{"product_id":"990-08-xx-01-05-bently-nevada-990-991-series-vibration-transmitter","title":"990-08-XX-01-05 Bently Nevada 990\/991 Series Vibration Transmitter","description":"\u003cp\u003eThe \u003cstrong\u003eBently Nevada 990-08-XX-01-05\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e990\u003c\/strong\u003e Vibration Transmitter, operates as a dedicated hardware component for casing-to-shaft vibration signal conditioning within machine protection platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e990: Base Model (Vibration Transmitter)\u003c\/li\u003e\n\u003cli\u003e08: Signal processing configuration\u003c\/li\u003e\n\u003cli\u003eXX: Variable length\/options\u003c\/li\u003e\n\u003cli\u003e01: Mounting hardware configuration\u003c\/li\u003e\n\u003cli\u003e05: Agency approval rating\u003c\/li\u003e\n\u003c\/ul\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-01-05\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 x 7.5 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\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz (+0, -3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTransducer Dynamics \u0026amp; Signal Conditioning\u003c\/h3\u003e\n\u003cp\u003eThe 990 series transmitter employs eddy-current probe scaling to convert proximity signals into a proportional output. Proper operation relies on gap voltage validation against -10 VDC targets to maintain functionality within the linear range of the transducer. The device architecture incorporates cross-talk suppression, allowing multiple transmitters to operate in high-density proximity arrays without interference. Monitoring of rotor dynamics requires a target surface with a minimum 9.5 mm diameter to ensure signal accuracy.\u003c\/p\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 990-08-XX-01-05 Vibration Transmitter\u003c\/li\u003e\n\u003cli\u003e1 Standard mounting hardware kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply: Ensure a stable DC source between 12 VDC and 35 VDC is connected to the transmitter terminals.\u003c\/li\u003e\n\u003cli\u003eSignal Grounding: Terminate the coaxial cable shield at the designated ground reference to maintain signal integrity and satisfy EMI protection requirements.\u003c\/li\u003e\n\u003cli\u003eEnvironmental Protection: While rated for Zone 2 or Div 2 hazardous areas, ensure the transmitter is housed in an enclosure suitable for the specific site environmental exposure levels.\u003c\/li\u003e\n\u003cli\u003eTarget Alignment: Verify that the monitored shaft or target surface is centered relative to the probe to avoid non-linear measurement effects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the consequence of a target surface diameter less than 9.5 mm?\u003c\/p\u003e\n\u003cp\u003eA surface smaller than 9.5 mm causes signal non-linearity and measurement errors, as the eddy-current field will extend beyond the target edges, resulting in inaccurate vibration readings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this transmitter support hot-swapping during operation?\u003c\/p\u003e\n\u003cp\u003eThe device does not support hot-swapping; power must be disconnected from the transmitter loop to avoid potential current surges or spurious alarm trips in the monitoring system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the impact of exceeding 35 VDC at the input terminal?\u003c\/p\u003e\n\u003cp\u003eOperating above the maximum 35 VDC limit will damage internal voltage regulation circuitry and may result in permanent failure of the transmitter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the frequency response be adjusted beyond 6,000 Hz?\u003c\/p\u003e\n\u003cp\u003eThe 6,000 Hz limit is a factory-defined characteristic of the internal signal conditioning filters; it cannot be modified by the user in the field.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does the storage temperature range affect deployment?\u003c\/p\u003e\n\u003cp\u003eThe -52 deg C to +100 deg C storage range ensures component viability for long-term storage in extreme climates, provided the unit is kept in its original sealed packaging.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAre shielding requirements strictly dependent on the cable length?\u003c\/p\u003e\n\u003cp\u003eShielding is required regardless of cable length to maintain RFI\/EMI immunity, particularly in environments with high-frequency industrial noise or radio interference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhy is the -10 VDC gap voltage target necessary for this transmitter?\u003c\/p\u003e\n\u003cp\u003eIt ensures the probe is centered within its linear displacement range; deviations from this target shift the measurement baseline and can lead to signal clipping.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs the 28 V power supply rating a specific constraint?\u003c\/p\u003e\n\u003cp\u003eThe 28 V rating denotes the power supply limit for hazardous area installations (Zone 2\/Div 2) to ensure compliance with intrinsic safety or non-incendive design constraints.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46026785128621,"sku":"990-08-XX-01-05","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_25dadee9-e98b-4dcb-9cbe-51cf206cca2a.jpg?v=1783411881","url":"https:\/\/www.maxwellplc.com\/products\/990-08-xx-01-05-bently-nevada-990-991-series-vibration-transmitter","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}