SJ-4601 Specifications<\/title>\n <meta name=\"viewport\" content=\"width=device-width,initial-scale=1\" \/>\n <style>\n body { font-family: Arial, Helvetica, sans-serif; padding: 20px; }\n table { border-collapse: collapse; width: 100%; max-width: 780px; }\n caption { font-weight: 700; margin-bottom: 8px; text-align: left; font-size: 1.1rem; }\n th, td { border: 1px solid #ddd; padding: 8px 10px; text-align: left; vertical-align: top; }\n th { background: #f7f7f7; width: 32%; }\n td.value { width: 68%; }\n @media (max-width:600px){\n th, td { font-size: 14px; padding: 6px 8px; }\n }\n <\/style>\n<\/head>\n<body>\n\n <table>\n <caption>SJ-4601 \u2014 Technical Specifications<\/caption>\n <tbody>\n <tr>\n <th>Model Name<\/th>\n <td class=\"value\">SJ-4601<\/td>\n <\/tr>\n <tr>\n <th>Sensor applied<\/th>\n <td class=\"value\">Sensor (Electric Type)<\/td>\n <\/tr>\n <tr>\n <th>Measurement range<\/th>\n <td class=\"value\">0 ~ 50 mm<\/td>\n <\/tr>\n <tr>\n <th>Resolution<\/th>\n <td class=\"value\">Below 0.003 mm<\/td>\n <\/tr>\n <tr>\n <th>Accuracy<\/th>\n <td class=\"value\">Below 0.1%<\/td>\n <\/tr>\n <tr>\n <th>Temp expansion coefficient of resistance<\/th>\n <td class=\"value\">\u00b1400 ppm\/\u00b0C<\/td>\n <\/tr>\n <tr>\n <th>Rated power<\/th>\n <td class=\"value\">0.6 W ~ 4 W<\/td>\n <\/tr>\n <tr>\n <th>Linearity<\/th>\n <td class=\"value\">Below \u00b11%<\/td>\n <\/tr>\n <tr>\n <th>Total resistance deviation<\/th>\n <td class=\"value\">\u00b120%<\/td>\n <\/tr>\n <tr>\n <th>Dimension<\/th>\n <td class=\"value\">Sensor: L = 195 mm, D (\u00d8) = 28 mm<\/td>\n <\/tr>\n <tr>\n <th>Weight<\/th>\n <td class=\"value\">0.23 kg<\/td>\n <\/tr>\n <tr>\n <th>Material<\/th>\n <td class=\"value\">Stainless Steel<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n<\/body>\n<\/html>\n\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>This is subject to change without prior notice in order to improve the product\u2019s quality.<\/summary>\n<p><\/p>\n<\/details>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description The Electric Joint Meter is used to measure the size change of the surface, connection parts, and cracks in concrete structures. A high-precision and linear potentiometer is mounted inside the housing, allowing the rod to push or pull the sensor when deformation occurs. The movement is then transmitted to<span class=\"more-link\"><a href=\"https:\/\/foredencnc.com\/?p=63\">Read More →<\/a><\/span><\/p>\n","protected":false},"author":2,"featured_media":64,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,136,15,3,116,133],"tags":[31,33],"class_list":["entry","author-editor","post-63","post","type-post","status-publish","format-standard","has-post-thumbnail","category-displacement-transducers","category-measurements","category-news","category-products","category-sensor-product","category-sensors","tag-electric-crack-meter","tag-33"],"_links":{"self":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/63","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=63"}],"version-history":[{"count":1,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/63\/revisions"}],"predecessor-version":[{"id":65,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/63\/revisions\/65"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/media\/64"}],"wp:attachment":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=63"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=63"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=63"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

The Electric Joint Meter<\/strong> is used to measure the size change of the surface, connection parts, and cracks in concrete structures.<\/p>\n\n\n\n

A high-precision and linear potentiometer is mounted inside the housing, allowing the rod to push or pull the sensor when deformation occurs. The movement is then transmitted to the potentiometer, which converts the length change into an electrical signal that is sent to the output device.<\/p>\n\n\n\n

This output signal can easily be converted into a length displacement value by applying the conversion coefficient. The difference between the initial (default) measurement value and the current measurement value represents the displacement, so that the change speed, ratio and tendency of the crack can easily be measured.<\/p>\n\n\n

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$\"\"$ <\/figure>\n<\/div>\n\n\n
Composition & Characteristics<\/strong><\/h3>\n\n\n\n
\u25a3 Components<\/strong><\/h4>\n\n\n\n
\n
Crack meter sensor<\/li>\n\n\n\n
Cable<\/li>\n\n\n\n
Protection box<\/li>\n<\/ol>\n\n\n\n
\u25a3 Features<\/strong><\/h4>\n\n\n\n
\n
High stability and reliability<\/li>\n\n\n\n
Excellent reproducibility and responsiveness with built-in high-precision linear potentiometer<\/li>\n\n\n\n
Various measurement ranges available (10 mm ~ 300 mm)<\/li>\n\n\n\n
Built-in high-precision temperature sensor<\/li>\n<\/ol>\n\n\n\n
Specification<\/h3>\n\n\n\n\n\n\n \n SJ-4601 Specifications<\/title>\n <meta name=\"viewport\" content=\"width=device-width,initial-scale=1\" \/>\n <style>\n body { font-family: Arial, Helvetica, sans-serif; padding: 20px; }\n table { border-collapse: collapse; width: 100%; max-width: 780px; }\n caption { font-weight: 700; margin-bottom: 8px; text-align: left; font-size: 1.1rem; }\n th, td { border: 1px solid #ddd; padding: 8px 10px; text-align: left; vertical-align: top; }\n th { background: #f7f7f7; width: 32%; }\n td.value { width: 68%; }\n @media (max-width:600px){\n th, td { font-size: 14px; padding: 6px 8px; }\n }\n <\/style>\n<\/head>\n<body>\n\n <table>\n <caption>SJ-4601 \u2014 Technical Specifications<\/caption>\n <tbody>\n <tr>\n <th>Model Name<\/th>\n <td class=\"value\">SJ-4601<\/td>\n <\/tr>\n <tr>\n <th>Sensor applied<\/th>\n <td class=\"value\">Sensor (Electric Type)<\/td>\n <\/tr>\n <tr>\n <th>Measurement range<\/th>\n <td class=\"value\">0 ~ 50 mm<\/td>\n <\/tr>\n <tr>\n <th>Resolution<\/th>\n <td class=\"value\">Below 0.003 mm<\/td>\n <\/tr>\n <tr>\n <th>Accuracy<\/th>\n <td class=\"value\">Below 0.1%<\/td>\n <\/tr>\n <tr>\n <th>Temp expansion coefficient of resistance<\/th>\n <td class=\"value\">\u00b1400 ppm\/\u00b0C<\/td>\n <\/tr>\n <tr>\n <th>Rated power<\/th>\n <td class=\"value\">0.6 W ~ 4 W<\/td>\n <\/tr>\n <tr>\n <th>Linearity<\/th>\n <td class=\"value\">Below \u00b11%<\/td>\n <\/tr>\n <tr>\n <th>Total resistance deviation<\/th>\n <td class=\"value\">\u00b120%<\/td>\n <\/tr>\n <tr>\n <th>Dimension<\/th>\n <td class=\"value\">Sensor: L = 195 mm, D (\u00d8) = 28 mm<\/td>\n <\/tr>\n <tr>\n <th>Weight<\/th>\n <td class=\"value\">0.23 kg<\/td>\n <\/tr>\n <tr>\n <th>Material<\/th>\n <td class=\"value\">Stainless Steel<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n<\/body>\n<\/html>\n\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>This is subject to change without prior notice in order to improve the product\u2019s quality.<\/summary>\n<p><\/p>\n<\/details>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description The Electric Joint Meter is used to measure the size change of the surface, connection parts, and cracks in concrete structures. A high-precision and linear potentiometer is mounted inside the housing, allowing the rod to push or pull the sensor when deformation occurs. The movement is then transmitted to<span class=\"more-link\"><a href=\"https:\/\/foredencnc.com\/?p=63\">Read More →<\/a><\/span><\/p>\n","protected":false},"author":2,"featured_media":64,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,136,15,3,116,133],"tags":[31,33],"class_list":["entry","author-editor","post-63","post","type-post","status-publish","format-standard","has-post-thumbnail","category-displacement-transducers","category-measurements","category-news","category-products","category-sensor-product","category-sensors","tag-electric-crack-meter","tag-33"],"_links":{"self":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/63","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=63"}],"version-history":[{"count":1,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/63\/revisions"}],"predecessor-version":[{"id":65,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/63\/revisions\/65"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/media\/64"}],"wp:attachment":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=63"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=63"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=63"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}