{"id":2991,"date":"2022-08-20T15:43:31","date_gmt":"2022-08-20T15:43:31","guid":{"rendered":"https:\/\/pizzi-instruments.it\/products\/estensimetro-ad-asta\/"},"modified":"2026-01-30T14:00:05","modified_gmt":"2026-01-30T14:00:05","slug":"estensimetro-ad-asta","status":"publish","type":"products","link":"https:\/\/pizzi-instruments.it\/en\/products\/estensimetro-ad-asta\/","title":{"rendered":"Vibrating Wire Rod Extensometer"},"content":{"rendered":"\n<p>Rod extensometers are used in geotechnical monitoring to monitor and measure with precision movements of one or more surface points, with respect to points considered fixed and located at different depths in the rock.<\/p>\n\n\n\n<p>Reference points are formed by special anchors, fixed in boreholes at the desired depth through cementing or by using special devices.<\/p>\n\n\n\n<p>Each measuring rod is linked to the relevant anchoring point which connects to the reference head. These rods are inserted in a protective covering which insulates them from the surrounding soil or filling grout and ensures free sliding.<\/p>\n\n\n\n<p>The rods, free to slide inside the covering, allow measurement of the relative movements between the anchoring point and the reference head installed on the surface.<\/p>\n\n\n\n<p>Measurement is performed manually by means of a gauge, analog or digital or by means of automatic displacement sensors (potentiometers, LVDT or vibrating wire).<\/p>\n\n\n\n<p>Measurements are made absolute by the certainty by the stability of the reference point or by measuring the instrument head using another method.<\/p>\n\n\n\n<p>Different types of rod extensometers are available:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Single-point or multi-point, up to six measuring points;<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>With vibrating wire displacement transducer or potentiometer<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>With manual reading, or with manual and automatic reading<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>With stainless steel rods or fiberglass (Invar rods on request)<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>With standard anchors in concrete or specific to requirements<\/li><\/ul>\n\n\n\n<p>The instrument can be read with our portable unit DEC3000 or with our automatic acquisition unit DAC3000.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rod extensometers are used in geotechnical monitoring to monitor and measure with precision movements of one or more surface points, with respect to points considered fixed and located at different depths in the rock. Reference points are formed by special anchors, fixed in boreholes at the desired depth through cementing or by using special devices. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1644,"menu_order":0,"template":"","meta":{"footnotes":""},"products_tag":[],"products_category":[35],"products_application":[81,85,79,91,77],"class_list":["post-2991","products","type-products","status-publish","has-post-thumbnail","hentry","products_category-extensometers-and-settlement-gauges","products_application-cracks","products_application-dam-movements","products_application-deformations","products_application-rotations","products_application-settlements"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vibrating Wire Rod Extensometer - Pizzi Instruments<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pizzi-instruments.it\/en\/products\/estensimetro-ad-asta\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vibrating Wire Rod Extensometer - Pizzi Instruments\" \/>\n<meta property=\"og:description\" content=\"Rod extensometers are used in geotechnical monitoring to monitor and measure with precision movements of one or more surface points, with respect to points considered fixed and located at different depths in the rock. Reference points are formed by special anchors, fixed in boreholes at the desired depth through cementing or by using special devices. 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Reference points are formed by special anchors, fixed in boreholes at the desired depth through cementing or by using special devices. 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