{"id":1513,"date":"2025-11-18T14:47:16","date_gmt":"2025-11-18T14:47:16","guid":{"rendered":"https:\/\/foredencnc.com\/?p=1513"},"modified":"2025-11-20T14:42:03","modified_gmt":"2025-11-20T14:42:03","slug":"vw-rock-bolt-stressmeter-%eb%9d%bd%eb%b3%bc%ed%8a%b8-%ec%b6%95%eb%a0%a5%ea%b3%84","status":"publish","type":"post","link":"https:\/\/foredencnc.com\/?p=1513","title":{"rendered":"VW Rock Bolt Stressmeter (\ub77d\ubcfc\ud2b8 \ucd95\ub825\uacc4)"},"content":{"rendered":"\n

Description<\/h3>\n\n\n\n

The VW rock bolt stressmeter is an instrument for verifying the rock bolt construction appropriateness (effective length, yield and stress) by accurately measuring the axial force transmitted by R\/B. It is designed for accurate measurement of the axial force applied to the rock bolt to be constructed for the rock reinforcement at construction sites such as tunnel, mining, hangars and cable tunnel.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Composition & Characteristic<\/h3>\n\n\n\n

\u25a3 Components<\/h4>\n\n\n\n

\u2460 R\/B Stressmeter sensor
\u2461 Cable<\/p>\n\n\n\n

\u25a3 Features<\/h4>\n\n\n\n

The inside of the body is equipped with a VR sensor that is adjusted to about 1,800Hz. The rock bolt anchor is made of steel for high carbon piping with an inner diameter of \u00d816.2 \u00d7 outer diameter of \u00d827.2mm, so that it can be installed easily at inner diameter \u00d838mm, the borehole size in tunnel.<\/p>\n\n\n\n

Specification<\/p>\n\n\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
Model Name<\/th>\n SJ-1200<\/th>\n <\/tr>\n\n
Sensor part<\/td>\n Sensor applied: V\/W Sensor (VW Type)<\/td>\n <\/tr>\n
Measurement range: 1,400 ~ 3,500Hz (170kN)<\/td>\n <\/tr>\n
Measurement band: Min 1,000 ~ Max 4,000\u03bc\u03b5 (\u00b1125kN)<\/td>\n <\/tr>\n
Resolution: 0.1\u03bc\u03b5<\/td>\n <\/tr>\n
Accuracy: 0.85kN<\/td>\n <\/tr>\n
Linearity error tolerance: \u00b10.5% FSR<\/td>\n <\/tr>\n
Coefficient of expansion: 11 \u00d7 10\u207b\u2076\/\u00b0C<\/td>\n <\/tr>\n
Working Temp.: -40\u00b0C ~ 80\u00b0C<\/td>\n <\/tr>\n
Temp sensor working range: Thermistor: -40 ~ 80\u00b0C<\/td>\n <\/tr>\n\n
Temp sensor accuracy<\/td>\n Thermistor: \u00b11\u00b0C<\/td>\n <\/tr>\n\n
Number of measurement point<\/td>\n 4 Points<\/td>\n <\/tr>\n\n
Minimum drilling diameter<\/td>\n \u00f838mm or above<\/td>\n <\/tr>\n\n
Anchor nominal dimension<\/td>\n Inside Dia. \u00f816.2 \u00d7 Outside Dia. \u00f827.2mm<\/td>\n <\/tr>\n\n
Anchor cross section<\/td>\n 374.95mm\u00b2<\/td>\n <\/tr>\n\n
V\/W gauge effective load<\/td>\n Approx. 15 ton\u00b7f<\/td>\n <\/tr>\n\n
Anchor elastic modulus \/ Yield point<\/td>\n 2.1 \u00d7 10\u2074 \/ dir 17 ton\u00b7f (In case of elastic limit 4,500 kg\/cm\u00b2)<\/td>\n <\/tr>\n\n
Anchor material<\/td>\n High carbon steel pipe steel (Coating)<\/td>\n <\/tr>\n\n
Signal cable<\/td>\n \u00f810mm, 0.235mm\u00b2 \u00d7 8C Shielded PVC Sheath Cable 3m<\/td>\n <\/tr>\n<\/table>\n\n\n\n\n
\"\"<\/figure>\n\n\n\n\n\n\n \n \n \n \n \n \n \n \n
Components<\/th>\n <\/th>\n Description<\/th>\n 4m<\/th>\n <\/tr>\n\n \n
A<\/td>\n Cable<\/td>\n Product size<\/td>\n Gauge length<\/b> (mm): 1,000<\/td>\n <\/tr>\n\n \n
B<\/td>\n Connector<\/td>\n Housing dia.<\/b> (mm): 33<\/td>\n <\/tr>\n\n \n
C<\/td>\n Head<\/td>\n Pipe dia.<\/b> (mm): 27<\/td>\n <\/tr>\n\n \n
D<\/td>\n Housing<\/td>\n Weight<\/b> (kg): 9.5<\/td>\n <\/tr>\n\n \n
E<\/td>\n Sensor<\/td>\n <\/td>\n <\/td>\n <\/tr>\n\n \n
F<\/td>\n End Cover<\/td>\n <\/td>\n <\/td>\n <\/tr>\n\n<\/table>\n\n\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Description The VW rock bolt stressmeter is an instrument for verifying the rock bolt construction appropriateness (effective length, yield and stress) by accurately measuring the axial force transmitted by R\/B. It is designed for accurate measurement of the axial force applied to the rock bolt to be constructed for theRead More →<\/a><\/span><\/p>\n","protected":false},"author":2,"featured_media":1515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,3,116,133,14],"tags":[126,127],"class_list":["entry","author-editor","post-1513","post","type-post","status-publish","format-standard","has-post-thumbnail","category-pressure-sensors","category-products","category-sensor-product","category-sensors","category-stressmeters","tag-vw-rock-bolt-stressmeter","tag-127"],"_links":{"self":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1513","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=1513"}],"version-history":[{"count":1,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1513\/revisions"}],"predecessor-version":[{"id":1516,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/posts\/1513\/revisions\/1516"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=\/wp\/v2\/media\/1515"}],"wp:attachment":[{"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1513"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1513"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/foredencnc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1513"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}