{"product_id":"990-08-xx-01-cn-bently-nevada-990-991-series-vibration-transmitter","title":"990-08-XX-01-CN Bently Nevada 990\/991 Series Vibration Transmitter","description":"\u003cp\u003eConfigured for casing-to-shaft vibration signal conditioning in machine protection platforms, the \u003cstrong\u003eBently Nevada 990-08-XX-01-CN\u003c\/strong\u003e (\u003cstrong\u003e990-08-XX-01-CN\u003c\/strong\u003e Vibration Transmitter) provides direct physical and electrical execution of proximity signal processing.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e990-08-XX-01-CN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.44 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e10 cm x 7.5 cm x 5.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-35 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 Ohm at 35 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMechanical Monitoring and Transducer Dynamics\u003c\/h3\u003e\n\u003cp\u003eThe 990 series transmitter employs eddy-current probe scaling to convert raw proximity signals into a proportional 4-20 mA output. Accurate measurement requires gap voltage validation against -10 VDC targets to ensure the probe remains centered within its linear displacement range. The device architecture features integrated cross-talk suppression, enabling operation in high-density proximity arrays without inter-channel interference. Monitoring of rotor dynamics is maintained through high-frequency signal conditioning circuits designed to detect mechanical irregularities while minimizing environmental noise interference.\u003c\/p\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 990-08-XX-01-CN Vibration Transmitter\u003c\/li\u003e\n\u003cli\u003e1 35 mm DIN rail mounting clip assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply: Ensure a regulated DC source of 12 VDC to 35 VDC is connected to the transmitter terminals.\u003c\/li\u003e\n\u003cli\u003eSignal Grounding: Terminate the coaxial cable shield at the designated terminal to maintain EMI\/RFI immunity.\u003c\/li\u003e\n\u003cli\u003eDIN Rail Mounting: Secure the transmitter to a standard 35 mm DIN rail, ensuring the mounting clips are fully locked to prevent vibration-induced loosening.\u003c\/li\u003e\n\u003cli\u003eLoop Integrity: Verify total loop resistance does not exceed 1,000 Ohm at the maximum supply voltage to prevent signal attenuation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCan this transmitter be hot-swapped while the loop is powered?\u003c\/p\u003e\n\u003cp\u003eNo. Power must be removed from the transmitter loop prior to removal or installation to prevent electrical damage or spurious alarm signals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the impact of exceeding 35 VDC on the input?\u003c\/p\u003e\n\u003cp\u003eExceeding the maximum supply voltage will compromise the internal voltage regulation and likely result in permanent hardware failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhy is the -10 VDC gap voltage target mandatory?\u003c\/p\u003e\n\u003cp\u003eThe -10 VDC target centers the probe within its linear range; deviation from this value results in measurement non-linearity and signal clipping.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the \"CN\" suffix affect installation requirements?\u003c\/p\u003e\n\u003cp\u003eYes. The \"CN\" approval mandates adherence to specific hazardous area wiring practices as defined by CSA and ATEX standards for Zone 0 and Zone 2 environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the 23 mA current limit be adjusted by the user?\u003c\/p\u003e\n\u003cp\u003eNo. The 23 mA current limiting is a fixed hardware characteristic designed to protect the output loop during fault conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow should the device be shielded against high-frequency noise?\u003c\/p\u003e\n\u003cp\u003eUse high-quality coaxial cables with the shield properly terminated at the transmitter ground reference to minimize high-frequency noise pickup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the transmitter support field-adjustable frequency response?\u003c\/p\u003e\n\u003cp\u003eThe frequency response is determined by factory-fixed signal conditioning filters and cannot be modified in the field.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs the 1,000 Ohm loop resistance limit absolute?\u003c\/p\u003e\n\u003cp\u003eYes. This limit includes all cable resistance and connected load; exceeding it prevents the transmitter from driving the 4-20 mA signal accurately.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46026782015661,"sku":"990-08-XX-01-CN","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/990-05-50-02-05_1_fd091900-9498-4d6c-8651-0303879a0802.jpg?v=1783409276","url":"https:\/\/www.maxwellplc.com\/products\/990-08-xx-01-cn-bently-nevada-990-991-series-vibration-transmitter","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}