{"id":2684,"date":"2024-07-18T16:56:08","date_gmt":"2024-07-18T08:56:08","guid":{"rendered":"http:\/\/www.camcjsw-oem.com.cn\/product\/ds500-explosion-proof-limitswitch-box-2\/"},"modified":"2026-06-09T15:44:42","modified_gmt":"2026-06-09T07:44:42","slug":"ds500-explosion-proof-limitswitch-box-2","status":"publish","type":"product","link":"http:\/\/www.camcjsw-oem.com.cn\/es\/producto\/ds500-explosion-proof-limitswitch-box-2\/","title":{"rendered":"Caja de interruptores de l\u00edmite a prueba de explosiones DS500"},"content":{"rendered":"<h1 font-size=\"30px\">DS500 Explosion Proof Limit Switch Box \u2013 Hazardous Area Valve Position Indicator<\/h1>\n<h2 font-size=\"26px\">Product Overview<\/h2>\n<p><strong>Specifically, the JSW DS500 explosion proof limit switch box<\/strong> serves as a heavy\u2011duty position feedback device. It automates quarter\u2011turn valves in hazardous areas. <strong>This unit<\/strong> provides both visual and electrical remote position indication. It features an Ex d IIB T6 flameproof enclosure certification. <strong>The robust die\u2011cast aluminum housing<\/strong> has a polyester powder coating. It ensures reliable operation in demanding environments. <strong>For example,<\/strong> oil refineries, chemical plants, and gas pipelines. <strong>For more about our company, please visit our <a href=\"\/es\/about\/\">about us page<\/a>.<\/strong><\/p>\n<p><strong>Furthermore, the DS500 explosion proof limit switch box<\/strong> meets <a class=\"external-link\" href=\"https:\/\/www.namur.net\/en\/home\/\" target=\"_blank\" rel=\"noopener noreferrer\">NAMUR<\/a> mounting standards (VDI\/VDE 3845). It is also compatible with ISO 5211 bracket interfaces. <strong>Consequently,<\/strong> it allows direct installation onto most quarter\u2011turn pneumatic actuators. <strong>Additionally, the three\u2011dimensional visual position indicator<\/strong> displays valve status. It shows red for closed and yellow for open. Operators can confirm valve position from a distance. This improves safety in hazardous zones.<\/p>\n<h2 font-size=\"26px\">Key Technical Specifications<\/h2>\n<p><strong>The following parameters define the performance of this device:<\/strong><\/p>\n<ul>\n<li><strong>Model:<\/strong> DS500 explosion proof limit switch box<\/li>\n<li><strong>Enclosure Material:<\/strong> Die-cast aluminum alloy with polyester powder coating<\/li>\n<li><strong>Explosion Proof Class:<\/strong> Ex d IIB T6 (ATEX \/ IECEx certified)<\/li>\n<li><strong>Protection Rating:<\/strong> IP67 \u2013 dust\u2011tight and protected against temporary immersion<\/li>\n<li><strong>Mounting Interface:<\/strong> NAMUR (VDI\/VDE 3845) with ISO 5211 bracket compatibility<\/li>\n<li><strong>Position Indicator:<\/strong> 3D dome visual, 0\u201390\u00b0 rotation (closed: red, open: yellow)<\/li>\n<li><strong>Switches:<\/strong> 2\u00d7 SPDT mechanical micro switches (standard); optional proximity sensors (PNP\/NPN)<\/li>\n<li><strong>Switch Ratings:<\/strong> AC: 250V\/5A; DC: 125V\/0.4A, 30V\/4A<\/li>\n<li><strong>Terminal Strips:<\/strong> 8 points (0.08\u20132.5mm\u00b2)<\/li>\n<li><strong>Cable Entries:<\/strong> Dual entries: G1\/2, NPT 1\/2, or M20\u00d71.5 (configurable)<\/li>\n<li><strong>Shaft Material:<\/strong> Stainless steel (NAMUR standard)<\/li>\n<li><strong>Ambient Temperature Range:<\/strong> -20\u00b0C to +80\u00b0C (standard); -40\u00b0C to +80\u00b0C (optional)<\/li>\n<li><strong>Cover Design:<\/strong> Captive bolts prevent loss during maintenance<\/li>\n<\/ul>\n<p><strong>For detailed product drawings and dimensional data, please <a href=\"\/es\/contact\/\">contact our technical team<\/a>.<\/strong><\/p>\n<h2 font-size=\"26px\">Key Features<\/h2>\n<ul>\n<li><strong>Ex d IIB T6 Flameproof Certification:<\/strong> The enclosure meets ATEX and IECEx standards. It is suitable for Zone 1 and Zone 2 hazardous areas. The flameproof design contains any internal explosion. It does not propagate to the surrounding atmosphere.<\/li>\n<li><strong>IP67 Weatherproof Construction:<\/strong> The die\u2011cast aluminum housing resists dust and temporary immersion. <strong>Thus,<\/strong> the device works well outdoors and in washdown environments.<\/li>\n<li><strong>3D Visual Position Indicator:<\/strong> The dome\u2011type indicator shows red (closed) and yellow (open). Operators can see valve status at a glance. This reduces the need to access the valve directly in hazardous areas.<\/li>\n<li><strong>Quick\u2011Set Cam Adjustment:<\/strong> Spring\u2011loaded splined cams allow tool\u2011free on\u2011site adjustment. <strong>Moreover,<\/strong> the cam position sets quickly by hand. No readjustment is needed after initial setup.<\/li>\n<li><strong>Multiple Cable Entry Options:<\/strong> Dual cable entries (G1\/2, NPT 1\/2, or M20) provide wiring flexibility. <strong>Consequently,<\/strong> installation becomes easier in tight or confined spaces.<\/li>\n<li><strong>NAMUR &amp; ISO 5211 Compliance:<\/strong> The device mounts directly onto NAMUR\u2011standard actuators. ISO 5211 brackets ensure secure, bracket\u2011free installation.<\/li>\n<li><strong>Versatile Switch Configurations:<\/strong> It comes with 2\u00d7 SPDT mechanical switches. Optional proximity sensors (PNP\/NPN) support basic on\u2011off feedback or advanced control systems.<\/li>\n<li><strong>Captive Cover Bolts:<\/strong> Cover bolts are secured to the lid. <strong>Therefore,<\/strong> they cannot be lost during field maintenance. This allows fast, worry\u2011free access for adjustments.<\/li>\n<li><strong>Stainless Steel Shaft:<\/strong> The NAMUR\u2011standard shaft provides excellent corrosion resistance. It ensures reliable torque transmission from the actuator.<\/li>\n<li><strong>Multi\u2011Contact PCB Board:<\/strong> The internal PCB board eliminates loose wiring. <strong>As a result,<\/strong> it reduces the risk of short circuits and improves long\u2011term reliability.<\/li>\n<\/ul>\n<h2 font-size=\"26px\">Working Principle<\/h2>\n<p><strong>The device operates via a mechanical cam mechanism.<\/strong> The actuator&#8217;s rotary motion drives it. <strong>First,<\/strong> when the pneumatic actuator rotates 90\u00b0, the stainless steel shaft transfers motion to internal adjustable cams. <strong>Next,<\/strong> these cams actuate two independent SPDT micro switches. The switches send an electrical open or closed signal to the control room or PLC. <strong>Simultaneously,<\/strong> the visual indicator rotates between red and yellow. It shows the valve&#8217;s physical status.<\/p>\n<p><strong>The \u201cquick\u2011set\u201d spring\u2011loaded splined cam design<\/strong> allows rapid adjustment without tools. <strong>Furthermore,<\/strong> the captive cover bolts maintain a secure, weatherproof seal. This reliable, fail\u2011safe design provides accurate feedback. <strong>Consequently,<\/strong> it supports proactive maintenance. The flameproof enclosure (Ex d IIB T6) contains any internal ignition. <strong>Thus,<\/strong> the DS500 explosion proof limit switch box is safe for hazardous areas where flammable gases or vapours may exist.<\/p>\n<h2>Applications<\/h2>\n<p><strong>Specifically, this device is designed for hazardous area valve automation.<\/strong> Typical industries and applications include:<\/p>\n<ul>\n<li><strong>Oil Refineries:<\/strong> It provides reliable valve position feedback for crude oil and refined product isolation valves in Zone 1 and Zone 2 areas.<\/li>\n<li><strong>Chemical Processing Plants:<\/strong> It delivers essential valve status feedback for critical isolation and shut\u2011down valves handling flammable chemicals.<\/li>\n<li><strong>Oil and Gas Pipelines:<\/strong> Remote valve stations rely on it for accurate open\/closed indication, ensuring safety and operational control.<\/li>\n<li><strong>Petrochemical Industry:<\/strong> The IP67 rating makes it suitable for outdoor applications exposed to harsh weather and washdown.<\/li>\n<li><strong>Gas Processing Facilities:<\/strong> It monitors valve position in natural gas processing, storage, and transmission systems where explosive atmospheres may exist.<\/li>\n<li><strong>Power Generation Facilities:<\/strong> It provides feedback on fuel handling systems, cooling water isolation valves, and steam control valves.<\/li>\n<li><strong>Pharmaceutical Manufacturing:<\/strong> The stainless steel shaft meets hygiene requirements for hazardous pharmaceutical processing.<\/li>\n<li><strong>Marine and Offshore Installations:<\/strong> It suits offshore platforms, FPSO vessels, and shipboard systems requiring certified flameproof equipment.<\/li>\n<\/ul>\n<h2 font-size=\"26px\">Quality Assurance<\/h2>\n<p><strong>JSW produces this unit under strict quality control.<\/strong> Our facility holds internationally recognized certifications. <strong>Specifically,<\/strong> we are certified to <a class=\"external-link\" href=\"https:\/\/www.iso.org\/standard\/62085.html\" target=\"_blank\" rel=\"noopener noreferrer\">ISO\u202f9001:2015<\/a>, <a class=\"external-link\" href=\"https:\/\/www.iso.org\/standard\/60857.html\" target=\"_blank\" rel=\"noopener noreferrer\">ISO\u202f14001:2015<\/a>, and <a class=\"external-link\" href=\"https:\/\/www.iso.org\/standard\/63787.html\" target=\"_blank\" rel=\"noopener noreferrer\">ISO\u202f45001:2018<\/a>.<\/p>\n<p><strong>The DS500 explosion proof limit switch box<\/strong> carries <a class=\"external-link\" href=\"https:\/\/ec.europa.eu\/growth\/sectors\/mechanical-engineering\/atex_en\" target=\"_blank\" rel=\"noopener noreferrer\">ATEX<\/a> and <a class=\"external-link\" href=\"https:\/\/www.iecex.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">IECEx<\/a> certifications (Ex d IIB T6 Gb). <strong>Before shipment,<\/strong> each unit undergoes functional testing, insulation resistance testing, and IP67 verification. All components are traceable. A certificate of conformance accompanies every order. <strong>For detailed documentation, please visit our <a href=\"\/es\/certificate\/\">certificates page<\/a>.<\/strong><\/p>\n<h2>Customization Options<\/h2>\n<p><strong>JSW offers several customization options for this model:<\/strong><\/p>\n<ul>\n<li><strong>Material Options:<\/strong> Stainless steel enclosure for enhanced corrosion resistance in marine or chemical environments.<\/li>\n<li><strong>Temperature Range:<\/strong> Extended low\u2011temperature version (-40\u00b0C to +80\u00b0C) for cold climate applications.<\/li>\n<li><strong>Cable Entries:<\/strong> Custom entry sizes (G1\/2, NPT 1\/2, M20, or other specifications).<\/li>\n<li><strong>Switch Types:<\/strong> Proximity sensors (PNP\/NPN), 4\u201120mA position transmitter, or additional micro switch configurations.<\/li>\n<li><strong>Indicator Lid:<\/strong> Dome lid (standard) or flat lid for specific installation requirements.<\/li>\n<li><strong>Mounting Brackets:<\/strong> Custom brackets for non\u2011standard actuator top works or valve stems.<\/li>\n<li><strong>Custom Colors:<\/strong> RAL color options for facility colour\u2011coding requirements.<\/li>\n<\/ul>\n<p><strong>For more information about customization, please <a href=\"\/es\/contact\/\">contact our engineering team<\/a>.<\/strong><\/p>\n<h2 font-size=\"26px\">Related Products<\/h2>\n<p><strong>Beyond this explosion\u2011proof unit, JSW offers a complete range of valve automation components.<\/strong> For standard non\u2011hazardous applications, consider our <a href=\"\/es\/producto\/apl210-mechanical-limit-switch-box-2\/\">APL210 limit switch box<\/a>. We also supply <a href=\"\/es\/pneumatic-actuator\/\">pneumatic actuators<\/a> and manual override gearboxes. <strong>For a full product overview, visit our <a href=\"https:\/\/www.camcjsw-oem.com.cn\/es\/\">home page<\/a>.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>DS500 Explosion Proof Limit Switch Box \u2013 Hazardous Area Valve Position Indicator Product Overview Specifically, the JSW DS500 explosion proof limit switch box serves as a heavy\u2011duty position feedback device. It automates quarter\u2011turn valves in hazardous areas. This unit provides both visual and electrical remote position indication. It features an Ex d IIB T6 flameproof [&hellip;]<\/p>","protected":false},"featured_media":2288,"template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_cat":[38],"product_tag":[],"class_list":{"0":"post-2684","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-limit-switch-box-positioner","7":"desktop-align-left","8":"tablet-align-left","9":"mobile-align-left","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.5 (Yoast SEO v23.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>DS500 Explosion Proof Limit Switch Box | JSW<\/title>\r\n<meta name=\"description\" content=\"JSW DS500 explosion proof limit switch box with Ex d IIB T6 certification, IP67 protection, and visual position indicator for hazardous area valve automation. 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