{"product_id":"330801-28-05-101-03-02-bently-nevada-proximity-probe","title":"330801-28-05-101-03-02 Bently Nevada Proximity Probe","description":"\u003cp\u003eThe \u003cstrong\u003eBently Nevada 330801-28-05-101-03-02\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e330801\u003c\/strong\u003e Proximity Probe, operates as a dedicated hardware component for non-contact vibration, displacement, and position measurement within 3500 Machinery Protection System platforms. It utilizes eddy-current technology to detect distance changes between the sensor tip and a conductive target, converting shaft motion into proportional analog output signals across physical monitoring channels.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe model code structure for the 330801-28-05-101-03-02 proximity probe defines the following physical configuration:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e330801\u003c\/strong\u003e: Base Model Designation for Proximity Probe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e28\u003c\/strong\u003e: Unthreaded Length Option – 2.8 inches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e05\u003c\/strong\u003e: Overall Case Length Option – 5.0 inches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e101\u003c\/strong\u003e: Total System Length Option – 10.1 metres.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e03\u003c\/strong\u003e: Connector Option – Miniature coaxial connector with connector protector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e02\u003c\/strong\u003e: Agency Approval Option – Multiple European\/International approvals.\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\u003e330801-28-05-101-03-02\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e38.1 mm (1.5 in) diameter, 63.5 mm (2.5 in) length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 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\u003e10 to 32 VDC loop supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e6.35 to 31.75 mm (0.25 to 1.25 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC, 0-5 VDC, or 0-10 VDC proportional analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEddy-Current Probe Scaling and Gap Voltage Validation\u003c\/h3\u003e\n\u003cp\u003eThe 330801 proximity probe relies on eddy-current probe scaling to convert high-frequency electromagnetic field variations into accurate physical displacement values. Target proximity changes the magnetic field balance generated at the probe tip, shifting output voltages in direct proportion to dynamic shaft movement and static position changes.\u003c\/p\u003e\n\u003cp\u003eDuring installation and field maintenance, gap voltage validation requires setting the probe to achieve a target output reading near -10 VDC (or equivalent mid-scale current\/voltage output) when the machine shaft rests at the mechanical center of its journal clearance. Maintaining correct mechanical gapping prevents signal clipping during high-amplitude rotor dynamics events and limits cross-talk suppression degradation in multi-probe bearing housings.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does proper gap setting impact the analog output signal of the 330801 probe?\u003c\/p\u003e\n\u003cp\u003eA: Setting the probe at the mid-scale gap position ensures the transducer operates within its linear measurement range (6.35 to 31.75 mm). Improper gapping causes non-linear output response, signal distortion, or saturation at the upper and lower range limits.\u003c\/p\u003e\n\u003cp\u003eQ: Can the probe cable be trimmed or modified to fit tighter installation spaces?\u003c\/p\u003e\n\u003cp\u003eA: No. Splicing or cutting the integrated coaxial cable changes the tuned electrical resistance and capacitance of the assembly, destroying factory calibration and introducing significant measurement error into the output signal.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInspect the probe tip, threaded case, and coaxial connector for mechanical damage or contamination prior to installation.\u003c\/li\u003e\n\u003cli\u003eMount the probe securely in its rigid bracket or housing, maintaining a minimum thread engagement depth of 5 full turns.\u003c\/li\u003e\n\u003cli\u003eRoute the coaxial extension cable through protective conduit, adhering to a minimum static bend radius of 25.4 mm (1.0 in).\u003c\/li\u003e\n\u003cli\u003eIsolate signal cables from high-voltage AC lines and variable frequency drive (VFD) power wiring by a minimum clearance of 300 mm to prevent inductive interference.\u003c\/li\u003e\n\u003cli\u003ePerform gap voltage validation using a digital multimeter across the sensor output terminals; adjust mechanical insertion depth until the bias voltage matches the -10 VDC target or equivalent mid-scale baseline.\u003c\/li\u003e\n\u003cli\u003eConnect the cable shield exclusively to system instrument ground at the monitoring rack end, leaving the shield ungrounded at the probe body to prevent ground loops.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":43681198538842,"sku":"330801-28-05-101-03-02","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/330101-00-40-10-02-05_72c60203-c175-4a8f-b193-97c1249a15fa.png?v=1784518317","url":"https:\/\/www.spareoil.com\/products\/330801-28-05-101-03-02-bently-nevada-proximity-probe","provider":"SpareOil Automation","version":"1.0","type":"link"}