{"id":190065,"date":"2026-10-12T12:00:00","date_gmt":"2026-10-12T12:00:00","guid":{"rendered":"https:\/\/m-technologijos.lt\/?post_type=products&#038;p=190065"},"modified":"2026-10-12T18:10:24","modified_gmt":"2026-10-12T15:10:24","slug":"helmut-fischer-sigmascope-gold-b-gold-c-authenticity","status":"publish","type":"products","link":"https:\/\/m-technologijos.lt\/en\/equipment\/coating-thickness-measurement\/electrical-conductivity-meters\/helmut-fischer-sigmascope-gold-b-gold-c-authenticity\/","title":{"rendered":"Helmut Fischer SIGMASCOPE GOLD B \/ GOLD C \u2013 gold authenticity testing by conductivity"},"content":{"rendered":"<h2>Applications<\/h2>\n<p>Handheld instruments for the gold and precious metals industry \u2013 non-destructive authenticity testing of bars, coins and large jewellery within a few seconds, even through plastic packaging. Conductivity measurement detects inclusions of the same density (tungsten) that a density test does not reveal; complements Fischer XRF instruments.<\/p>\n<h2>Key features<\/h2>\n<ul>\n<li>GOLD B: bars from ~1 oz (31.1 g) to 1 kg, thickness up to 17 mm<\/li>\n<li>GOLD C: coins and bars up to ~100 g; recognises Krugerrands and ducats by their conductivity<\/li>\n<li>Measurement through non-conductive coatings and foil<\/li>\n<li>Variable penetration depth according to the thickness of the object<\/li>\n<li>High-contrast touchscreen, USB, acoustic signal<\/li>\n<li>Probes and reference standards for coins and bars<\/li>\n<\/ul>\n<h2>Models<\/h2>\n<p>SIGMASCOPE GOLD B (bars; 100, 500, 1,000 Hz); SIGMASCOPE GOLD C (coins; 15, 30, 60, 120 kHz)<\/p>\n<h2>Technical data<\/h2>\n<ul>\n<li>Method: phase-sensitive eddy current, conductivity according to DIN 50994<\/li>\n<li>Frequencies: GOLD B 100 \/ 500 \/ 1,000 Hz; GOLD C 15 \/ 30 \/ 60 \/ 120 kHz<\/li>\n<li>Objects: GOLD B \u2013 bars 31.1 g\u20131 kg (up to 17 mm); GOLD C \u2013 up to ~100 g<\/li>\n<li>Display: touchscreen<\/li>\n<li>Interface: USB<\/li>\n<\/ul>\n<h2>Standards<\/h2>\n<p>DIN 50994<\/p>\n<h2>What we offer<\/h2>\n<ul>\n<li>Selection of the instrument and configuration for your task, together with the manufacturer<\/li>\n<li>Trial measurements of your samples in the manufacturer&#8217;s laboratory<\/li>\n<li>Training, calibration and service organised through the manufacturer<\/li>\n<\/ul>\n<p><a class=\"fl-button mt-cta\" href=\"\/en\/contacts\/\">Request a quote<\/a><\/p>\n<p class=\"mt-source\"><small>Technical data according to the manufacturer: <a href=\"https:\/\/www.helmut-fischer.com\/products\/tactile-measuring-devices\/sigmascope-gold-b-and-gold-c\" rel=\"nofollow noopener\" target=\"_blank\">helmut-fischer.com<\/a><\/small><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Handheld instruments for the gold and precious metals industry \u2013 non-destructive authenticity testing of bars, coins and large jewellery within a few seconds, even through plastic packaging.<\/p>\n","protected":false},"featured_media":90066,"template":"","meta":{"mt_image_url":"https:\/\/www.helmut-fischer.com\/fileadmin\/_processed_\/5\/e\/csm_0_0_ababcd04d1.png","footnotes":""},"categories":[208],"class_list":["post-190065","products","type-products","status-publish","has-post-thumbnail","hentry","category-electrical-conductivity-meters"],"_links":{"self":[{"href":"https:\/\/m-technologijos.lt\/en\/wp-json\/wp\/v2\/products\/190065","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m-technologijos.lt\/en\/wp-json\/wp\/v2\/products"}],"about":[{"href":"https:\/\/m-technologijos.lt\/en\/wp-json\/wp\/v2\/types\/products"}],"version-history":[{"count":2,"href":"https:\/\/m-technologijos.lt\/en\/wp-json\/wp\/v2\/products\/190065\/revisions"}],"predecessor-version":[{"id":198578,"href":"https:\/\/m-technologijos.lt\/en\/wp-json\/wp\/v2\/products\/190065\/revisions\/198578"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/m-technologijos.lt\/en\/wp-json\/wp\/v2\/media\/90066"}],"wp:attachment":[{"href":"https:\/\/m-technologijos.lt\/en\/wp-json\/wp\/v2\/media?parent=190065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m-technologijos.lt\/en\/wp-json\/wp\/v2\/categories?post=190065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}