{"id":5612,"date":"2026-03-19T09:02:16","date_gmt":"2026-03-19T01:02:16","guid":{"rendered":"https:\/\/ots-testequipment.net\/?p=5612"},"modified":"2026-03-23T11:26:12","modified_gmt":"2026-03-23T03:26:12","slug":"significado-e-diferencas-de-incerteza-erros-e-tolerancia","status":"publish","type":"post","link":"https:\/\/ots-testequipment.net\/pt\/blog\/significado-e-diferencas-de-incerteza-erros-e-tolerancia\/","title":{"rendered":"Significado e diferen\u00e7as de incerteza, erros e toler\u00e2ncia"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar o \u00edndice\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ots-testequipment.net\/pt\/blog\/significado-e-diferencas-de-incerteza-erros-e-tolerancia\/#What_is_Measurement_Uncertainty\" >O que \u00e9 a incerteza de medi\u00e7\u00e3o?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ots-testequipment.net\/pt\/blog\/significado-e-diferencas-de-incerteza-erros-e-tolerancia\/#How_to_Calculate_Uncertainty\" >Como calcular a incerteza?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ots-testequipment.net\/pt\/blog\/significado-e-diferencas-de-incerteza-erros-e-tolerancia\/#What_is_Measurement_Error\" >O que \u00e9 o erro de medi\u00e7\u00e3o?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ots-testequipment.net\/pt\/blog\/significado-e-diferencas-de-incerteza-erros-e-tolerancia\/#Types_of_Errors\" >Tipos de erros<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ots-testequipment.net\/pt\/blog\/significado-e-diferencas-de-incerteza-erros-e-tolerancia\/#What_is_Tolerance\" >O que \u00e9 a toler\u00e2ncia?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ots-testequipment.net\/pt\/blog\/significado-e-diferencas-de-incerteza-erros-e-tolerancia\/#Difference_Between_Uncertainty_Error_and_Tolerance\" >Diferen\u00e7a entre incerteza, erro e toler\u00e2ncia<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/ots-testequipment.net\/pt\/blog\/significado-e-diferencas-de-incerteza-erros-e-tolerancia\/#Conclusion\" >Conclus\u00e3o<\/a><\/li><\/ul><\/nav><\/div>\n<p><span style=\"font-weight: 400;\">\u00c9 fundamental conhecer o significado e as diferen\u00e7as de incerteza, erros e toler\u00e2ncia. A raz\u00e3o \u00e9 que estes par\u00e2metros ajudam a criar pe\u00e7as funcionais. Lembre-se, quando efectuamos medi\u00e7\u00f5es, as leituras ou resultados nunca s\u00e3o exactos. Isto \u00e9 verdade independentemente do facto de medirmos manualmente ou utilizando m\u00e1quinas avan\u00e7adas.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Como resultado, permanece uma d\u00favida sobre os resultados da medi\u00e7\u00e3o. \u00c9 por isso que a utiliza\u00e7\u00e3o de par\u00e2metros como a incerteza e a toler\u00e2ncia \u00e9 \u00fatil. Recorde-se que estes par\u00e2metros s\u00e3o amplamente utilizados em ensaios laboratoriais e no fabrico de pe\u00e7as. Neste artigo, irei discutir a incerteza, os erros e a toler\u00e2ncia e as suas principais diferen\u00e7as. Vamos come\u00e7ar.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Measurement_Uncertainty\"><\/span><b>O que \u00e9 a incerteza de medi\u00e7\u00e3o?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"alignnone  wp-image-5618\" src=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Uncertainty-300x225.webp\" alt=\"O que \u00e9 a incerteza de medi\u00e7\u00e3o\" width=\"500\" height=\"375\" srcset=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Uncertainty-300x225.webp 300w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Uncertainty-768x576.webp 768w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Uncertainty-16x12.webp 16w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Uncertainty.webp 1000w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">A incerteza \u00e9 um par\u00e2metro importante utilizado em diferentes laborat\u00f3rios e ensaios. D\u00e1 a ideia de que a medi\u00e7\u00e3o efectuada n\u00e3o \u00e9 100% precisa. Devem ser tidas em conta algumas possibilidades ou erros durante o fabrico ou o ensaio. Por outras palavras, a incerteza indica a probabilidade de erros numa medi\u00e7\u00e3o exacta. Mostra que a medi\u00e7\u00e3o final pode ser ligeiramente superior ou inferior \u00e0 medi\u00e7\u00e3o registada.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Ver\u00e1 a incerteza escrita como \u00b10.1, \u00b10.2, \u00b10.3, e assim por diante. Os sinais de mais e menos indicam que a medida espec\u00edfica pode ser maior ou menor por esse n\u00famero espec\u00edfico. Suponha que mede 20 cm com \u00b10,5 de certeza. Isto significa que a medida est\u00e1 ligeiramente errada, com uma varia\u00e7\u00e3o poss\u00edvel de \u00b10,5.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Isto significa que a medida pode ser 20,5 cm ou 19,5 cm. Esta \u00e9 a melhor forma de eliminar a confus\u00e3o e transmitir a mensagem de que a medi\u00e7\u00e3o n\u00e3o deve ser considerada perfeita. \u00c9 importante notar que a incerteza \u00e9 considerada n\u00e3o s\u00f3 para as medi\u00e7\u00f5es manuais, mas tamb\u00e9m para as medi\u00e7\u00f5es efectuadas por m\u00e1quinas. Lembre-se que tanto os seres humanos como as m\u00e1quinas est\u00e3o sempre sujeitos a erros.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Diferentes factores podem tornar a leitura ligeiramente menos precisa. Estes incluem a humidade, a temperatura, as marca\u00e7\u00f5es de medi\u00e7\u00e3o em grande escala, entre outros.  No entanto, ao utilizar a incerteza, est\u00e1 a reduzir a probabilidade de erros. Esta incerteza \u00e9 ainda mais cr\u00edtica quando se fabricam pe\u00e7as ou produtos que requerem precis\u00e3o.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_Calculate_Uncertainty\"><\/span><b>Como calcular a incerteza?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Existem duas leituras ou medi\u00e7\u00f5es utilizadas nos laborat\u00f3rios. Estas incluem os valores medidos e os valores reais. O valor real determina os erros e a incerteza. Assim, o c\u00e1lculo da incerteza ajuda a determinar em que medida um valor medido se desvia do valor real. Eis a f\u00f3rmula exacta que pode utilizar para calcular a incerteza:<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Incerteza \u2248 (Valor m\u00e1ximo - Valor m\u00ednimo) \u00f7 2<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Suponha que tem uma vara e a mede com instrumentos de medi\u00e7\u00e3o espec\u00edficos. Durante essas medi\u00e7\u00f5es, obt\u00e9m leituras diferentes, tais como 50 cm, 49,3 cm, 49,5 cm, 50,5 cm e 50,7 cm. Isto significa que, de cada vez que mediu, encontrou uma ligeira diferen\u00e7a. Uma vez que existem desvios nas medi\u00e7\u00f5es, isto indica incerteza.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Para o calcular, deve tomar o valor m\u00e1ximo de medi\u00e7\u00e3o e subtra\u00ed-lo ao valor m\u00ednimo de medi\u00e7\u00e3o. Por exemplo:<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Incerteza = (50,7 - 49,3) \u00f7 2 = 0,7 cm (ou \u00b10,7 cm)<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">O valor medido \u00e9 de cerca de 50 cm \u00b10,7 cm. Isto significa que o valor real nestas medi\u00e7\u00f5es pode ser 50 cm \u00b10,7 cm. Isto indica que o valor pode ser 0,7 cm inferior ou 50 cm superior a 50 cm. Tamb\u00e9m \u00e9 poss\u00edvel calcular a incerteza utilizando esta f\u00f3rmula para valores diferentes.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Measurement_Error\"><\/span><b>O que \u00e9 o erro de medi\u00e7\u00e3o?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"alignnone  wp-image-5617\" src=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Error-300x225.webp\" alt=\"O que \u00e9 o erro de medi\u00e7\u00e3o\" width=\"499\" height=\"374\" srcset=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Error-300x225.webp 300w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Error-768x576.webp 768w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Error-16x12.webp 16w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/What-is-Measurement-Error.webp 1000w\" sizes=\"(max-width: 499px) 100vw, 499px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Como mencionado anteriormente, a incerteza indica a probabilidade de um erro. No entanto, o erro propriamente dito \u00e9 a diferen\u00e7a entre o valor medido e o valor real. Existem principalmente dois tipos de erros: positivos e negativos. Por exemplo, se o valor medido for 30 cm. No entanto, o valor real desta medida \u00e9 33 cm.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Isto significa que h\u00e1 erros de -3 cm. Como \u00e9 menos, seriam erros negativos. Da mesma forma, se o seu valor real for 30 cm e o valor medido for 33 cm. Nesse caso, haver\u00e1 um erro de 3 cm, o que se designa por erro positivo. Tem d\u00favidas sobre como calcular os erros? Aqui est\u00e1 a f\u00f3rmula:<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Erro = Valor medido - Valor real<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">\u00c9 de salientar que as medi\u00e7\u00f5es nunca podem ser 100%, mesmo com os m\u00e9todos mais actualizados. V\u00e1rios factores causam erros de medi\u00e7\u00e3o. Estes incluem problemas nas ferramentas, impacto ambiental, falha da pessoa, etc. Infelizmente, n\u00e3o podemos controlar todos os factores para obter uma medi\u00e7\u00e3o 100% precisa. Se pud\u00e9ssemos, ter\u00edamos eliminado os erros. No entanto, conhecer o erro \u00e9 sempre ben\u00e9fico quando se trabalha num laborat\u00f3rio com <\/span><a href=\"https:\/\/ots-testequipment.net\/pt\/test-equipment\/\"><b>diferentes equipamentos<\/b><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Types_of_Errors\"><\/span><b>Tipos de erros<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Os erros podem ser classificados de acordo com as suas causas. Alguns erros podem ser atenuados at\u00e9 certo ponto, mas requerem o m\u00e1ximo cuidado e ambientes controlados. Eis a lista destes tipos:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Erro humano<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Erro aleat\u00f3rio<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Erro sistem\u00e1tico<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Erros de calibra\u00e7\u00e3o<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Como j\u00e1 referi, os erros s\u00e3o inevit\u00e1veis, independentemente da qualidade das suas capacidades de medi\u00e7\u00e3o. S\u00e3o inevit\u00e1veis, pelo que compreend\u00ea-los \u00e9 crucial para mitigar o seu impacto em pe\u00e7as ou ensaios de precis\u00e3o. Os erros humanos est\u00e3o entre os tipos mais comuns resultantes de neglig\u00eancia humana. Mesmo que me\u00e7a com a m\u00e1xima aten\u00e7\u00e3o, continuar\u00e1 a cometer erros. O erro aleat\u00f3rio ocorre devido a um fator imprevis\u00edvel.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">O intervalo de erro pode variar de cada vez devido a erros aleat\u00f3rios. Os erros sistem\u00e1ticos e de calibra\u00e7\u00e3o est\u00e3o intimamente relacionados. S\u00e3o causados por uma calibra\u00e7\u00e3o incorrecta ou por ferramentas de medi\u00e7\u00e3o defeituosas. No entanto, este erro \u00e9 geralmente consistente, independentemente do n\u00famero de vezes que se efectua a medi\u00e7\u00e3o. Porqu\u00ea? Porque est\u00e1 a utilizar ferramentas defeituosas ou porque estas n\u00e3o est\u00e3o calibradas para lhe dar uma leitura exacta.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Tolerance\"><\/span><b>O que \u00e9 a toler\u00e2ncia?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">A toler\u00e2ncia \u00e9 outro par\u00e2metro importante, mas \u00e9 diferente tanto da incerteza como dos erros. Como? A raz\u00e3o \u00e9 que a toler\u00e2ncia indica uma varia\u00e7\u00e3o permitida ou permiss\u00edvel no valor. Por outras palavras, refere-se ao desvio aceit\u00e1vel para o ensaio ou montagem de diferentes pe\u00e7as. Suponha que tem uma haste com um comprimento de 70 mm com uma toler\u00e2ncia de \u00b10,4 mm.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Isto significa que a haste tem de ter 70 mm. No entanto, se for 69,6 ou 70,6, continua a ser aceit\u00e1vel e a sua opera\u00e7\u00e3o espec\u00edfica n\u00e3o ir\u00e1 parar. Este \u00b10,4 mm \u00e9 de facto uma varia\u00e7\u00e3o ou desvio, mas este intervalo \u00e9 aceit\u00e1vel. Este sinal de mais-menos (\u00b1) indica o intervalo de varia\u00e7\u00e3o, que n\u00e3o \u00e9 de molde a quebrar o processo de teste ou de fabrico. Suponha que est\u00e1 a realizar um teste num <\/span><a href=\"https:\/\/ots-testequipment.net\/pt\/environmental-chambers\/\"><b>c\u00e2mara de testes ambientais<\/b><\/a><span style=\"font-weight: 400;\">. Neste ensaio, a toler\u00e2ncia de temperatura \u00e9 de \u00b12 graus Celsius.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Nesse caso, o seu teste n\u00e3o ter\u00e1 problemas se a temperatura estiver entre 32 ou 28 e 32 graus Celsius. O desvio de \u00b12 graus Celsius \u00e9 aceit\u00e1vel para este teste, e continuar\u00e1 a obter resultados exactos. Isto permite-lhe manter a temperatura definida para 30 graus Celsius, mas com varia\u00e7\u00f5es aceit\u00e1veis. Isto \u00e9 muito \u00fatil se as suas c\u00e2maras ambientais forem antigas e tiverem uma ligeira flutua\u00e7\u00e3o de temperatura.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Difference_Between_Uncertainty_Error_and_Tolerance\"><\/span><b>Diferen\u00e7a entre incerteza, erro e toler\u00e2ncia<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"alignnone  wp-image-5615\" src=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/Difference-Between-Uncertainty-Error-and-Tolerance-300x225.webp\" alt=\"Diferen\u00e7a entre incerteza, erro e toler\u00e2ncia\" width=\"500\" height=\"375\" srcset=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/Difference-Between-Uncertainty-Error-and-Tolerance-300x225.webp 300w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/Difference-Between-Uncertainty-Error-and-Tolerance-768x576.webp 768w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/Difference-Between-Uncertainty-Error-and-Tolerance-16x12.webp 16w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2026\/03\/Difference-Between-Uncertainty-Error-and-Tolerance.webp 1000w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Incerteza, erros e toler\u00e2ncia s\u00e3o conceitos distintos. De facto, t\u00eam objectivos diferentes para engenheiros e fabricantes. Em primeiro lugar, a incerteza refere-se \u00e0 possibilidade de erros. Indica que os fabricantes n\u00e3o devem confiar cegamente na medi\u00e7\u00e3o. H\u00e1 uma possibilidade de erros na leitura, que deve ser considerada. Isto ajuda a tomar decis\u00f5es no fabrico de pe\u00e7as em que a precis\u00e3o \u00e9 mais importante.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Os erros, por outro lado, s\u00e3o desvios entre os valores medidos e os valores reais. Fazem-se medi\u00e7\u00f5es, mas o valor real est\u00e1 claramente desfasado, o que resulta num erro. Os erros de fabrico ajudam a identificar o problema exato. Quando os fabricantes se deparam com erros, identificam as poss\u00edveis causas, como ferramentas defeituosas ou erro humano. Como resultado, tentam eliminar os erros tanto quanto poss\u00edvel. Isto acaba por ajud\u00e1-los a fabricar pe\u00e7as ou produtos fi\u00e1veis.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Por \u00faltimo, mas n\u00e3o menos importante, a toler\u00e2ncia permite um desvio aceit\u00e1vel. Por outras palavras, indica um limite para al\u00e9m do qual um erro \u00e9 aceit\u00e1vel. Designada por mais-menos (\u00b1), indica se o erro cometido afecta o funcionamento das pe\u00e7as. Suponhamos que duas pe\u00e7as precisam de ser encaixadas para funcionarem corretamente. A toler\u00e2ncia representa o desvio aceit\u00e1vel para que as pe\u00e7as se encaixem umas nas outras. Em termos simples, a toler\u00e2ncia significa que as pe\u00e7as ou produtos s\u00e3o \u00fateis se tiverem erros num intervalo espec\u00edfico (aceit\u00e1vel).\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Incerteza<\/b><\/td>\n<td><b>Erro<\/b><\/td>\n<td><b>Toler\u00e2ncia<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">D\u00favida de medi\u00e7\u00e3o<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Desvio do valor real<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Limite permitido<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Sobre o processo<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Sobre o valor real<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Sobre o design<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Mostra fiabilidade<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Mostra o erro<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Assegura o funcionamento<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Baseado em probabilidades<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Diferen\u00e7a exacta<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Foco na aceitabilidade<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><b>Conclus\u00e3o<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Concluamos - os ensaios laboratoriais e o fabrico de produtos t\u00eam requisitos diferentes. Por vezes, envolvem medi\u00e7\u00f5es e par\u00e2metros. Estes par\u00e2metros indicam se as diferentes pe\u00e7as far\u00e3o parte do produto final e se o teste foi bem sucedido ou n\u00e3o. Tamb\u00e9m ajudam na tomada de decis\u00f5es, determinando se a medi\u00e7\u00e3o da pe\u00e7a \u00e9 aceit\u00e1vel ou n\u00e3o.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">A incerteza, o erro e a toler\u00e2ncia s\u00e3o elementos integrantes de todos os processos de produ\u00e7\u00e3o.  A incerteza indica o intervalo poss\u00edvel de erro ou d\u00favida na medi\u00e7\u00e3o. Pelo contr\u00e1rio, um erro indica um desvio claro entre os valores medidos e os valores reais. Por \u00faltimo, a toler\u00e2ncia refere-se ao intervalo aceit\u00e1vel de desvio ou erro. Os fabricantes utilizam os tr\u00eas par\u00e2metros para produzir um produto que seja adequado para utiliza\u00e7\u00e3o em situa\u00e7\u00f5es reais.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>\u00c9 fundamental conhecer o significado e as diferen\u00e7as de incerteza, erros e toler\u00e2ncia. A raz\u00e3o \u00e9 que estes par\u00e2metros ajudam a criar pe\u00e7as funcionais. Lembre-se, quando efectuamos medi\u00e7\u00f5es, as leituras ou resultados nunca s\u00e3o exactos. Isto \u00e9 verdade independentemente de as medi\u00e7\u00f5es serem efectuadas manualmente ou com m\u00e1quinas avan\u00e7adas.    Como resultado, permanece uma d\u00favida...<\/p>","protected":false},"author":13,"featured_media":5616,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5612","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Meaning and Differences of Uncertainty, Errors, and Tolerance<\/title>\n<meta name=\"description\" content=\"Learn the meaning and differences of uncertainty, errors, and tolerance. 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