{"id":30502,"date":"2026-03-03T06:19:37","date_gmt":"2026-03-03T06:19:37","guid":{"rendered":"https:\/\/hardnesstests.com\/?p=30502"},"modified":"2026-03-03T06:19:40","modified_gmt":"2026-03-03T06:19:40","slug":"portable-hardness-tester-2","status":"publish","type":"post","link":"https:\/\/hardnesstests.com\/nl\/portable-hardness-tester-2\/","title":{"rendered":"Draagbare hardheidsmeter"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-introduction\">Inleiding<\/h2>\n\n\n\n<p>A <strong>Draagbare hardheidsmeter<\/strong> is een compact apparaat dat klaar is voor gebruik in het veld en ontworpen is om de hardheid van metalen direct op de werkplek te meten. In tegenstelling tot laboratoriummachines hoeven draagbare testers geen monsters te snijden of zware componenten te vervoeren. Hierdoor zijn ze onmisbaar voor onderhoudsinspecties, lascontrole en kwaliteitscontrole van grote constructies.<\/p>\n\n\n\n<p>Van pijpleidingen en drukvaten tot turbineassen en constructiestaal, draagbare hardheidsmeters leveren snelle resultaten met minimale onderbreking van de werkzaamheden.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-a-portable-hardness-tester\">Wat is een draagbare hardheidsmeter?<\/h2>\n\n\n\n<p>Een draagbare hardheidsmeter is een handzaam of lichtgewicht instrument dat gebruikt wordt om de hardheid van materialen te bepalen door middel van dynamische impact of ultrasone contactmethoden. Het is ontworpen voor:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Grote en zware onderdelen<\/li>\n\n\n\n<li>Ge\u00efnstalleerde machines<\/li>\n\n\n\n<li>Veldinspecties<\/li>\n\n\n\n<li>Kwaliteitsborging op locatie<\/li>\n<\/ul>\n\n\n\n<p>De meeste moderne apparaten bieden directe digitale aflezingen en automatische schaalconversies.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-history-and-development\">Geschiedenis en ontwikkeling<\/h2>\n\n\n\n<p>Draagbare hardheidsmetingen werden praktisch na de uitvinding van de Leeb hardheidsmeting, die een dynamisch terugkaatsprincipe introduceerde. Deze doorbraak maakte het mogelijk om de hardheid te testen buiten het laboratorium.<\/p>\n\n\n\n<p>Latere ontwikkelingen introduceerden de ultrasone contactimpedantietechnologie (UCI), waardoor de precisie voor dunne en kleine componenten nog verder verbeterde.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-working-principles-of-portable-hardness-testers\">Werkingsprincipes van draagbare hardheidsmeters<\/h2>\n\n\n\n<p>Draagbare hardheidsmeters gebruiken meestal een van de twee primaire methoden:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-rebound-leeb-method\">1. Terugslagmethode (Leeb)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Een botslichaam raakt het materiaaloppervlak.<\/li>\n\n\n\n<li>De terugkaatssnelheid wordt gemeten.<\/li>\n\n\n\n<li>De hardheidswaarde (HL) wordt berekend op basis van energieverlies.<\/li>\n\n\n\n<li>Het apparaat zet HL om in HRC, HB, HV en andere schalen.<\/li>\n<\/ul>\n\n\n\n<p>Het meest geschikt voor grote, massieve metalen onderdelen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-ultrasonic-contact-impedance-uci-method\">2. Ultrasone contactimpedantiemethode (UCI)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Een trillende staaf met een diamanten indringlichaam maakt contact met het oppervlak.<\/li>\n\n\n\n<li>De frequentieverschuiving komt overeen met de hardheid van het materiaal.<\/li>\n\n\n\n<li>Ideaal voor dunne of kleine onderdelen.<\/li>\n<\/ul>\n\n\n\n<p>UCI biedt een hogere precisie voor fijne toepassingen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-components\">Belangrijkste onderdelen<\/h2>\n\n\n\n<p>Een typische draagbare hardheidsmeter bevat:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Impact of UCI-sonde<\/li>\n\n\n\n<li>Digitaal display<\/li>\n\n\n\n<li>Ingebouwde microprocessor<\/li>\n\n\n\n<li>Oplaadbare batterij<\/li>\n\n\n\n<li>Module voor gegevensopslag<\/li>\n\n\n\n<li>USB- of Bluetooth-verbinding<\/li>\n<\/ul>\n\n\n\n<p>Geavanceerde modellen zijn voorzien van touchscreeninterfaces en cloudintegratie.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-supported-hardness-scales\">Ondersteunde hardheidsschalen<\/h2>\n\n\n\n<p>De meeste draagbare testers kunnen meerdere hardheidsschalen weergeven, waaronder:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HL (Leeb-schaal)<\/li>\n\n\n\n<li>HRC (Rockwell C)<\/li>\n\n\n\n<li>HRB (Rockwell B)<\/li>\n\n\n\n<li>HB (Brinell)<\/li>\n\n\n\n<li>HV (Vickers)<\/li>\n\n\n\n<li>HS (Shore, voor metalen in sommige gevallen)<\/li>\n<\/ul>\n\n\n\n<p>Automatische conversie vereenvoudigt normoverschrijdende evaluatie.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-advantages-of-portable-hardness-tester\">Voordelen van draagbare hardheidsmeter<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-on-site-testing\">Testen op locatie<\/h3>\n\n\n\n<p>Je hoeft geen zware onderdelen te vervoeren.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-fast-results\">Snelle resultaten<\/h3>\n\n\n\n<p>Directe digitale uitlezing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-non-destructive-testing\">Niet-destructief onderzoek<\/h3>\n\n\n\n<p>Laat slechts een kleine inkeping achter.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-versatility\">Veelzijdigheid<\/h3>\n\n\n\n<p>Werkt op verschillende metalen en legeringen.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-cost-efficiency\">Kosteneffici\u00ebntie<\/h3>\n\n\n\n<p>Vermindert stilstand en logistieke kosten.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-limitations\">Beperkingen<\/h2>\n\n\n\n<p>Hoewel draagbare testers zeer nuttig zijn, hebben ze enkele beperkingen:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Het oppervlak moet relatief glad zijn<\/li>\n\n\n\n<li>Lichtgewicht onderdelen kunnen ondersteuning nodig hebben<\/li>\n\n\n\n<li>Nauwkeurigheid is afhankelijk van juiste kalibratie<\/li>\n\n\n\n<li>Conversiewaarden kunnen per materiaal licht verschillen<\/li>\n<\/ul>\n\n\n\n<p>Een goede training verhoogt de betrouwbaarheid.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-applications-across-industries\">Toepassingen in verschillende sectoren<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-oil-amp-gas\">Olie &amp; gas<\/h3>\n\n\n\n<p>Gebruikt voor:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Inspectie van pijpleidingen<\/li>\n\n\n\n<li>Verificatie van drukvaten<\/li>\n\n\n\n<li>Testen van de warmte-be\u00efnvloede zone (HAZ) van lassen<\/li>\n<\/ul>\n\n\n\n<p>Zorgt ervoor dat de veiligheidsnormen worden nageleefd.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-power-generation\">Stroomopwekking<\/h3>\n\n\n\n<p>Test turbineassen, rotoren en ketelonderdelen.<\/p>\n\n\n\n<p>Voorkomt onverwachte mechanische storingen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-automotive-industry\">Auto-industrie<\/h3>\n\n\n\n<p>Evalueert de hardheid van:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Motorblokken<\/li>\n\n\n\n<li>Versnellingen<\/li>\n\n\n\n<li>Assen<\/li>\n\n\n\n<li>Chassisonderdelen<\/li>\n<\/ul>\n\n\n\n<p>Verbetert de duurzaamheidscontrole.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-aerospace-industry\">Ruimtevaartindustrie<\/h3>\n\n\n\n<p>Bevestigt de hardheid van het materiaal in structurele onderdelen waar veiligheid van cruciaal belang is.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-construction-and-heavy-machinery\">Bouw en zware machines<\/h3>\n\n\n\n<p>Inspecteert structurele stalen balken en zware apparatuur.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28-800x800.jpg\" alt=\"\" class=\"wp-image-30280\" srcset=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28-800x800.jpg 800w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28-300x300.jpg 300w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28-150x150.jpg 150w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28-768x768.jpg 768w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28-12x12.jpg 12w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28-400x400.jpg 400w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28-700x700.jpg 700w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/28.jpg 1024w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-portable-hardness-tester-for-weld-inspection\">Draagbare hardheidsmeter voor lasinspectie<\/h2>\n\n\n\n<p>Laszones vereisen vaak een strikte hardheidscontrole om scheuren of broosheid te voorkomen.<\/p>\n\n\n\n<p>Draagbare testers zijn ideaal voor:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Inspecties v\u00f3\u00f3r gebruik<\/li>\n\n\n\n<li>Controle warmtebehandeling na het lassen<\/li>\n\n\n\n<li>Veldcontroles<\/li>\n<\/ul>\n\n\n\n<p>Ze bieden een snelle en betrouwbare meting van de lashardheid.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-accuracy-considerations\">Nauwkeurigheidsoverwegingen<\/h2>\n\n\n\n<p>Nauwkeurigheid is afhankelijk van:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Juiste voorbereiding van het oppervlak<\/li>\n\n\n\n<li>Voldoende materiaaldikte<\/li>\n\n\n\n<li>Juiste sondeselectie<\/li>\n\n\n\n<li>Stabiele ondersteuning van het monster<\/li>\n\n\n\n<li>Regelmatige kalibratie<\/li>\n<\/ul>\n\n\n\n<p>Het naleven van standaarden zorgt voor betrouwbare resultaten.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-calibration-and-standards\">Kalibratie en standaarden<\/h2>\n\n\n\n<p>Draagbare hardheidsmeters moeten gekalibreerd worden met behulp van gecertificeerde referentieblokken.<\/p>\n\n\n\n<p>Gangbare standaarden zijn onder andere:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ASTM-standaarden voor hardheidsmeting<\/li>\n\n\n\n<li>ISO-normen voor materiaaltesten<\/li>\n<\/ul>\n\n\n\n<p>Routinematige kalibratie garandeert consistente metingen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-digital-features-and-data-management\">Digitale functies en gegevensbeheer<\/h2>\n\n\n\n<p>Moderne draagbare testers bieden:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Groot intern geheugen<\/li>\n\n\n\n<li>Statistische analyse (gemiddelde, max, min, standaardafwijking)<\/li>\n\n\n\n<li>USB uitvoer<\/li>\n\n\n\n<li>Bluetooth-gegevensoverdracht<\/li>\n\n\n\n<li>PC software-integratie<\/li>\n<\/ul>\n\n\n\n<p>Digitale traceerbaarheid verbetert kwaliteitsbeheersystemen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-choosing-the-right-portable-hardness-tester\">De juiste draagbare hardheidsmeter kiezen<\/h2>\n\n\n\n<p>Houd bij het kiezen van een draagbare tester rekening met het volgende:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Materiaalsoort en hardheidsbereik<\/li>\n\n\n\n<li>Afmetingen en gewicht van onderdelen<\/li>\n\n\n\n<li>Vereiste hardheidsschaal<\/li>\n\n\n\n<li>Testfrequentie<\/li>\n\n\n\n<li>Milieuomstandigheden<\/li>\n\n\n\n<li>Budget<\/li>\n<\/ul>\n\n\n\n<p>Zware industrie\u00ebn geven vaak de voorkeur aan rebound testers, terwijl precisiesectoren wellicht de voorkeur geven aan UCI-systemen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-maintenance-and-care\">Onderhoud en verzorging<\/h2>\n\n\n\n<p>Goed onderhoud omvat:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Inspectie van botslichamen<\/li>\n\n\n\n<li>Slijtage van het indringlichaam controleren<\/li>\n\n\n\n<li>Tasteroppervlakken reinigen<\/li>\n\n\n\n<li>Regelmatig kalibreren<\/li>\n<\/ul>\n\n\n\n<p>Preventieve zorg verlengt de levensduur van apparatuur.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-johoyd-portable-hardness-tester-solutions\">Johoyd draagbare hardheidsmeter oplossingen<\/h2>\n\n\n\n<p>Betrouwbaar <strong>Draagbare hardheidsmeter<\/strong> systemen vereisen precisietechniek en naleving van internationale normen. <strong>Johoyd<\/strong>, door <strong><a href=\"https:\/\/hardnesstests.com\/nl\/\">https:\/\/hardnesstests.com<\/a><\/strong>, biedt geavanceerde draagbare hardheidsmeters die gebruik maken van terugkaatsing en ultrasone methoden. De systemen van Johoyd zijn ontworpen voor industri\u00eble veldtesten en ondersteunen meerdere hardheidsschalen, digitale opslag en naleving van ASTM\/ISO om nauwkeurige en herhaalbare resultaten te garanderen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-future-trends\">Toekomstige trends<\/h2>\n\n\n\n<p>Nieuwe ontwikkelingen zijn onder andere:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Draadloze cloudsynchronisatie<\/li>\n\n\n\n<li>AI-ondersteunde hardheidsanalyse<\/li>\n\n\n\n<li>Verbeterde miniaturisatie<\/li>\n\n\n\n<li>Langere levensduur van de batterij<\/li>\n\n\n\n<li>Industrie 4.0 integratie<\/li>\n<\/ul>\n\n\n\n<p>Draagbare hardheidsmetingen blijven evolueren naar slimmere diagnostiek in het veld.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\">Veelgestelde vragen<\/h2>\n\n\n\n<p><strong>Wat is de meest gebruikte draagbare hardheidsmeter?<\/strong><br>De Leeb terugkaatshardheidsmeter wordt veel gebruikt voor zware metalen onderdelen.<\/p>\n\n\n\n<p><strong>Kunnen draagbare testers meerdere schalen meten?<\/strong><br>Ja, de meeste apparaten zetten meetwaarden om in HRC, HB, HV en meer.<\/p>\n\n\n\n<p><strong>Zijn draagbare tests nauwkeurig?<\/strong><br>Ja, mits goed gekalibreerd en onder de juiste omstandigheden gebruikt.<\/p>\n\n\n\n<p><strong>Kan het lassen testen?<\/strong><br>Ja, draagbare testers zijn ideaal om de hardheid van lassen te inspecteren.<\/p>\n\n\n\n<p><strong>Doet de afwerking van het oppervlak ertoe?<\/strong><br>Ja, gladdere oppervlakken verbeteren de meetconsistentie.<\/p>\n\n\n\n<p><strong>Is het geschikt voor dunne materialen?<\/strong><br>UCI-testers zijn beter voor dunne materialen dan terugslagtesters.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\">Conclusie<\/h2>\n\n\n\n<p>A <strong>Draagbare hardheidsmeter<\/strong> is een essentieel hulpmiddel voor industrie\u00ebn die snelle, betrouwbare en on-site hardheidsmetingen nodig hebben. Door niet-destructief te kunnen testen zonder apparatuur te demonteren, verminderen draagbare testers de stilstandtijd aanzienlijk en verbeteren ze de operationele effici\u00ebntie.<\/p>\n\n\n\n<p>Met geavanceerde draagbare hardheidsmeters van <strong>Johoyd<\/strong> op <strong>hardnesstests.com<\/strong>, Fabrikanten en inspectieteams kunnen in het veld nauwkeurige, normconforme hardheidscontroles uitvoeren. Investeren in de juiste draagbare hardheidsmeter zorgt voor veiligheid, betrouwbaarheid en consistente kwaliteitscontrole bij industri\u00eble werkzaamheden.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction A Portable Hardness Tester is a compact, field-ready device designed to measure the hardness of metals directly at the<\/p>","protected":false},"author":4,"featured_media":30225,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[117],"tags":[],"class_list":["post-30502","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hardness-tester"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Portable Hardness Tester - hardnesstests<\/title>\n<meta name=\"description\" content=\"Discover how a Portable Hardness Tester enables fast, reliable, and on-site hardness measurement for metals across oil &amp; gas, automotive, aerospace, and heavy industry.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hardnesstests.com\/nl\/portable-hardness-tester-2\/\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Portable Hardness Tester\" \/>\n<meta property=\"og:description\" content=\"Discover how a Portable Hardness Tester enables fast, reliable, and on-site hardness measurement for metals across oil &amp; gas, automotive, aerospace, and heavy industry.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hardnesstests.com\/nl\/portable-hardness-tester-2\/\" \/>\n<meta property=\"og:site_name\" content=\"hardnesstests\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-03T06:19:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-03T06:19:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2025\/12\/9.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"tingting\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Geschreven door\" \/>\n\t<meta name=\"twitter:data1\" content=\"tingting\" \/>\n\t<meta name=\"twitter:label2\" content=\"Geschatte leestijd\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/hardnesstests.com\\\/portable-hardness-tester-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hardnesstests.com\\\/portable-hardness-tester-2\\\/\"},\"author\":{\"name\":\"tingting\",\"@id\":\"https:\\\/\\\/hardnesstests.com\\\/tr\\\/#\\\/schema\\\/person\\\/4dfcde616788fc5d9ece9551a87be8ce\"},\"headline\":\"Portable Hardness Tester\",\"datePublished\":\"2026-03-03T06:19:37+00:00\",\"dateModified\":\"2026-03-03T06:19:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/hardnesstests.com\\\/portable-hardness-tester-2\\\/\"},\"wordCount\":932,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/hardnesstests.com\\\/tr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/hardnesstests.com\\\/portable-hardness-tester-2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/hardnesstests.com\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/9.jpg\",\"articleSection\":[\"Hardness Tester\"],\"inLanguage\":\"nl-NL\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/hardnesstests.com\\\/portable-hardness-tester-2\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/hardnesstests.com\\\/portable-hardness-tester-2\\\/\",\"url\":\"https:\\\/\\\/hardnesstests.com\\\/portable-hardness-tester-2\\\/\",\"name\":\"Portable Hardness Tester - 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