{"id":19947,"date":"2026-03-08T18:08:19","date_gmt":"2026-03-08T10:08:19","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=19947"},"modified":"2026-03-17T18:02:46","modified_gmt":"2026-03-17T10:02:46","slug":"3-methods-to-identify-and-check-pnp-and-npn-sensor","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/pt\/3-methods-to-identify-and-check-pnp-and-npn-sensor\/","title":{"rendered":"3 M\u00e9todos para identificar e verificar o sensor PNP e NPN"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"19947\" class=\"elementor elementor-19947\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-aebaa6c e-flex e-con-boxed e-con e-parent\" data-id=\"aebaa6c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-308d7f6 elementor-widget elementor-widget-text-editor\" data-id=\"308d7f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Voc\u00ea j\u00e1 se deparou com esse problema?<\/span><\/p><p><span style=\"font-weight: 400;\">Seu <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/sensores-de-proximidade\/\"><span style=\"font-weight: 400;\">sensor de proximidade<\/span><\/a><\/span><span style=\"font-weight: 400;\"> est\u00e1 em uso h\u00e1 muito tempo, sua etiqueta se desgastou e ele parou de funcionar. Voc\u00ea deseja substitu\u00ed-lo, mas n\u00e3o tem certeza se deve escolher um tipo de sa\u00edda NPN ou PNP.<\/span><\/p><p><span style=\"font-weight: 400;\">Ent\u00e3o, como voc\u00ea pode identificar se o seu sensor \u00e9 NPN ou PNP?<\/span><\/p><p><span style=\"font-weight: 400;\">Isso \u00e9 simples para t\u00e9cnicos experientes, mas pode ser um desafio para iniciantes.<\/span><\/p><p><span style=\"font-weight: 400;\">Portanto, nesta postagem, compartilharemos tr\u00eas m\u00e9todos pr\u00e1ticos para determinar o tipo de sa\u00edda do seu sensor:<\/span><\/p><ol><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identifique a partir da placa de identifica\u00e7\u00e3o,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Teste com um mult\u00edmetro,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Verifique com um testador de sensor dedicado.<\/span><\/li><\/ol><p><span style=\"font-weight: 400;\">Vamos examinar as etapas detalhadas!<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6f906f4 elementor-widget elementor-widget-heading\" data-id=\"6f906f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Entendendo o sensor PNP NPN<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8967bc2 eael-product-grid-column-4 elementor-widget elementor-widget-eicon-woocommerce\" data-id=\"8967bc2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"eicon-woocommerce.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n        <div class=\"eael-product-grid eael-product-simple grid\" id=\"eael-product-grid\" data-widget-id=\"8967bc2\" data-page-id=\"19947\" data-nonce=\"024d9859c3\" >\n            <div class=\"woocommerce\">\n                <ul class=\"products eael-post-appender eael-post-appender-8967bc2\" data-ssi-desktop=\"no\" data-ssi-tablet=\"no\" data-ssi-mobile=\"no\" data-layout-mode=\"grid\"> <li class=\"product\">\n<div class=\"eael-product-wrap\" data-src=\"\" data-src-hover=\"\">\n    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-p-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail wvs-archive-product-image\" alt=\"SN04-P Sensor de proximidade indutivo\" loading=\"eager\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-300x300.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-150x150.jpg 150w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-12x12.jpg 12w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-600x600.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-100x100.jpg 100w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-64x64.jpg 64w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><div class=\"eael-product-title\">\n    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-p-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><h3 class=\"woocommerce-loop-product__title\">SN04-P Sensor de proximidade indutivo<\/h3><\/a>\n    <\/div>    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-p-inductive-proximity-sensor\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_19569\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"19569\" data-product_sku=\"\" aria-label=\"Leia mais sobre \u201cSN04-P Inductive Proximity Sensor\u201d\" rel=\"nofollow\" data-success_message=\"\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Leia mais<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_19569\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n    \n<\/div>\n\n<\/li> <li class=\"product\">\n<div class=\"eael-product-wrap\" data-src=\"\" data-src-hover=\"\">\n    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/photoelectric-sensor\/g30-photoelectric-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail wvs-archive-product-image\" alt=\"Sensor fotoel\u00e9trico Lorentzzi M30 tamanho da rosca G30\" loading=\"eager\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-300x300.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-150x150.jpg 150w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-600x600.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-100x100.jpg 100w, 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https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-150x150.jpg 150w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-600x600.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-100x100.jpg 100w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-64x64.jpg 64w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><div class=\"eael-product-title\">\n    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-n-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><h3 class=\"woocommerce-loop-product__title\">Sensor de proximidade indutivo SN04-N<\/h3><\/a>\n    <\/div>    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-n-inductive-proximity-sensor\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_7211\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"7211\" data-product_sku=\"\" aria-label=\"Leia mais sobre \u201cSN04-N Inductive Proximity Sensor\u201d\" rel=\"nofollow\" data-success_message=\"\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Leia mais<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_7211\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n    \n<\/div>\n\n<\/li> <li class=\"product\">\n<div class=\"eael-product-wrap\" data-src=\"\" data-src-hover=\"\">\n    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/inductive-proximity-sensor\/m30-proximity-sensor-30mm-diameter-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail wvs-archive-product-image\" alt=\"Sensor de proximidade M30 foto-1\" loading=\"eager\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-300x300.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-150x150.jpg 150w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-600x600.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-100x100.jpg 100w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-64x64.jpg 64w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><div class=\"eael-product-title\">\n    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/inductive-proximity-sensor\/m30-proximity-sensor-30mm-diameter-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><h3 class=\"woocommerce-loop-product__title\">Sensor de proximidade indutivo M30, com 30 mm de di\u00e2metro<\/h3><\/a>\n    <\/div>    <a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/inductive-proximity-sensor\/m30-proximity-sensor-30mm-diameter-inductive-proximity-sensor\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_6968\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"6968\" data-product_sku=\"\" aria-label=\"Leia mais sobre \u201cM30 Proximity Sensor, 30mm Diameter Inductive Proximity Sensor\u201d\" rel=\"nofollow\" data-success_message=\"\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Leia mais<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_6968\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n    \n<\/div>\n\n<\/li><\/ul>            <\/div>\n        <\/div>\n\n        <script type=\"text\/javascript\">\n            jQuery(document).ready(function($) {\n                var $scope = jQuery(\".elementor-element-8967bc2\");\n                var $products = $('.products', $scope);\n                var $layout_mode = $products.data('layout-mode');\n                \n                if ( $layout_mode === 'masonry' ) {\n                    \/\/ init isotope\n                    var $isotope_products = $products.isotope({\n                        itemSelector: \"li.product\",\n                        layoutMode: $layout_mode,\n                        percentPosition: true\n                    });\n\n                    $isotope_products.imagesLoaded().progress( function() {\n                        $isotope_products.isotope('layout');\n                    })\n                    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src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection.jpg\" class=\"attachment-large size-large wp-image-19943\" alt=\"Conex\u00e3o do eletrodo comum dos sensores NPN e PNP\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1fe469c elementor-widget elementor-widget-text-editor\" data-id=\"1fe469c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Sensores NPN<\/b><span style=\"font-weight: 400;\">: Os sensores NPN s\u00e3o amplamente usados em pa\u00edses asi\u00e1ticos, como China e Jap\u00e3o. Normalmente, eles controlam o terminal negativo (0V) da fonte de alimenta\u00e7\u00e3o. Por exemplo, um sensor NPN normalmente aberto (NO) emite um sinal de n\u00edvel baixo quando detecta um objeto.<\/span><\/p><p><b>Sensores PNP<\/b><span style=\"font-weight: 400;\">: Ao contr\u00e1rio dos sensores NPN, os sensores PNP det\u00eam a maior parte do mercado na Europa e nos Estados Unidos. Normalmente, eles controlam o terminal positivo (VCC) da fonte de alimenta\u00e7\u00e3o. Da mesma forma, um sensor PNP normalmente aberto (NO) emite um sinal de alto n\u00edvel quando detecta um objeto.<\/span><\/p><p><span style=\"font-weight: 400;\">Dicas: Se quiser saber mais sobre as diferen\u00e7as entre os sensores NPN e PNP, leia nosso artigo: <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/pnp-vs-npn-proximity-sensors-key-differences-wiring-diagram-and-how-to-choose\/\"><span style=\"font-weight: 400;\">Sensores de proximidade PNP Vs NPN: Principais diferen\u00e7as, diagrama de fia\u00e7\u00e3o e como escolher<\/span><\/a><\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84b09c8 elementor-widget elementor-widget-heading\" data-id=\"84b09c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9todo 1: Verifique a placa de identifica\u00e7\u00e3o e o diagrama do circuito<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36239b0 elementor-widget elementor-widget-image\" data-id=\"36239b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates.jpg\" class=\"attachment-large size-large wp-image-19944\" alt=\"Distinguir entre sensores PNP e NPN por suas placas de identifica\u00e7\u00e3o\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3df7680 elementor-widget elementor-widget-text-editor\" data-id=\"3df7680\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A maneira mais simples de identificar se um sensor \u00e9 do tipo NPN ou PNP \u00e9 verificar sua placa de identifica\u00e7\u00e3o. O fio marrom (BN) precisa ser conectado ao terminal positivo da fonte de alimenta\u00e7\u00e3o, e o fio azul (BU) precisa ser conectado ao terminal negativo. N\u00e3o h\u00e1 diferen\u00e7a entre os sensores do tipo NPN e PNP nesse aspecto.<\/span><\/p><p><span style=\"font-weight: 400;\">A diferen\u00e7a est\u00e1 em seus fios de sinal (BK, fio preto).<\/span><\/p><p><span style=\"font-weight: 400;\">Conforme mostrado no lado direito do diagrama acima, o fio de sinal de um sensor do tipo PNP precisa ser conectado ao terminal negativo (BU, fio azul) para formar um circuito fechado completo.<\/span><\/p><p><span style=\"font-weight: 400;\">Por outro lado, o fio de sinal de um sensor do tipo NPN precisa ser conectado ao terminal positivo para formar um circuito fechado completo.<\/span><\/p><p><span style=\"font-weight: 400;\">Portanto, em compara\u00e7\u00e3o com os diagramas de fia\u00e7\u00e3o dos sensores do tipo PNP e NPN \u00e0 direita, o sensor no lado esquerdo do diagrama \u00e9 um sensor de sa\u00edda do tipo PNP.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4514b7 elementor-widget elementor-widget-heading\" data-id=\"f4514b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9todo 2: Medi\u00e7\u00e3o de tens\u00e3o com mult\u00edmetro (mais recomendado)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4a1a7e elementor-widget elementor-widget-text-editor\" data-id=\"a4a1a7e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Para engenheiros el\u00e9tricos ou eletricistas, um mult\u00edmetro \u00e9 a ferramenta de teste mais comumente usada. Ent\u00e3o, podemos us\u00e1-lo para testar o tipo de um sensor? A resposta \u00e9 sim. Abaixo est\u00e1 um guia sobre como usar um mult\u00edmetro para determinar se um sensor \u00e9 do tipo NPN ou PNP.<\/span><\/p><p><span style=\"font-weight: 400;\">Primeiro, prepare os seguintes materiais: <span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/cntnmcb.com\/residual-current-circuit-breaker-with-overcurrent-protection\/\" target=\"_blank\" rel=\"noopener\">um AC RCBO<\/a><\/span>, Uma fonte de alimenta\u00e7\u00e3o comutada de 24 VCC, o sensor em teste e um mult\u00edmetro.<\/span><\/p><p><span style=\"font-weight: 400;\">As etapas operacionais s\u00e3o as seguintes:<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0786356 elementor-widget elementor-widget-image\" data-id=\"0786356\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram.jpg\" class=\"attachment-large size-large wp-image-19945\" alt=\"Usando o mult\u00edmetro para identificar se o sensor \u00e9 PNP ou NPN, escreva o diagrama\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5edb142 elementor-widget elementor-widget-text-editor\" data-id=\"5edb142\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Conecte a alimenta\u00e7\u00e3o CA ao terminal de entrada da fonte de alimenta\u00e7\u00e3o comutada por meio do <span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/cntnmcb.com\/residual-current-circuit-breaker-with-overcurrent-protection\/\" target=\"_blank\" rel=\"noopener\">RCBO (disjuntor residual com prote\u00e7\u00e3o contra sobrecarga)<\/a><\/span> (Observa\u00e7\u00e3o: o RCBO deve estar no estado aberto nesse momento; n\u00e3o conecte a alimenta\u00e7\u00e3o).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Conecte o cabo de alimenta\u00e7\u00e3o do sensor \u00e0 fonte de alimenta\u00e7\u00e3o comutada: conecte o fio marrom ao terminal positivo (+24 V) da fonte de alimenta\u00e7\u00e3o comutada e o fio azul ao terminal negativo (0 V).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ajuste o mult\u00edmetro para a faixa de tens\u00e3o CC (DCV). Conecte a ponta de prova vermelha ao terminal positivo (+24 V) da fonte de alimenta\u00e7\u00e3o comutada e a ponta de prova preta ao fio de sinal preto (fio de sa\u00edda) do sensor.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Feche o RCBO para fornecer energia ao sensor. Em seguida, aproxime o objeto a ser medido da superf\u00edcie de detec\u00e7\u00e3o do sensor para ativ\u00e1-lo e, simultaneamente, observe o valor de tens\u00e3o exibido no mult\u00edmetro.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u00e9todo de julgamento:<\/span><\/li><\/ol><p><span style=\"font-weight: 400;\">Se o mult\u00edmetro exibir aproximadamente 24 V (ou seja, a tens\u00e3o da fonte de alimenta\u00e7\u00e3o), o sensor \u00e9 do tipo NPN (como o tipo NPN emite um n\u00edvel baixo, o fio preto \u00e9 condutor para o terra, de modo que a tens\u00e3o entre o terminal positivo e o fio preto \u00e9 de 24 V);<\/span><\/p><p><span style=\"font-weight: 400;\">Se o mult\u00edmetro exibir um valor pr\u00f3ximo a 0V, o sensor \u00e9 do tipo PNP (como o tipo PNP emite um n\u00edvel alto, o fio preto \u00e9 condutor do terminal positivo, de modo que a tens\u00e3o entre o terminal positivo e o fio preto \u00e9 0V).<\/span><\/p><p><span style=\"font-weight: 400;\">Observa\u00e7\u00e3o: Certifique-se de que a fia\u00e7\u00e3o esteja correta durante a opera\u00e7\u00e3o para evitar curtos-circuitos. O sensor deve estar em condi\u00e7\u00f5es de funcionamento durante a medi\u00e7\u00e3o, e devem ser tomadas precau\u00e7\u00f5es de seguran\u00e7a.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f6ed7b elementor-widget elementor-widget-heading\" data-id=\"9f6ed7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9todo 3: Usando um testador de sensor PNP\/NPN<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b70e30a elementor-widget elementor-widget-image\" data-id=\"b70e30a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor.jpg\" class=\"attachment-large size-large wp-image-19942\" alt=\"Uso do testador de sensor para confirmar o sensor PNP ou NPN\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a597db5 elementor-widget elementor-widget-text-editor\" data-id=\"a597db5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Se voc\u00ea tiver um or\u00e7amento suficiente e precisar distinguir frequentemente os tipos de sensores, o testador de sensores mostrado na imagem acima \u00e9 a melhor op\u00e7\u00e3o. Ele \u00e9 mais r\u00e1pido e mais simples do que usar um mult\u00edmetro.<\/span><\/p><p><span style=\"font-weight: 400;\">A seguir, explicaremos como usar esse testador de sensores.<\/span><\/p><p><span style=\"font-weight: 400;\">\u00c9 muito simples de usar. Basta conectar o fio marrom do sensor ao terminal positivo do testador, o fio azul ao terminal negativo e o fio de sinal do sensor ao terminal de sa\u00edda. Ap\u00f3s a fia\u00e7\u00e3o, ligue o testador e ele identificar\u00e1 automaticamente o tipo de sensor: se for do tipo PNP, a luz indicadora amarela PNP se acender\u00e1; se for do tipo NPN, a luz indicadora NPN se acender\u00e1.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a8fa3d1 elementor-widget elementor-widget-heading\" data-id=\"a8fa3d1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclus\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a93e961 elementor-widget elementor-widget-text-editor\" data-id=\"a93e961\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Em resumo, voc\u00ea pode determinar se o sensor \u00e9 do tipo NPN ou PNP lendo a placa de identifica\u00e7\u00e3o e o diagrama de fia\u00e7\u00e3o do sensor e usando um mult\u00edmetro ou um testador de sensor PNP\/NPN.<\/span><\/p><p><span style=\"font-weight: 400;\">Se voc\u00ea ainda tiver d\u00favidas sobre a diferencia\u00e7\u00e3o de sensores ou precisar de suporte t\u00e9cnico, <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/\"><span style=\"font-weight: 400;\">Lorentzzi Electric<\/span><\/a><\/span><span style=\"font-weight: 400;\"> oferece consultoria gratuita. Voc\u00ea pode entrar em contato conosco enviando um e-mail para <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"mailto:shonxu@lorentzzi.com\"><span style=\"font-weight: 400;\">shonxu@lorentzzi.com<\/span><\/a><\/span><span style=\"font-weight: 400;\">, e nossa equipe responder\u00e1 dentro de 24 horas.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Have you ever encountered this problem? Your proximity sensor has been in use for a long time, its label has worn off, and it has stopped working. You want to replace it, but you\u2019re not sure whether to choose an NPN or PNP output type. So how can you identify whether your sensor is NPN [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19946,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[110],"tags":[],"class_list":["post-19947","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sensor","desktop-align-center","tablet-align-left","mobile-align-left"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.0 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>3 Methods to Identify and Check PNP and NPN Sensor<\/title>\n<meta name=\"description\" content=\"In this blog post, we will provide you 3 methods to identify and check PNP and NPN sensor, click to learn more now!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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