxial J3 Plug\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy Duty Integrated Proximity Probe Input Terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Selection Requirements:\u003c\/strong\u003e Run twisted-pair, shielded 1.0 mm2 (18 AWG) conductors for the primary 4 to 20 mA loop runs. The total length of this field loop wiring path can extend up to a maximum distance of 13 km (8 miles).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Voltage Calculations:\u003c\/strong\u003e Verify field loop resistances do not violate the linear operational boundary formula: RLOOP = 43.5 x (Vps - 12). If total resistance exceeds this computed maximum, the transmitter cannot reach full-scale 20 mA transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Port Phase Orientation:\u003c\/strong\u003e Note that the dynamic voltage signal supplied at the PROX OUT coaxial port is 180 degrees inverted relative to standard Bently Nevada instrumentation systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround Loop Protection:\u003c\/strong\u003e Do not interface standard mains-powered or non-isolated AC diagnostic instruments directly to the raw PROX OUT ports. Use the 122115-01 Test Adapter to introduce necessary isolation and maintain plant safety integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Coupling Restrictions:\u003c\/strong\u003e Ensure mechanical probe casings do not cross the absolute thread engagement maximum profiles (12 mm for M8x1 and 15 mm for M10x1) to eliminate permanent thread binding risks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFCC Rules Enforcement:\u003c\/strong\u003e Verified under Part 15 of standard FCC interference regulations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial EMC Performance:\u003c\/strong\u003e Certified to EN 61000-6-2, EN 61000-6-4, and the general EMC Directive 2014\/30\/EU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplosive Atmosphere Directives:\u003c\/strong\u003e Compliant with ATEX Directive 2014\/34\/EU and RoHS Directive 2011\/65\/EU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Lifecycle Compliance:\u003c\/strong\u003e China RoHS 15-Year Environment Friendly Use Period (EFUP) specification under SJ\/T 11364-2024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine Type Approvals:\u003c\/strong\u003e Certified under ABS 2009 Steel Vessels Rules criteria\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNorth American Safety Marking:\u003c\/strong\u003e cNRTLus certified for Class I, Division 2, Groups A, B, C, and D hazardous fields (T5 @ Ta = +85 degC, Type 4 rating)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternational ATEX\/IECEx Classification:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eII 1 G Ex ia IIC T4 Ga (T4 rating with Ta operational window of -30 degC to +85 degC)\u003c\/li\u003e\n\u003cli\u003eII 3 G Ex ec IIC T4 Gc (T4 rating with Ta operational window of -30 degC to +85 degC)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the practical consequence of exceeding the maximum calculated loop resistance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen the circuit resistance exceeds the limit defined by the supply voltage formula, the system runs out of electrical headroom. As a result, the loop current becomes clamped and fails to reach the 20 mA full-scale limit during high vibration events.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the analog loop current read under 3.6 mA immediately after applying power?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is an automated power-up inhibit cycle that runs for 2 to 3 seconds. It holds the transmitter in a Not OK state to let internal circuits stabilize, preventing initial electrical switch-on spikes from being misread as vibration trips.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the integrated signal defeat logic handle a broken extension cable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe transmitter recognizes the open circuit as a Not OK condition and immediately drops the analog loop current below 3.6 mA within 100 microseconds. This rapid drop alerts the attached PLC or DCS that the measurement channel has failed rather than reporting an actual machine over-vibration event.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan standard diagnostic instruments be hooked directly up to the BNC terminal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOnly battery-powered or fully floating diagnostic instruments should be attached to the non-isolated PROX OUT port. Grounded, AC-powered instruments require the 122115-01 signal isolation adapter to prevent ground loops that could trigger false alarms on the loop network.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666746437995,"sku":"990-05-50-02-01","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-990-05-50-02-01-vibration-transmitter-dhn50edof3l_2202303d-6031-43f4-b352-3c8d2644e6c3.jpg?v=1765446950","url":"https:\/\/www.plcprotech.com\/fr\/products\/bently-nevada-990-05-50-02-01-vibration-transmitter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}