{"id":10527,"date":"2023-05-11T14:08:36","date_gmt":"2023-05-11T06:08:36","guid":{"rendered":"https:\/\/blog.wika.cn\/zh\/?p=10527"},"modified":"2023-12-25T16:06:27","modified_gmt":"2023-12-25T08:06:27","slug":"differential-pressure-switches-ensure-safe-filter-operation","status":"publish","type":"post","link":"https:\/\/blog.wika.cn\/zh\/applications\/differential-pressure-switches-ensure-safe-filter-operation\/","title":{"rendered":"\u5dee\u538b\u5f00\u5173\u786e\u4fdd\u8fc7\u6ee4\u5668\u5b89\u5168\u8fd0\u884c"},"content":{"rendered":"<p><strong>\u5dee\u538b\u5f00\u5173\u627f\u62c5\u7740\u76d1\u6d4b\u548c\u63a7\u5236\u7684\u6838\u5fc3\u4efb\u52a1\u3002\u4e00\u5bb6\u751f\u4ea7\u6d41\u7a0b\u5de5\u4e1a\u8fc7\u6ee4\u7cfb\u7edf\u7684\u5236\u9020\u5546\u5c31\u9009\u62e9\u4e86\u5a01\u5361\uff08WIKA<\/strong><strong>\uff09\u751f\u4ea7\u7684\u5e26\u9644\u52a0\u9600\u7ec4\u7684DE<\/strong><strong>\u578b\u5f00\u5173\u6765\u5b9e\u73b0\u8fd9\u4e9b\u529f\u80fd\u3002\u5176\u539f\u56e0\u6709\u4e8c\uff1a\u4e00\u662f\u6d4b\u91cf\u6280\u672f\u7684\u8d28\u91cf\uff0c\u4e8c\u662f\u76f4\u63a5\u8fde\u63a5\u6d4b\u91cf\u7ec4\u4ef6\u7684\u4e24\u90e8\u5206\u53ef\u901a\u8fc7\u6807\u51c6\u5316\u8fde\u63a5\u3002<\/strong><\/p>\n<p>\u5a01\u5361\u6309\u7167\u56fd\u9645IEC 61518\u6807\u51c6\u751f\u4ea7\u5dee\u538b\u5f00\u5173\u548c\u76f8\u5e94\u7684\u9600\u7ec4\u3002\u56e0\u6b64\uff0c\u5f00\u5173\u548c\u9600\u7ec4\u90fd\u5177\u6709\u95f4\u9694\u4e3a54 mm\u7684\u538b\u529b\u8fde\u63a5\uff0c\u65e0\u9700\u989d\u5916\u7684\u8f6c\u63a5\u5934\u3001\u8f6f\u7ba1\u6216\u5f2f\u7ba1\u5c31\u53ef\u4ee5\u8fdb\u884c\u88c5\u914d\u3002\u8fd9\u6837\u5c3d\u53ef\u80fd\u51cf\u5c11\u4e86\u6f5c\u5728\u6cc4\u6f0f\u70b9\u7684\u6570\u91cf\u3002\u8fd9\u4e00\u7279\u6027\u53cd\u8fc7\u6765\u53c8\u63d0\u9ad8\u4e86\u8fc7\u7a0b\u53ef\u9760\u6027\uff0c\u8fd9\u5728\u5904\u7406\u5173\u952e\u4ecb\u8d28\u7684\u8fc7\u7a0b\u4e2d\u5177\u6709\u76f8\u5f53\u91cd\u8981\u7684\u610f\u4e49\u3002<\/p>\n<p><strong>\u4e00\u5957\u6d4b\u91cf\u7cfb\u7edf\u76d1\u6d4b\u6240\u6709\u8fc7\u6ee4\u7cfb\u7edf<\/strong><\/p>\n\n      <div class=\"wp-caption alignright\" style=\"max-width:396px;\"><img decoding=\"async\" src=\"https:\/\/blog.wika.com\/wp-content\/blogs.dir\/18\/files\/2023\/04\/textbild_de.jpg\" alt=\"WIKA measuring assembly of model DE differential pressure switch and a model IV31 3-way valve block\" \/><p class=\"wp-caption-text\">\u5a01\u5361\u6d4b\u91cf\u7ec4\u4ef6\u5305\u62ecDE\u578b\u5dee\u538b\u5f00\u5173\u548cIV31\u578b\u4e09\u901a\u9600\u7ec4\uff1a\u7531\u4e8e\u7cfb\u7edf\u4e24\u90e8\u5206\u7684\u6807\u51c6\u5316\u8fde\u63a5\uff0854 mm\u7684\u95f4\u8ddd\uff09\uff0c\u964d\u4f4e\u4e86\u6f5c\u5728\u6cc4\u6f0f\u70b9\u7684\u6570\u91cf\u3002<\/p><\/div>\n    \n<p>\u5728\u5bfb\u627e\u5408\u9002\u7684\u6d4b\u91cf\u89e3\u51b3\u65b9\u6848\u7684\u8fc7\u7a0b\u4e2d\uff0c\u8fc7\u6ee4\u7cfb\u7edf\u5236\u9020\u5546\u53d1\u73b0\uff0c\u5728\u4e0d\u9700\u8981\u8f6c\u63a5\u5934\u7684\u60c5\u51b5\u4e0b\uff0c\u6d4b\u91cf\u4eea\u8868\u548c\u4eea\u8868\u9600\u4e4b\u95f4\u6beb\u7c73\u7ea7\u7cbe\u5ea6\u7684\u8fde\u63a5\u5e76\u4e0d\u662f\u5fc5\u987b\u7684\u3002\u73b0\u5728\uff0c\u91c7\u7528\u5ba2\u6237\u6216\u884c\u4e1a\u5b9a\u5236\u5316\u8bbe\u8ba1\u7684\u5a01\u5361\u6d4b\u91cf\u7ec4\u4ef6\u5b9e\u73b0\u4e86\u53ea\u7528\u4e00\u5957\u6d4b\u91cf\u7cfb\u7edf\u5c31\u80fd\u76d1\u6d4b\u6240\u6709\u8fc7\u6ee4\u7cfb\u7edf\u3002<\/p>\n<p>\u76d1\u6d4b\u8fc7\u7a0b\u4e2d\u53ef\u5b9e\u73b0\u591a\u79cd\u4e0d\u540c\u7684\u529f\u80fd\u3002\u4e00\u65e6\u8fbe\u5230\u8bbe\u5b9a\u7684\u9650\u503c\uff0c\u5dee\u538b\u5f00\u5173\u5c31\u4f1a\u53d1\u51fa\u8b66\u544a\u4fe1\u53f7\uff0c\u4f8b\u5982\uff1a\u8fc7\u6ee4\u5668\u5835\u585e\uff0c\u9700\u8981\u91c7\u53d6\u63aa\u65bd\u3002\u8be5\u4eea\u8868\u8fd8\u53ef\u4ee5\u89e6\u53d1\u81ea\u52a8\u6e05\u6d01\u8fc7\u7a0b\u6216\u5207\u6362\u5230\u5e72\u51c0\u7684\u8fc7\u6ee4\u5668\u3002\u4e0d\u4ec5\u5982\u6b64\uff0c\u5e26\u6709\u4e24\u4e2a\u5fae\u52a8\u5f00\u5173\u7684DPDT\u7248\u672c\u53ef\u4ee5\u540c\u65f6\u5b9e\u73b0\u4e24\u4e2a\u529f\u80fd\uff0c\u4f8b\u5982\uff0c\u53d1\u9001\u62a5\u8b66\u4fe1\u53f7\u548c\u5207\u6362\u5230\u5907\u7528\u8fc7\u6ee4\u5668\u3002\u901a\u8fc7\u8fd9\u79cd\u7248\u672c\uff0c\u4e5f\u53ef\u4ee5\u5c06\u4e00\u4e2a\u5fae\u52a8\u5f00\u5173\u914d\u7f6e\u4e3a\u53e6\u4e00\u4e2a\u7684\u5907\u7528\u3002<\/p>\n<p><strong>\u5e26\u4e24\u4e2a\u5185\u7f6e\u6cc4\u538b\u9600\u7684\u5dee\u538b\u5f00\u5173<\/strong><\/p>\n<p>DE\u5dee\u538b\u5f00\u5173\u7684\u7ed3\u6784\u8bbe\u8ba1\u4e5f\u63d0\u5347\u4e86\u8fc7\u7a0b\u53ef\u9760\u6027\u3002\u5b83\u7684\u5185\u90e8\u96c6\u6210\u4e86\u4e24\u4e2a\u6cc4\u538b\u9600\uff0c\u53ef\u786e\u4fdd\u9694\u819c\u4e0a\u7684\u9759\u538b\uff0c\u4ece\u800c\u4fdd\u62a4\u6d4b\u91cf\u5143\u4ef6\u514d\u53d7\u635f\u574f\u3002\u5982\u679c\u5fc5\u987b\u62c6\u9664\u6d4b\u91cf\u4eea\u8868\u8fdb\u884c\u7ef4\u62a4\u6216\u91cd\u65b0\u6821\u51c6\uff0c\u5219\u8fde\u63a5\u5230\u5f00\u5173\u6d4b\u91cf\u88c5\u7f6e\u7684\u9600\u7ec4\uff083\u901a\u62165\u901a\uff09\u53ef\u901a\u8fc7\u4e24\u4e2a\u622a\u6b62\u9600\u4fdd\u6301\u8fc7\u7a0b\u5bc6\u5c01\u3002\u53e6\u5916\uff0c\u538b\u529b\u8865\u507f\u9600\u53ef\u9632\u6b62\u5355\u4fa7\u8d85\u538b\u30025\u901a\u9600\u7ec4\u8fd8\u63d0\u4f9b\u4e86\u4ece\u4e24\u4e2a\u538b\u529b\u4fa7\u6392\u6c14\u7684\u9009\u9879\u3002<\/p>\n<p><strong>\u5a01\u5361\u63d0\u4f9b\u4e13\u4e1a\u88c5\u914d<\/strong><\/p>\n<p>\u5982\u679c\u5ba2\u6237\u9700\u8981\uff0c\u5a01\u5361\u53ef\u63d0\u4f9b\u6d4b\u91cf\u4eea\u8868\u4e13\u4e1a\u88c5\u914d\u670d\u52a1\uff0c\u5982\u5dee\u538b\u5f00\u5173\u548c\u76f8\u5173\u4eea\u8868\u9600\u7684\u7ec4\u88c5\u3002\u8fd9\u79cd\u4eea\u8868\u8fde\u63a5\u7ecf\u8fc7\u6cc4\u6f0f\u6d4b\u8bd5\uff0c\u5230\u8d27\u5373\u53ef\u5b89\u88c5\u3002<\/p>\n<p><strong>\u6ce8<\/strong><br \/>\n\u8bf7\u8bbf\u95ee\u5a01\u5361\u7f51\u7ad9\u4e86\u89e3\u6709\u5173<a href=\"https:\/\/www.wika.cn\/de_dec_zh_cn.WIKA\" rel=\"external\" target=\"_blank\">\u5dee\u538b\u5f00\u5173DE\u578b<\/a>\u4ee5\u53ca<a href=\"https:\/\/www.wika.cn\/iv30_iv31_iv50_iv51_zh_cn.WIKA\" rel=\"external\" target=\"_blank\">\u4e09\u9600\u7ec4\u548c\u4e94\u9600\u7ec4<\/a>\uff08\u578b\u53f7IV30\u3001IV31\u548c\u578b\u53f7IV50\u3001IV51\uff09\u7684\u66f4\u591a\u8be6\u7ec6\u4fe1\u606f\u3002\u5982\u679c\u60a8\u6709\u4efb\u4f55\u95ee\u9898\uff0c\u60a8\u7684<a href=\"https:\/\/www.wika.cn\/contact_zh_cn.WIKA\" rel=\"external\" target=\"_blank\">\u8054\u7cfb\u4eba<\/a>\u5c06\u5f88\u4e50\u610f\u4e3a\u60a8\u63d0\u4f9b\u5e2e\u52a9\u3002<\/p>\n<p><strong>\u60a8\u4e5f\u53ef\u4ee5\u9605\u8bfb\u6211\u4eec\u7684\u6587\u7ae0<\/strong><br \/>\n<a href=\"https:\/\/blog.wika.cn\/zh\/applications\/safe-filter-monitoring-with-differential-pressure-gauges\/\">\u4f7f\u7528\u5dee\u538b\u8868\u8fdb\u884c\u5b89\u5168\u7684\u8fc7\u6ee4\u5668\u76d1\u6d4b<\/a><br \/>\n<a href=\"https:\/\/blog.wika.cn\/zh\/knowhow\/filter-monitoring-a-crucial-component-for-energy-efficient-operation\/\">\u8fc7\u6ee4\u5668\u76d1\u6d4b\uff1a\u9ad8\u6548\u80fd\u8fd0\u884c\u7684\u5173\u952e\u56e0\u7d20<\/a><br \/>\n<a href=\"https:\/\/blog.wika.com\/knowhow\/combination-of-pressure-measuring-instrument-with-accessories\/\" rel=\"external\" target=\"_blank\">\u538b\u529b\u6d4b\u91cf\u4eea\u8868\u4e0e\u914d\u4ef6\u7684\u7ec4\u5408\uff1a\u4e8c\u6b21\u914d\u800c\u975e\u81ea\u884c\u7ec4\u88c5 <\/a><br \/>\n<a href=\"https:\/\/blog.wika.cn\/zh\/knowhow\/electronic-differential-pressure-measurement-for-level-monitoring\/\">\u7528\u4e8e\u6db2\u4f4d\u76d1\u6d4b\u7684\u7535\u5b50\u5dee\u538b\u6d4b\u91cf<\/a><br \/>\n<a href=\"https:\/\/blog.wika.cn\/zh\/products\/level-products\/monitoring-the-level-in-liquid-gas-tanks-with-a-cryo-gauge\/\">\u4f4e\u6e29\u5dee\u538b\u8868\u76d1\u6d4b\u6db2\u5316\u6c14\u7f50\u4e2d\u7684\u6db2\u4f4d<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>You can also find out more about instrumentation valves in the following video:<\/p>\n<div data-fullscreen=\"disabled\" data-mode=\"normal\" data-oembed=\"1\" data-provider=\"youtube\" data-reset-after-played id=\"arve-youtube-kkf3riu9o4k\" style=\"max-width:900px;\" class=\"arve\">\n<div class=\"arve-inner\">\n<div style=\"aspect-ratio:500\/281\" class=\"arve-embed arve-embed--has-aspect-ratio\">\n<div class=\"arve-ar\" style=\"padding-top:56.200000%\"><\/div>\n<p>\t\t\t<iframe allow=\"accelerometer &apos;none&apos;;autoplay &apos;none&apos;;bluetooth &apos;none&apos;;browsing-topics &apos;none&apos;;camera &apos;none&apos;;clipboard-read &apos;none&apos;;clipboard-write;display-capture &apos;none&apos;;encrypted-media &apos;none&apos;;gamepad &apos;none&apos;;geolocation &apos;none&apos;;gyroscope &apos;none&apos;;hid &apos;none&apos;;identity-credentials-get &apos;none&apos;;idle-detection &apos;none&apos;;keyboard-map &apos;none&apos;;local-fonts;magnetometer &apos;none&apos;;microphone &apos;none&apos;;midi &apos;none&apos;;otp-credentials &apos;none&apos;;payment &apos;none&apos;;picture-in-picture;publickey-credentials-create &apos;none&apos;;publickey-credentials-get &apos;none&apos;;screen-wake-lock &apos;none&apos;;serial &apos;none&apos;;summarizer &apos;none&apos;;sync-xhr;usb &apos;none&apos;;web-share;window-management &apos;none&apos;;xr-spatial-tracking &apos;none&apos;;\" allowfullscreen=\"\" class=\"arve-iframe fitvidsignore\" credentialless data-arve=\"arve-youtube-kkf3riu9o4k\" data-lenis-prevent=\"\" data-src-no-ap=\"https:\/\/www.youtube-nocookie.com\/embed\/KKF3riU9O4k?feature=oembed&amp;iv_load_policy=3&amp;modestbranding=1&amp;rel=0&amp;autohide=1&amp;playsinline=0&amp;autoplay=0&amp;enablejsapi=1\" frameborder=\"0\" height=\"505.8\" loading=\"lazy\" name=\"\" referrerpolicy=\"strict-origin-when-cross-origin\" sandbox=\"allow-scripts allow-same-origin allow-presentation allow-popups allow-popups-to-escape-sandbox\" scrolling=\"no\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/KKF3riU9O4k?feature=oembed&#038;iv_load_policy=3&#038;modestbranding=1&#038;rel=0&#038;autohide=1&#038;playsinline=0&#038;autoplay=0&#038;enablejsapi=1\" title=\"Which is the right valve for my pressure measuring instrument? | WIKA instrumentation valves\" width=\"900\"><\/iframe><\/p><\/div>\n<\/p><\/div>\n<p>\t<script type=\"application\/ld+json\">{\"@context\":\"http:\\\/\\\/schema.org\\\/\",\"@id\":\"https:\\\/\\\/blog.wika.cn\\\/zh\\\/applications\\\/differential-pressure-switches-ensure-safe-filter-operation\\\/#arve-youtube-kkf3riu9o4k\",\"type\":\"VideoObject\",\"embedURL\":\"https:\\\/\\\/www.youtube-nocookie.com\\\/embed\\\/KKF3riU9O4k?feature=oembed&iv_load_policy=3&modestbranding=1&rel=0&autohide=1&playsinline=0&autoplay=0&enablejsapi=1\",\"name\":\"Which is the right valve for my pressure measuring instrument? | WIKA instrumentation valves\",\"thumbnailUrl\":\"https:\\\/\\\/i.ytimg.com\\\/vi\\\/KKF3riU9O4k\\\/hqdefault.jpg\",\"uploadDate\":\"2021-08-16T10:51:05Z\",\"author\":\"WIKA Group\",\"description\":\"Why is it a good idea to use valves on pressure measuring instruments? Quite simply: An instrumentation valve is installed between the process and the measuring instrument (e.g. pressure gauge, pressure sensor, pressure switch or process transmitter). Thus, the instrument can be quickly replaced or removed for calibration without interrupting the process. In addition, the measuring instrument can be drained via an instrumentation valve, or the pipe can be vented.\\n \\nYou will find the following instrumentation valves and combinations at WIKA:\\n\\u2705 Stopcocks\\n\\u2705 Needle valves\\n\\u2705 Shut-off valves\\n\\u2705 Block-and-bleed valves\\n\\u2705 Valve manifolds\\n\\u2705 Monoflanges\\n\\u2705 Ball valves\\n\\u2705 Instrument hook-ups\\n \\nIn Europe, DIN shut-off valves with a handwheel are widespread. Worldwide, needle valves are frequently used to separate the process from the measuring instruments.\\n \\nSpecial versions like the block-and-bleed valve enable the measuring instrument to be vented even at high pressures. Valve manifolds have two pressure connections and are used to connect differential pressure measuring instruments. To establish an equalisation between the plus and minus sides, pressure compensating valves are used.\\nTo enable space-saving installation, monoflanges are recommended. These primarily find their use in the process industry. This involves attaching the measuring instrument to the process by means of a flange connection.\\nParticularly with large pipe diameters, the application of a ball valve is recommendable. This way, the process can be sealed quickly and safely using a ball, and the valve is opened and closed by means of a cock.\\nWhen fugitive emissions need to be prevented, WIKA valves can be equipped with this special safety feature. This involves the valve being fitted with a sealing made of a special material and then being tested in accordance with applicable standards. These valves are identified by an orange ring.\\n \\nOn our website you will find a large selection of valves:  \\n \\nWould you like to learn more about valves? In our blog you will, among other things, find answers on the following topics:\\nWhat role do valves play in plant safety?  \\nPlay it safe with double block & bleed:  \\nAvoiding fugitive emissions through prevention:  \\n \\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \\n \\nFollow us on our social media channels:\\n\\ud83d\\udcfa YouTube: \\n\\ud83c\\udfaf LinkedIn: \\n \\n\\u25ac Contents of this video \\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\n0:00 Intro\\n0:17 Valve functions\\n0:32 Gauge cock\\n0:45 Needle valve\\n1:05 Block-and-bleed version\\n1:14 Valve manifold\\n1:33 Monoflange\\n1:46 Ball valve\\n2:09 Fugitive emissions\\n2:27 Instrument hook-ups\"}<\/script><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5dee\u538b\u5f00\u5173\u627f\u62c5\u7740\u76d1\u6d4b\u548c\u63a7\u5236\u7684\u6838\u5fc3\u4efb\u52a1\u3002\u4e00\u5bb6\u751f\u4ea7\u6d41\u7a0b\u5de5\u4e1a\u8fc7\u6ee4\u7cfb\u7edf\u7684\u5236\u9020\u5546\u5c31\u9009\u62e9\u4e86\u5a01\u5361\uff08WIKA\uff09\u751f\u4ea7\u7684\u5e26\u9644\u52a0\u9600\u7ec4\u7684 [&hellip;]<\/p>\n","protected":false},"author":174,"featured_media":10554,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[232],"tags":[427,79,210,284,552,546],"class_list":["post-10527","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","tag-427","tag-pressure-switch","tag-switching-fuction","tag-measuring-point","tag-552","tag-546"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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