{"product_id":"bently-nevada-21000-28-05-20-051-04-02-proximity-probe-housing-assembly-industrial-automation-module","title":"Bently Nevada 21000-28-05-20-051-04-02 Proximity Probe Housing Assembly – Industrial Automation Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eWhen machinery vibration threatens uptime, the \u003cstrong\u003eBently Nevada 21000-28-05-20-051-04-02\u003c\/strong\u003e provides a robust, explosion-proof housing for 8 mm proximity probes. This Industrial Automation Module is engineered for continuous monitoring in demanding environments, ensuring accurate data transmission for predictive maintenance. As part of the 21000 series, this assembly combines an aluminum body with a 304 stainless steel sleeve, delivering both durability and corrosion resistance. The 21000-28-05-20-051-04-02 is factory-packed and comes with a 12-month warranty, making it a reliable choice for critical rotating machinery.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe table below lists the key specifications for the Bently Nevada 21000-28-05-20-051-04-02. These values are critical for ensuring proper fit and function in your monitoring system.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Option\u003c\/td\u003e\n\u003ctd\u003e3300 XL 8 mm probe, with connector (selectable hazardous area approvals)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Cable Length\u003c\/td\u003e\n\u003ctd\u003e0.5 m (20 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandoff Adapter\u003c\/td\u003e\n\u003ctd\u003e2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Penetration\u003c\/td\u003e\n\u003ctd\u003e5.1 in (051)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitting Option\u003c\/td\u003e\n\u003ctd\u003eOne 3\/4-14 NPT plug only (04)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Thread Option\u003c\/td\u003e\n\u003ctd\u003e3\/4-14 NPT (02) – must be ordered when standoff adapter length is not 00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminum body with 304 stainless steel sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum (C) + (D) Dimension\u003c\/td\u003e\n\u003ctd\u003e13.5 in (34.3 mm) – with 0.5 m probe cable length (visible probe P\/N and S\/N not visible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.1 kg (2.4 lb) typical, without fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe 21000-28-05-20-051-04-02 is designed for externally mounted proximity probe housings, fully compliant with API 670 Standard. Typical applications include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVibration monitoring on turbines, compressors, and pumps in oil \u0026amp; gas facilities.\u003c\/li\u003e\n\u003cli\u003eHazardous area installations where explosion-proof certification is mandatory, such as chemical plants and refineries.\u003c\/li\u003e\n\u003cli\u003eRotating machinery protection in power generation and heavy industry.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn each scenario, the housing ensures stable probe placement and protection, enabling accurate shaft displacement and eccentricity measurements that drive predictive maintenance programs.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eProper installation is crucial for accurate readings. Follow these steps:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVerify that the mounting thread (3\/4-14 NPT) matches your machine's tapping. The 21000-28-05-20-051-04-02 includes this thread option; ensure it is ordered if your standoff adapter length is not 00.\u003c\/li\u003e\n\u003cli\u003eAttach the optional standoff adapter (2 in) to position the probe at the correct distance from the shaft. The probe penetration is 5.1 in, so adjust accordingly.\u003c\/li\u003e\n\u003cli\u003eConnect the probe cable (0.5 m) to the reverse mount proximity probe, ensuring a secure connection to avoid signal loss.\u003c\/li\u003e\n\u003cli\u003eSeal all threaded ports with the provided plug (one 3\/4-14 NPT plug) and use thread sealant to maintain the explosion-proof rating.\u003c\/li\u003e\n\u003cli\u003eFor hazardous areas, follow the wiring diagram (drawing 140979) to maintain the non-incendive circuit rating.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eRegular inspection of the housing and probe is essential for long-term reliability. Check the O-rings and thread seal periodically for wear, especially in high-vibration environments. The aluminum body and stainless steel sleeve resist corrosion, but ensure the housing remains clean and free of debris. The CSA Type 4 enclosure rating ensures protection against dust and water, reducing maintenance frequency. By proactively inspecting the assembly, you can avoid unplanned downtime and extend the service life of your monitoring system.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eWhen ordering the Bently Nevada 21000-28-05-20-051-04-02, verify the following:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConfirm the probe cable length (0.5 m) meets your installation distance.\u003c\/li\u003e\n\u003cli\u003eEnsure the standoff adapter length (2 in) and probe penetration (5.1 in) match your machine's geometry.\u003c\/li\u003e\n\u003cli\u003eCheck that the fitting option (one 3\/4-14 NPT plug) is sufficient for your conduit connections.\u003c\/li\u003e\n\u003cli\u003eFor North American end users, the CA21000 housing variant is available with additional CSA certifications; for all other regions, the standard 21000 housing is used.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePLC Source PRO is a trusted supplier of authentic Bently Nevada parts, offering new and original products with factory packaging and warranty. Contact us to confirm compatibility with your existing monitoring system.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44439467851875,"sku":"21000-28-05-20-051-04-02","price":272.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/21000-00-00-00-035-04-02_c5d2d849-799b-4f92-bde8-c608221b9599.jpg?v=1785871975","url":"https:\/\/www.plcsourcepro.com\/he\/products\/bently-nevada-21000-28-05-20-051-04-02-proximity-probe-housing-assembly-industrial-automation-module","provider":"PLC Source PRO","version":"1.0","type":"link"}