{"product_id":"bently-nevada-990-05-70-01-cn-990-series-2-wire-vibration-transmitter","title":"Bently Nevada 990-05-70-01-CN 990 Series 2-Wire Vibration Transmitter","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEngineered for integration into PLC, DCS, and safety-instrumented machinery protection systems, the \u003cstrong\u003eBently Nevada 990-05-70-01-CN\u003c\/strong\u003e provides continuous proportional radial vibration monitoring via a robust 2-wire current loop. This transmitter conditions signals directly from a compatible proximity probe system to output a standard 4-20 mA analog signal, removing the need for dedicated monitor racks in the control architecture. The \u003cstrong\u003e990-05-70-01-CN\u003c\/strong\u003e is factory-calibrated for high-precision machinery diagnostics and features a 35 mm DIN rail mounting footprint for high-density control cabinet integration.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2-Wire Loop Powered:\u003c\/strong\u003e Operates on standard 24 VDC loop power, reducing field wiring complexity and installation costs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuous 4-20 mA Output:\u003c\/strong\u003e Delivers a stable analog signal proportional to the overall peak-to-peak radial vibration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Prox Input:\u003c\/strong\u003e Interfaces directly with a 3300 NSv proximity transducer system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIN Rail Mounting:\u003c\/strong\u003e Factory fitted with 35 mm DIN rail clips for secure, space-efficient control room mounting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSolid State Design:\u003c\/strong\u003e No moving parts or field adjustments required, ensuring long-term measurement stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eCentrifugal and reciprocating air\/gas compressors\u003c\/li\u003e\n  \u003cli\u003eIndustrial draft fans, blowers, and exhausters\u003c\/li\u003e\n  \u003cli\u003eHigh-speed process pumps and electric motors\u003c\/li\u003e\n  \u003cli\u003eSmall-scale steam turbines and gas expanders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 8px;\"\u003eSKU Segment\u003c\/th\u003e\n        \u003cth style=\"padding: 8px;\"\u003eOption Code\u003c\/th\u003e\n        \u003cth style=\"padding: 8px;\"\u003eTechnical Meaning \/ Configuration\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eFull-scale Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e05\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0 to 5 mils pp (0 to 125 micrometers pp)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eSystem Length Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e70\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e7.0 meters (23.0 feet)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eMounting Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e01\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e35 mm DIN rail clips installed\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eAgency Approval\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCN\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCountry-specific approvals (China\/CN zone compliance)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold; width: 30%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eBently Nevada (Baker Hughes)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e990-05-70-01-CN\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Sensor Compatibility\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3300 NSv Proximity Transducer System\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePower Requirement\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e12 to 35 VDC (Loop voltage at transmitter terminals)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eAnalog Output Signal\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e4-20 mA (proportional to peak-to-peak vibration)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eSystem Calibrated Length\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e7.0 meters (including probe, extension cable, and transmitter)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e-35 to +85 Celsius\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eUnited States (USA)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e1.5 kg (3.3 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e15.2 cm x 12.7 cm x 10.2 cm (6.0 in x 5.0 in x 4.0 in)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 8px;\"\u003eTerminal \/ Connection\u003c\/th\u003e\n        \u003cth style=\"padding: 8px;\"\u003eDesignation\u003c\/th\u003e\n        \u003cth style=\"padding: 8px;\"\u003eFunctional Description\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e+ \/ Loop\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003ePower positive\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e+12 to +35 VDC Supply Line\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e- \/ Return\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSignal Output\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e4-20 mA current output and return line\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCOM\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSensor Common\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCommon reference terminal for proximity probe return\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePROX\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eProbe Input\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eRaw dynamic signal input from 3300 NSv probe\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eSHIELD\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eGrounding Shield\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTo prevent EMI noise; terminate at the instrument end only\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThis transmitter is strictly calibrated to be compatible with a 3300 NSv proximity probe configuration. It cannot be used with standard 3300 XL 8mm or 5mm probes because of different scale factors and sensor gap behaviors. Ensure that the total system length (probe plus extension cable) matches the 7.0-meter configuration specification exactly; mismatching system lengths will result in linearity and scaling calibration errors.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEnsure that the 4-20 mA loop resistance is matched to the input voltage. If the voltage drops below 12 VDC at the transmitter terminal block during a maximum 20 mA loop excursion, the transmitter output will clamp, skewing high-vibration alarms. Avoid routing high-voltage motor power leads in parallel with the 990 transmitter cabling inside cable trays to prevent inductive noise injection.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDuring commissioning, verify the loop current with a high-accuracy digital multimeter in series with the return terminal. A static loop current of approximately 4.0 mA indicates a zero-vibration condition, whereas a current under 3.6 mA indicates a field sensor fault, probe disconnect, or open-circuit loop connection.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e De-energize all associated loop power sources and instrument systems before performing mechanical mounting or field wiring terminations. Failure to isolate power lines can result in control loop short-circuits or accidental tripping of safety interlocks on critical rotating machinery.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eMount the 990-05-70-01-CN onto a rigid 35 mm DIN rail inside a dry, low-vibration enclosure to minimize thermal drift and atmospheric contamination.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the 3300 NSv proximity probe coaxial connector or cable to the designated PROX and COM terminal blocks using correct insulation and torque limits.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eRoute shielded, twisted-pair field cables to the + and - loop terminals, and connect the shield wire to the DCS or PLC instrumentation ground terminal only.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eApply 24 VDC loop power and verify loop current baseline performance at 4 mA with the machine in a shut-down, vibration-free state.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668302426475,"sku":"990-05-70-01-CN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/990-05-70-01-CN-s0zjq0dbtam_f7346470-1d9f-479f-91eb-be930d127408.jpg?v=1765520583","url":"https:\/\/www.plcprotech.com\/ms\/products\/bently-nevada-990-05-70-01-cn-990-series-2-wire-vibration-transmitter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}