{"product_id":"990-05-50-02-00-bently-nevada-990-vibration-transmitter","title":"990-05-50-02-00 | Bently Nevada | 990 Vibration Transmitter","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThis two-wire, loop-powered device is designed to interface with a non-contacting \u003cstrong\u003e3300 NSv proximity probe\u003c\/strong\u003e and its matching extension cable. The \u003cstrong\u003e990-05-50-02-00\u003c\/strong\u003e conditions the incoming proximity sensor signal into appropriate peak-to-peak vibration amplitude engineering units, converting it into a proportional 4 to 20 mA industry-standard current loop output. This analog output is transmitted directly to a machinery control system, such as a PLC or DCS, where standard protection alarming and machinery logic are performed.\u003c\/p\u003e\n\u003cp\u003eThe unit integrates the functionality of a \u003cstrong\u003eProximitor Sensor\u003c\/strong\u003e directly into its housing, requiring no separate external driver. It features a non-isolated \u003cstrong\u003ePROX OUT\u003c\/strong\u003e coaxial connector and terminal block connection to supply a dynamic vibration and gap voltage signal for troubleshooting and machinery diagnostic operations. Built with potted construction, the device provides robust environmental protection suitable for highly humid or condensing locations.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Proximitor Sensor:\u003c\/strong\u003e Combines full proximity probe driver capabilities inside the transmitter housing to eliminate external signal conditioning modules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 4 to 20 mA Output:\u003c\/strong\u003e Transmits a continuous analog current loop proportional to peak-to-peak vibration amplitude over a standard two-wire configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Signal Diagnostic Interfaces:\u003c\/strong\u003e Provides non-isolated \u003cstrong\u003ePROX OUT\u003c\/strong\u003e and COM terminals plus an integrated coaxial connector for direct connection to diagnostic tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Not OK \/ Signal Defeat Circuit:\u003c\/strong\u003e Drops the loop current output to less than 3.6 mA within 100 microseconds of a probe or cable fault to prevent false control system alarms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Interacting Field Adjustments:\u003c\/strong\u003e Accessible zero and span potentiometers underneath the device label facilitate straightforward field loop adjustments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated Test Input Pin:\u003c\/strong\u003e Allows for rapid on-site verification of the loop output current by using an external function generator as the input signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotted Enclosure Construction:\u003c\/strong\u003e Fully sealed housing protects internal electronic components against up to 100% condensing humidity conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentrifugal air compressors\u003c\/li\u003e\n\u003cli\u003eSmall industrial pumps\u003c\/li\u003e\n\u003cli\u003eElectric motor machinery monitoring\u003c\/li\u003e\n\u003cli\u003eCooling and ventilation fans\u003c\/li\u003e\n\u003cli\u003eOEM machinery control system integration\u003c\/li\u003e\n\u003cli\u003eOverall vibration trending and peak-to-peak amplitude data acquisition\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\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFull-Scale Option (AA)\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSystem Length Option (BB)\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eMounting Option (CC)\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eAgency Approval Option (DD)\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003e990-05-50-02-00\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e05 (0-5 mils pp \/ 0-125 um pp)\u003c\/td\u003e\n\u003ctd\u003e50 (5.0 meters \/ 16.4 feet)\u003c\/td\u003e\n\u003ctd\u003e02 (Bulkhead screws)\u003c\/td\u003e\n\u003ctd\u003e00 (Not required)\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\u003cp\u003eSpecifications apply at +22 Celsius (+72 Fahrenheit) using a 3300 NSv Probe and Extension Cable, and an AISI 4140 steel target unless specified otherwise.\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification Values\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical \/ Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInput Requirements\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc input at the transmitter terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eSignal Output\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mAdc over specified full-scale range (2-wire configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eLoop Accuracy\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% over specified full-scale range across 250 Ohm loop resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 Ohm including cable at 35 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eCurrent Limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003ePower-up Inhibit\u003c\/td\u003e\n\u003ctd\u003eSignal output stays below 3.6 mA for 2 to 3 seconds after power application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDynamic Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProx Out Linear Range\u003c\/td\u003e\n\u003ctd\u003e1.4 mm (55 mils), starting approx 0.25 mm (10 mils) from target surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eIncremental Scale Factor\u003c\/td\u003e\n\u003ctd\u003e7.87 mV\/um (200 mV\/mil) ±6.5% typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd\u003e10 kOhm output impedance calibrated for a 10 MOhm load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz +0, -3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTypical Noise Level\u003c\/td\u003e\n\u003ctd\u003e50 mV pp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-35 Celsius to +85 Celsius (-31 Fahrenheit to +185 Fahrenheit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-52 Celsius to +100 Celsius (-62 Fahrenheit to +212 Fahrenheit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e100% condensing, non-submerged (requires coaxial connector protection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMechanical\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransducer Tip Material\u003c\/td\u003e\n\u003ctd\u003ePolyphenylene sulfide (PPS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTransducer Case Material\u003c\/td\u003e\n\u003ctd\u003eAISI 303 or 304 Stainless Steel (SST)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTransmitter Weight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTotal System Weight\u003c\/td\u003e\n\u003ctd\u003e0.82 kg (1.8 lbm) typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e100.1 mm x 73.9 mm x 42.6 mm (3.94 in x 2.91 in x 1.68 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGeneral\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eBently Nevada (A Baker Hughes Company)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTarget Requirements\u003c\/td\u003e\n\u003ctd\u003eMinimum 9.5 mm (0.375 in) diameter, AISI 4140 steel target\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\u003eTerminal \/ Connector\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction\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\u003ePower Supply (+) \/ 4 to 20 mA loop input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal E2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Supply (-) \/ Loop return 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\u003ePROX OUT dynamic signal terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal E4\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCOM terminal reference for PROX OUT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eJ2 BNC Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoaxial PROX OUT dynamic transducer signal for portable diagnostics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eJ3 Coaxial Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInput connection from the 3300 NSv proximity probe extension cable\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 Specifications:\u003c\/strong\u003e Use 1.0 mm2 (18 AWG), 2-conductor, twisted, shielded cable for the 4 to 20 mA current loop and field terminal connections. The maximum loop cable run distance is 13 km (8 miles).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply Voltage:\u003c\/strong\u003e Maintain a minimum voltage of +17 Vdc at the transmitter terminal when accounting for full loop resistance to prevent clipping at the 20 mA limit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Gap Adjustment:\u003c\/strong\u003e Ensure the matched 3300 NSv proximity probe is gapped between 0.5 mm and 1.75 mm (20 and 55 mils) from the target surface during installation to ensure valid full-scale operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Instrument Isolation:\u003c\/strong\u003e The PROX OUT signal is not electrically isolated from the 4 to 20 mA loop. Do not connect grounded, AC-powered test equipment directly to the BNC or terminal strips as it will cause loop interference or false trips. Connect via a 122115-01 Test Adapter to safely isolate and invert the signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulkhead Mounting Alignment:\u003c\/strong\u003e Mount the transmitter base securely to a flat surface using the four integrated bulkhead mounting holes and the supplied 6-32 x 1.326 screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture Protection:\u003c\/strong\u003e Install connector protector sleeves over all ClickLoc coaxial junctions to maintain sealing integrity in environments subject to high humidity or condensation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFCC:\u003c\/strong\u003e Complies with Part 15 of the FCC Rules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMC Standards:\u003c\/strong\u003e EN 61000-6-2, EN 61000-6-4, and EMC Directive 2014\/30\/EU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eATEX \/ IECEx:\u003c\/strong\u003e ATEX Directive 2014\/34\/EU; Ex ia IIC T4 Ga, and Ex ec IIC T4 Gc (Ta = -30 Celsius to +85 Celsius).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoHS:\u003c\/strong\u003e RoHS Directive 2011\/65\/EU and China RoHS with a 15-year EFUP designation under SJ\/T 11364-2024.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaritime:\u003c\/strong\u003e ABS 2009 Steel Vessels Rules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNorth American Approvals:\u003c\/strong\u003e cNRTLus Class I, Division 2, Groups A, B, C, D (T5 @ Ta = +85 Celsius, Type 4 Enclosure).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the behavior of the output loop current when a proximity probe is damaged or disconnected?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe transmitter is equipped with an internal Not OK and Signal Defeat circuit. If a faulty probe or open connection is experienced, the loop output current automatically drops to less than 3.6 mA within 100 microseconds to suppress false machine alarms in the control system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run standard plant diagnostic software using the 4 to 20 mA output of this transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 4 to 20 mA signal provides overall peak-to-peak trending data only and is not compatible with plant-wide dynamic diagnostic systems like System 1. The analog output cannot determine the phase of vibration or handle specialized parameters like gap alarms or Trip Multiply.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is an external test adapter required when connecting an oscilloscope to the PROX OUT terminal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe PROX OUT signal shares a common ground reference with the non-isolated 4 to 20 mA loop current. Connecting grounded, AC-powered diagnostic tools directly to the transmitter can alter the loop current and cause accidental machinery shutdowns, so an isolating test adapter must be used\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668303540587,"sku":"990-05-50-02-00","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/990-05-50-02-00-q0sixid00vm_a524031d-e1ba-4b33-abbc-40a31b60a4e9.jpg?v=1765520623","url":"https:\/\/www.plcprotech.com\/products\/990-05-50-02-00-bently-nevada-990-vibration-transmitter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}