{"id":1634,"date":"2025-11-23T05:06:05","date_gmt":"2025-11-23T05:06:05","guid":{"rendered":"https:\/\/foredencnc.com\/?p=1634"},"modified":"2025-11-23T05:06:05","modified_gmt":"2025-11-23T05:06:05","slug":"rebar-strainmeter-%ec%b2%a0%ea%b7%bc-%ec%9d%91%eb%a0%a5%ea%b3%84","status":"publish","type":"post","link":"https:\/\/foredencnc.com\/?p=1634","title":{"rendered":"Rebar Strainmeter (\ucca0\uadfc \uc751\ub825\uacc4)"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Description<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>This vibrating wire strain gauge measures the stress acting on reinforcing bars (rebar) inside concrete structures, allowing assessment of structural integrity and stability. The gauge consists of a stainless-steel tube with waterproof and corrosion-resistant treatment, a gauge section connected via flanges, and a coil housing containing a magnetic coil, and it is directly attached to the rebar.<\/li>\n\n\n\n<li>Compared to conventional methods (where the rebar must be pre-processed before sensor attachment), this vibrating wire sensor offers simpler installation, excellent responsiveness and reproducibility, and minimal long-term effects, making it suitable for permanent monitoring.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"385\" height=\"214\" src=\"https:\/\/foredencnc.com\/wp-content\/uploads\/2025\/11\/image-77.png\" alt=\"\" class=\"wp-image-1635\" srcset=\"https:\/\/foredencnc.com\/wp-content\/uploads\/2025\/11\/image-77.png 385w, https:\/\/foredencnc.com\/wp-content\/uploads\/2025\/11\/image-77-300x167.png 300w\" sizes=\"auto, (max-width: 385px) 100vw, 385px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">Composition &amp; Characteristic<\/h3>\n\n\n\n<p>\u25a3<strong> Components<\/strong><br>\u2460 Rebar stress gauge sensor<br>\u2461 Cable<br>\u2462 Rebar body<\/p>\n\n\n\n<p>\u25a3 <strong>Features<\/strong><br>\u2460 Excellent reproducibility and responsiveness, unaffected by cable length or resistance variation<br>\u2461 Fully waterproof structure<br>\u2462 High stability and high-sensitivity design<br>\u2463 Built-in high-precision temperature sensor<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Specification<\/h3>\n\n\n\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"5\">\n  <tr>\n    <th>Model<\/th>\n    <th>SJ-4400<\/th>\n    <th>SJ-4401<\/th>\n  <\/tr>\n  <tr>\n    <td>Applicable Sensor<\/td>\n    <td>Vibration Type Sensor (V\/W Type)<\/td>\n    <td>Vibration Type Sensor (V\/W Type)<\/td>\n  <\/tr>\n  <tr>\n    <td>Measurement Range<\/td>\n    <td>1,400 ~ 3,200 Hz<\/td>\n    <td>1,400 ~ 3,200 Hz<\/td>\n  <\/tr>\n  <tr>\n    <td>Measurement Maximum<\/td>\n    <td>3,000 \u00b5\u03b5<\/td>\n    <td>3,000 \u00b5\u03b5<\/td>\n  <\/tr>\n  <tr>\n    <td>Resolution<\/td>\n    <td>0.5 \u00b5\u03b5<\/td>\n    <td>0.5 \u00b5\u03b5<\/td>\n  <\/tr>\n  <tr>\n    <td>Accuracy<\/td>\n    <td>\u00b10.25% FSR<\/td>\n    <td>\u00b10.25% FSR<\/td>\n  <\/tr>\n  <tr>\n    <td>Linearity Error<\/td>\n    <td>\u00b10.5% FSR<\/td>\n    <td>\u00b10.5% FSR<\/td>\n  <\/tr>\n  <tr>\n    <td>Thermal Expansion Coefficient<\/td>\n    <td>11\u00d710^-6 \/ \u00b0C<\/td>\n    <td>11\u00d710^-6 \/ \u00b0C<\/td>\n  <\/tr>\n  <tr>\n    <td>Operating Temperature<\/td>\n    <td>-40\u00b0C ~ 90\u00b0C<\/td>\n    <td>-40\u00b0C ~ 90\u00b0C<\/td>\n  <\/tr>\n  <tr>\n    <td>Built-in Temperature Sensor<\/td>\n    <td>NTC Thermistor (3KD-ATF)<\/td>\n    <td>NTC Thermistor (3KD-ATF)<\/td>\n  <\/tr>\n  <tr>\n    <td>Thermistor Operating Range<\/td>\n    <td>Thermistor: -20 ~ 50\u00b0C<\/td>\n    <td>Thermistor: -20 ~ 50\u00b0C<\/td>\n  <\/tr>\n  <tr>\n    <td>Thermistor Accuracy<\/td>\n    <td>Thermistor: \u00b11\u00b0C<\/td>\n    <td>Thermistor: \u00b11\u00b0C<\/td>\n  <\/tr>\n  <tr>\n    <td>Material<\/td>\n    <td>Stainless Steel 300 series, Fluoro O-Ring, High-density Epoxy Potting<\/td>\n    <td>Stainless Steel 300 series, Fluoro O-Ring, High-density Epoxy Potting<\/td>\n  <\/tr>\n  <tr>\n    <td>Waterproof Capacity<\/td>\n    <td>100m H2O<\/td>\n    <td>100m H2O<\/td>\n  <\/tr>\n  <tr>\n    <td>Dimensions<\/td>\n    <td>Steel: L=155mm, D(\u00d8)=16mm \/ Sensor: L=52mm, D(\u00d8)=32mm<\/td>\n    <td>Steel: L=155mm, D(\u00d8)=16mm \/ Sensor: L=52mm, D(\u00d8)=32mm<\/td>\n  <\/tr>\n  <tr>\n    <td>Weight<\/td>\n    <td>1.45 kg<\/td>\n    <td>1.45 kg<\/td>\n  <\/tr>\n  <tr>\n    <td>Connector<\/td>\n    <td>\u00d86.4\u00d7\u00d83.2 (cable length customized)<\/td>\n    <td>\u00d86.4\u00d7\u00d83.2 (cable length customized)<\/td>\n  <\/tr>\n<\/table>\n\n\n\n\n<p>This product is subject to change without prior notice to improve its quality.<br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description Composition &amp; Characteristic \u25a3 Components\u2460 Rebar stress gauge sensor\u2461 Cable\u2462 Rebar body \u25a3 Features\u2460 Excellent reproducibility and responsiveness, unaffected by cable length or resistance variation\u2461 Fully waterproof structure\u2462 High stability and high-sensitivity design\u2463 Built-in high-precision temperature sensor Specification Model SJ-4400 SJ-4401 Applicable Sensor Vibration Type Sensor (V\/W Type) Vibration<span class=\"more-link\"><a href=\"https:\/\/foredencnc.com\/?p=1634\">Read More &rarr;<\/a><\/span><\/p>\n","protected":false},"author":2,"featured_media":1635,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[146,147],"class_list":["entry","author-editor","post-1634","post","type-post","status-publish","format-standard","has-post-thumbnail","category-products","tag-rebar-strainmeter","tag-147"],"_links":{"self":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1634","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=1634"}],"version-history":[{"count":1,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1634\/revisions"}],"predecessor-version":[{"id":1636,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1634\/revisions\/1636"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/media\/1635"}],"wp:attachment":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}