{"id":1503,"date":"2025-11-18T12:54:22","date_gmt":"2025-11-18T12:54:22","guid":{"rendered":"https:\/\/foredencnc.com\/?p=1503"},"modified":"2025-12-05T09:07:40","modified_gmt":"2025-12-05T09:07:40","slug":"vw-crack-meter-%ec%a7%84%eb%8f%99%ed%98%84%ec%8b%9d-%ea%b7%a0%ec%97%b4%ec%b8%a1%ec%a0%95%ea%b3%84","status":"publish","type":"post","link":"https:\/\/foredencnc.com\/?p=1503","title":{"rendered":"VW Crack meter (\uc9c4\ub3d9\ud604\uc2dd \uade0\uc5f4\uce21\uc815\uacc4)"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Description<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\/W Crack Meter is used to measure the size change of the surface or connection part and crack of concrete structure. <\/li>\n\n\n\n<li>The product is equipped with sensor part and anchor fixing part. Any size change of cracks is transmitted to the sensor unit through the anchor and the body. When the V\/W is magnetized by the magnetic coil due to the change of the tensile force, the V\/W generates the resonant frequency. This frequency is transmitted to the output device and displayed in engineering units. Anti-corrosion and anti-rust materials were applied for measurements semi-permanently.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"863\" height=\"336\" src=\"http:\/\/foredencnc.com\/wp-content\/uploads\/2025\/11\/image-6.png\" alt=\"\" class=\"wp-image-1368\" srcset=\"https:\/\/foredencnc.com\/wp-content\/uploads\/2025\/11\/image-6.png 863w, https:\/\/foredencnc.com\/wp-content\/uploads\/2025\/11\/image-6-300x117.png 300w, https:\/\/foredencnc.com\/wp-content\/uploads\/2025\/11\/image-6-768x299.png 768w\" sizes=\"auto, (max-width: 863px) 100vw, 863px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Composition &amp; Characteristic<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u25a3 Components<\/h4>\n\n\n\n<p>\u2460 Crack meter sensor<br>\u2461 Cable<br>\u2462 Protection box<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u25a3 Features<\/h4>\n\n\n\n<p>\u2460 High stability and reliability<br>\u2461 10m H2O water-proof structure<br>\u2462 Different measurements (50mm~100mm)<br>\u2463 Built-in high precision temp sensor<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Specification<\/h3>\n\n\n\n<table style=\"width:100%; border-collapse: collapse; font-family: Arial, sans-serif;\">\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Model Name<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">SJ-4500<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Sensor applied<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">Sensor (V\/W Type)<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Measurement range<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">0 ~ 50mm<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Resolution<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">0.025% FSR<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Accuracy<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">\u00b10.5% FSR<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Coefficient of expansion<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">11\u00d710\u207b\u2076 \/\u00b0C<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Working Temp.<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">-40\u00b0C ~ 80\u00b0C<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Built-in temp sensor<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">NTC Thermistor (3K\u03a9-ATF)<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Temp sensor working range<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">Thermistor: -40\u00b0C ~ 80\u00b0C<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Temp sensor accuracy<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">Thermistor: \u00b11\u00b0C<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Waterproofing<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">10m H2O<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Dimension<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">L = 300mm \/ D(\u00d8) = 15mm<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Weight<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">0.2kg<\/td>\n    <\/tr>\n    <tr>\n        <th style=\"border: 1px solid #ccc; padding: 10px; text-align: left;\">Material<\/th>\n        <td style=\"border: 1px solid #ccc; padding: 10px;\">Special steel &#038; High density epoxy forming<\/td>\n    <\/tr>\n<\/table>\n\n\n\n\n<p>This is subject to change without prior notice in order to improve the product\u2019s quality.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description Composition &amp; Characteristic \u25a3 Components \u2460 Crack meter sensor\u2461 Cable\u2462 Protection box \u25a3 Features \u2460 High stability and reliability\u2461 10m H2O water-proof structure\u2462 Different measurements (50mm~100mm)\u2463 Built-in high precision temp sensor Specification Model Name SJ-4500 Sensor applied Sensor (V\/W Type) Measurement range 0 ~ 50mm Resolution 0.025% FSR Accuracy<span class=\"more-link\"><a href=\"https:\/\/foredencnc.com\/?p=1503\">Read More &rarr;<\/a><\/span><\/p>\n","protected":false},"author":2,"featured_media":1368,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,3,116,133],"tags":[122,123],"class_list":["entry","author-editor","post-1503","post","type-post","status-publish","format-standard","has-post-thumbnail","category-displacement-transducers","category-products","category-sensor-product","category-sensors","tag-vw-crack-meter","tag-123"],"_links":{"self":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1503","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1503"}],"version-history":[{"count":2,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1503\/revisions"}],"predecessor-version":[{"id":1759,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1503\/revisions\/1759"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/media\/1368"}],"wp:attachment":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}