{"product_id":"18745-04-bently-nevada-proximitor-sensor-7200-series","title":"18745-04 Bently Nevada Proximitor Sensor 7200 Series","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 18745-04\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e18745\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProximitor Sensor, operates as a dedicated hardware component for signal conditioning within 7200 Series machinery protection systems. Configured for use with a combined probe and extension cable system, the device processes high-frequency carrier signals to detect inductive impedance changes. It provides a linear voltage output proportional to the gap between the probe tip and the monitored target, enabling continuous observation of shaft displacement and vibration in rotating equipment.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e18745-04\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.24 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8.0 cm x 2.8 cm x 6.0 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-50 deg C to +120 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-24 VDC nominal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eScale Factor\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7.87 V\/mm (200 mV\/mil)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSystem Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2-wire, DC powered\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEddy-Current Probe Scaling and Rotor Dynamics\u003c\/h3\u003e\n\u003cp\u003eThe 7200 Series Proximitor relies on calibrated eddy-current probe scaling to convert target proximity into a usable DC signal. Successful integration requires gap voltage validation to -10 VDC targets at the Proximitor output during cold-start commissioning. This calibration ensures the probe is centered within its linear range, which is mandatory for accurate rotor dynamics analysis. Signal integrity is maintained through effective cross-talk suppression by keeping sensor cabling routed in dedicated, shielded pathways to avoid electromagnetic interference from adjacent high-speed signal lines or power distribution conduits.\u003c\/p\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1 18745-04 Proximitor Sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 Technical configuration leaflet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSecure the Proximitor unit in a vibration-isolated, dry enclosure using the integrated mounting holes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain clear access to the terminal blocks for monitoring output voltages.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure the -24 VDC power supply is stabilized and properly referenced to the system common.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConnect the coaxial probe\/extension cable assembly to the BNC or screw-terminal input, ensuring the shield is continuous and well-terminated to prevent noise injection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eIs the 18745-04 compatible with 3300 series probes?\u003c\/p\u003e\n\u003cp\u003eNo, the 7200 series Proximitor is electrically tuned for 7200 series probes. Mixing with 3300 or 3500 series hardware will produce erroneous output data.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the sensor be powered by a 12 VDC source?\u003c\/p\u003e\n\u003cp\u003eThe device requires a nominal -24 VDC supply. Operating outside of the specified voltage range will cause signal clipping and non-linear performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs the 9 meter system length flexible?\u003c\/p\u003e\n\u003cp\u003eThe length is fixed by the system tuning. Modifying the probe or extension cable length will shift the system resonant frequency and invalidate the sensitivity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat does the \"2-wire\" designation mean?\u003c\/p\u003e\n\u003cp\u003eIt refers to the integrated power and signal loop architecture where the output signal is superimposed on the DC power supply lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is the system grounded?\u003c\/p\u003e\n\u003cp\u003eThe system should be grounded at a single common point to prevent ground loops. Ensure the Proximitor case is bonded to the chassis ground if required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this device support digital signal output?\u003c\/p\u003e\n\u003cp\u003eNo, the 7200 series Proximitor is a purely analog device providing an instantaneous voltage output proportional to the gap.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the response to an open circuit?\u003c\/p\u003e\n\u003cp\u003eAn open circuit in the probe or extension cable will cause the output to swing to the negative supply rail, indicating a \"Not OK\" fault condition.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAre the connectors hot-swappable?\u003c\/p\u003e\n\u003cp\u003eWhile the circuitry is robust, disconnecting the probe while the system is powered will cause a transient signal spike, which may trigger protection system alarms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46026831888557,"sku":"18745-04","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/18745-04_24.jpg?v=1782785946","url":"https:\/\/www.maxwellplc.com\/ga\/products\/18745-04-bently-nevada-proximitor-sensor-7200-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}