{"id":41661,"date":"2022-12-08T09:51:00","date_gmt":"2022-12-08T07:51:00","guid":{"rendered":"https:\/\/www.nordtec.se\/measurement-facts-and-theory\/facts-about-moisture\/"},"modified":"2026-04-15T10:44:33","modified_gmt":"2026-04-15T08:44:33","slug":"facts-about-moisture","status":"publish","type":"page","link":"https:\/\/www.nordtec.se\/en\/measurement-facts-and-theory\/facts-about-moisture\/","title":{"rendered":"Facts about moisture"},"content":{"rendered":"\n<div class=\"wp-block-stackable-subtitle stk-block-subtitle stk-block stk-2a53052 topptitel-kalibrering\" data-block-id=\"2a53052\"><p class=\"stk-block-subtitle__text stk-subtitle has-text-align-center\"><span style=\"color: #00d084;\" class=\"stk-highlight\">FACTS FUKT<\/span><\/p><\/div>\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-d067bf6 fet-stor-rubrik\" id=\"kortfattad-fuktfakta\" data-block-id=\"d067bf6\"><h2 class=\"stk-block-heading__text has-text-align-center stk-block-heading--use-theme-margins\">Brief moisture facts<\/h2><\/div>\n\n<p class=\"has-text-align-center ingress wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Humidity is an important parameter for measuring indoor climate. If the air is too humid, mold can develop. However, indoor climate is not only of great importance in offices and homes. Even in industry, humidity is tested to ensure compliance with product and production quality criteria. Various factors affect the humidity measurement. You can find out what these are and what you need to take into account when using humidity measuring instruments in the factual information below.<\/span><\/p>\n\n<div class=\"wp-block-columns fullbreddsbild is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\" data-block-type=\"core\">\n<div class=\"wp-block-column alignfull is-layout-flow wp-block-column-is-layout-flow\" data-block-type=\"core\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-1af4148\" data-block-id=\"1af4148\"><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-27397\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/knowledgebase_measuring-parameter_Feuchte_1000x427.jpg\" width=\"1000\" height=\"427\" alt=\"Blackboard, moisture measurement facts\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/knowledgebase_measuring-parameter_Feuchte_1000x427.jpg 1000w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/knowledgebase_measuring-parameter_Feuchte_1000x427-300x128.jpg 300w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/knowledgebase_measuring-parameter_Feuchte_1000x427-768x328.jpg 768w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/knowledgebase_measuring-parameter_Feuchte_1000x427-416x178.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/knowledgebase_measuring-parameter_Feuchte_1000x427-64x27.jpg 64w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-15ff6c4\" id=\"strong-span-style-color-000000-class-stk-highlight-luftfuktighet-span-strong\" data-block-id=\"15ff6c4\"><style>.stk-15ff6c4{margin-bottom:2px !important}<\/style><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\"><strong><span style=\"color: #000000;\" class=\"stk-highlight\">Air humidity<\/span><\/strong><\/h2><\/div>\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\" data-block-type=\"core\"><a href=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/fuktdiagram-med-baciller.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/fuktdiagram-med-baciller.jpg\" alt=\"Moisture diagram with bacilli\" class=\"wp-image-26794\" width=\"480\" height=\"418\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/fuktdiagram-med-baciller.jpg 640w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/fuktdiagram-med-baciller-300x261.jpg 300w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/fuktdiagram-med-baciller-416x362.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/fuktdiagram-med-baciller-64x56.jpg 64w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><\/a><\/figure>\n<\/div>\n<p class=\"wp-block-paragraph\"><strong><span style=\"color: #000000;\" class=\"stk-highlight\">Optimal indoor humidity<\/span><\/strong><\/p>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Measuring humidity is becoming increasingly important. The adjacent image shows the impact of different humidity levels at normal room temperature. By aiming for an optimal level, many problems can be avoided. For us humans, it is about avoiding ill health. For materials, this may involve avoiding disruptions in manufacturing processes or storing in a climate that provides the best durability.<\/span><\/p>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Humidity levels can fluctuate rapidly. For example, an outdoor temperature drop of 10 \u00b0C can reduce indoor humidity by almost 15 %RH. Measurement provides knowledge of the situation and the possibility to influence!<\/span><\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<div class=\"wp-block-stackable-divider stk-block-divider stk-block stk-0169bf8 avdelare\" data-block-id=\"0169bf8\"><style>.stk-0169bf8 hr.stk-block-divider__hr{width:100% !important}<\/style><hr class=\"stk-block-divider__hr\"\/><\/div>\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-76ba23f\" id=\"fysiska-principer-for-matparametern-fuktighet\" data-block-id=\"76ba23f\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Physical principles of the measurement parameter humidity.<\/h2><\/div>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Atmospheric air always contains a certain amount of water vapor. Like all hygroscopic substances, air has a limited ability to absorb water. This limit is called saturation. Below the saturation level, moist air is indistinguishable from dry air to the naked eye. Above the saturation limit, the excess water is visible as fine water droplets (condensation) &#8211; a fog forms.<\/span><\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\" data-block-type=\"core\"><a href=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-vatteninnehall-luft_800px.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-vatteninnehall-luft_800px.jpg\" alt=\"\" class=\"wp-image-27400\" width=\"522\" height=\"348\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-vatteninnehall-luft_800px.jpg 800w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-vatteninnehall-luft_800px-300x200.jpg 300w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-vatteninnehall-luft_800px-768x512.jpg 768w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-vatteninnehall-luft_800px-416x277.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-vatteninnehall-luft_800px-64x43.jpg 64w\" sizes=\"auto, (max-width: 522px) 100vw, 522px\" \/><\/a><\/figure>\n<\/div>\n<p class=\"wp-block-paragraph\"><strong><span style=\"color: #000000;\" class=\"stk-highlight\">Moisture absorption capacity<\/span><\/strong><\/p>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">The ability of air to absorb moisture depends on the air temperature. The warmer the air is, the more water it can absorb. We can imagine a sponge that changes its absorption capacity depending on the temperature. At 0 \u00b0C, the sponge can absorb 4.8 g of water (equivalent to 100% humidity). At more than 4.8 g, the fungus starts to drip. If the fungus has stored 2.4 g of water, this corresponds to 50% relative humidity at 0\u00b0C.<\/span><\/p>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">At 20 \u00b0C, the fungus can store 17.3 g of water (so the fungus has 100% relative humidity at 17.3 g of water). If the fungus has stored 2.4 g of water at 20 \u00b0C, this corresponds to approx. 14% relative humidity.<\/span><\/p>\n\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-7f1d790 stk-block-background ikonblock\" data-block-id=\"7f1d790\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-icon stk-block-icon has-text-align-left stk-block stk-e814c68\" data-block-id=\"e814c68\"><style>.stk-e814c68 .stk--svg-wrapper .stk--inner-svg svg:last-child,.stk-e814c68 .stk--svg-wrapper .stk--inner-svg svg:last-child :is(g,path,rect,polygon,ellipse){fill:#ff9900 !important}<\/style><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><lineargradient id=\"linear-gradient-e814c68\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-e-814-c-68-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-e-814-c-68-color-2)\"><\/stop><\/lineargradient><\/defs><\/svg><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"fas\" data-icon=\"exclamation-circle\" class=\"svg-inline--fa fa-exclamation-circle fa-w-16\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"><\/path><\/svg><\/div><\/span><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-810316d\" id=\"span-style-color-000000-class-stk-highlight-om-temperaturen-sjunker-okar-den-relativa-luftfuktigheten-vid-samma-vatteninnehall-span\" data-block-id=\"810316d\"><p class=\"stk-block-heading__text stk-block-heading--use-theme-margins\"><span style=\"color: #000000;\" class=\"stk-highlight\">If the temperature drops, the relative humidity increases (for the same water content)!<\/span><\/p><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-divider stk-block-divider stk-block stk-6f46f8a\" data-block-id=\"6f46f8a\"><style>.stk-6f46f8a hr.stk-block-divider__hr{height:1px !important;width:100% !important}<\/style><hr class=\"stk-block-divider__hr\"\/><\/div>\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ed39303\" id=\"fuktparametrar\" data-block-id=\"ed39303\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Moisture parameters.<\/h2><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-462270a\" data-block-id=\"462270a\"><style>.stk-462270a{margin-bottom:44px !important}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-462270a-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-13285b4\" data-block-id=\"13285b4\"><style>.stk-13285b4-container{border-radius:0px !important;overflow:hidden !important;box-shadow:0 5px 5px 0 rgba(18,63,82,0.035) !important}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-13285b4-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-13285b4-inner-blocks\">\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-ddc644d\" data-block-id=\"ddc644d\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-ddc644d-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-241c02e\" data-block-id=\"241c02e\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-241c02e-container stk--no-background stk--no-padding\"><div class=\"has-text-align-left stk-block-content stk-inner-blocks stk-241c02e-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-9b3c014\" id=\"absolut-luftfuktighet\" data-block-id=\"9b3c014\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Absolute humidity<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The absolute humidity (AH) is calculated by dividing the weight of the water in the air by the volume of the current air mass. The absolute humidity is usually expressed in g\/m\u00b3.<\/p>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-730201a\" data-block-id=\"730201a\"><style>.stk-730201a{max-width:100% !important}<\/style><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-27407\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_absolut-fukt_600px.jpg\" width=\"600\" height=\"224\" alt=\"Absolute humidity formula\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_absolut-fukt_600px.jpg 600w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_absolut-fukt_600px-300x112.jpg 300w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_absolut-fukt_600px-416x155.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_absolut-fukt_600px-64x24.jpg 64w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-7f72850\" data-block-id=\"7f72850\"><style>.stk-7f72850-container{box-shadow:0 5px 5px 0 rgba(18,63,82,0.035) !important}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-7f72850-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-7f72850-inner-blocks\">\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-46cfe35\" data-block-id=\"46cfe35\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-46cfe35-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-77d464d\" data-block-id=\"77d464d\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-77d464d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-77d464d-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3a8d26e\" id=\"relativ-luftfuktighet\" data-block-id=\"3a8d26e\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Relative humidity<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The relative humidity describes the relationship between the current humidity in the air and the maximum humidity. Relative humidity is given in percent (%RH) or (%RF).<\/p>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-e677c0a\" data-block-id=\"e677c0a\"><style>.stk-e677c0a{max-width:100% !important}<\/style><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-27409\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_relativ-fukt_600px.jpg\" width=\"600\" height=\"224\" alt=\"Relative humidity formula\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_relativ-fukt_600px.jpg 600w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_relativ-fukt_600px-300x112.jpg 300w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_relativ-fukt_600px-416x155.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/kalkyl_relativ-fukt_600px-64x24.jpg 64w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-divider stk-block-divider stk-block stk-cf918bd\" data-block-id=\"cf918bd\"><style>.stk-cf918bd hr.stk-block-divider__hr{height:1px !important;width:100% !important}<\/style><hr class=\"stk-block-divider__hr\"\/><\/div>\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-f84e858\" id=\"max-luftfuktighet-och-daggpunktstemperatur\" data-block-id=\"f84e858\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Maximum humidity and dew point temperature<\/h2><\/div>\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\" data-block-type=\"core\"><a href=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-max-fukt-daggpunkt-600px2.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-max-fukt-daggpunkt-600px2.jpg\" alt=\"Table for maximum dew point\" class=\"wp-image-27406\" width=\"482\" height=\"550\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-max-fukt-daggpunkt-600px2.jpg 600w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-max-fukt-daggpunkt-600px2-263x300.jpg 263w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-max-fukt-daggpunkt-600px2-416x475.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/tabell-max-fukt-daggpunkt-600px2-64x73.jpg 64w\" sizes=\"auto, (max-width: 482px) 100vw, 482px\" \/><\/a><\/figure>\n<\/div>\n<p class=\"wp-block-paragraph\"><strong>Maximum humidity<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Is the maximum possible absolute humidity at a given temperature. It is achieved when the partial pressure of the water vapor in the air is equal to the saturation pressure of the water at the corresponding temperature. In this condition, the relative humidity is 100%.  <\/span><\/p>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">If the maximum humidity is exceeded, excess water vapor precipitates in the form of condensation (dripping). The saturation humidity is an absolute humidity and is given in g\/m\u00b3.<\/span><\/p>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\"><strong>Dew point temperature<\/strong><\/span><\/p>\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">The dew point temperature is defined as the temperature at which the current water vapor content of the air (100% humidity) is at the maximum possible level. This means that the water vapor pressure is the same as the saturation vapor pressure. The dew point temperature is therefore a parameter that depends on the actual temperature. The dew point temperature can be determined from the ambient temperature and the relative humidity and conversely the relative humidity can be determined from the ambient and dew point temperature. In addition, the absolute humidity of the air can be calculated from the same parameters.<\/span><\/p>\n\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-7a46a5d stk-block-background ikonblock\" data-block-id=\"7a46a5d\"><style>.stk-7a46a5d{margin-bottom:23px !important}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-icon stk-block-icon has-text-align-left stk-block stk-81d0377\" data-block-id=\"81d0377\"><style>.stk-81d0377 .stk--svg-wrapper .stk--inner-svg svg:last-child,.stk-81d0377 .stk--svg-wrapper .stk--inner-svg svg:last-child :is(g,path,rect,polygon,ellipse){fill:#ff9900 !important}<\/style><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><lineargradient id=\"linear-gradient-81d0377\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-81-d-0377-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-81-d-0377-color-2)\"><\/stop><\/lineargradient><\/defs><\/svg><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"fas\" data-icon=\"exclamation-circle\" class=\"svg-inline--fa fa-exclamation-circle fa-w-16\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"><\/path><\/svg><\/div><\/span><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-7dd63c9\" id=\"span-style-color-000000-class-stk-highlight-om-fasta-objekt-har-en-lagre-temperatur-an-den-omgivande-daggpunktstemperaturen-kommer-fukt-att-fallas-ut-pa-dess-ytor-manniskor-kanner-sig-mest-komfortabla-vid-en-relativ-luftfuktighet-mellan-30-till-65-rh-span\" data-block-id=\"7dd63c9\"><p class=\"stk-block-heading__text stk-block-heading--use-theme-margins\"><span style=\"color: #000000;\" class=\"stk-highlight\">If solid objects have a lower temperature than the ambient dew point temperature, moisture will precipitate on their surfaces. People feel most comfortable at a relative humidity between 30 to 65% RH.<\/span><\/p><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-divider stk-block-divider stk-block stk-ecb23e1\" data-block-id=\"ecb23e1\"><style>.stk-ecb23e1 hr.stk-block-divider__hr{width:100% !important}<\/style><hr class=\"stk-block-divider__hr\"\/><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-1cb79a5\" data-block-id=\"1cb79a5\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-1cb79a5-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-f0cb7de\" data-block-id=\"f0cb7de\"><style>.stk-f0cb7de-container{background-color:#bbbbbb !important}.stk-f0cb7de-container:before{background-color:#bbbbbb !important}@media screen and (min-width:768px){.stk-f0cb7de{flex:1 1 33.3% !important}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-f0cb7de-container stk-hover-parent\"><div class=\"stk-block-content stk-inner-blocks stk-f0cb7de-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-eb860a1\" data-block-id=\"eb860a1\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-icon stk-block-icon has-text-align-left stk-block stk-5b451e2\" data-block-id=\"5b451e2\"><style>.stk-5b451e2 .stk--svg-wrapper .stk--inner-svg svg:last-child,.stk-5b451e2 .stk--svg-wrapper .stk--inner-svg svg:last-child :is(g,path,rect,polygon,ellipse){fill:#ffffff !important}<\/style><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><lineargradient id=\"linear-gradient-5b451e2\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-5-b-451-e-2-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-5-b-451-e-2-color-2)\"><\/stop><\/lineargradient><\/defs><\/svg><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"lightbulb\" class=\"svg-inline--fa fa-lightbulb fa-w-11\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 352 512\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M176 80c-52.94 0-96 43.06-96 96 0 8.84 7.16 16 16 16s16-7.16 16-16c0-35.3 28.72-64 64-64 8.84 0 16-7.16 16-16s-7.16-16-16-16zM96.06 459.17c0 3.15.93 6.22 2.68 8.84l24.51 36.84c2.97 4.46 7.97 7.14 13.32 7.14h78.85c5.36 0 10.36-2.68 13.32-7.14l24.51-36.84c1.74-2.62 2.67-5.7 2.68-8.84l.05-43.18H96.02l.04 43.18zM176 0C73.72 0 0 82.97 0 176c0 44.37 16.45 84.85 43.56 115.78 16.64 18.99 42.74 58.8 52.42 92.16v.06h48v-.12c-.01-4.77-.72-9.51-2.15-14.07-5.59-17.81-22.82-64.77-62.17-109.67-20.54-23.43-31.52-53.15-31.61-84.14-.2-73.64 59.67-128 127.95-128 70.58 0 128 57.42 128 128 0 30.97-11.24 60.85-31.65 84.14-39.11 44.61-56.42 91.47-62.1 109.46a47.507 47.507 0 0 0-2.22 14.3v.1h48v-.05c9.68-33.37 35.78-73.18 52.42-92.16C335.55 260.85 352 220.37 352 176 352 78.8 273.2 0 176 0z\"><\/path><\/svg><\/div><\/span><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-4192090\" id=\"span-style-color-ffffff-class-stk-highlight-undvik-matfel-alla-tips-i-ett-ogonkast-span\" data-block-id=\"4192090\"><h4 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\"><span style=\"color: #ffffff;\" class=\"stk-highlight\">Avoiding measurement errors: all tips at a glance<\/span><\/h4><\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #ffffff;\" class=\"stk-highlight\">&#8211; Measure in the middle of the room.<br\/>&#8211; Measure at chest height.<br\/>&#8211; Shield strong radiation sources with your body.<br\/>&#8211; Hold the sensor at arm&#8217;s length and sideways from your body.<br\/>&#8211; Hold the sensor in your hand and wave it quickly back and forth in the air.<\/span><\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-ed5f1d2\" data-block-id=\"ed5f1d2\"><style>@media screen and (min-width:768px){.stk-ed5f1d2{flex:1 1 66.7% !important}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-ed5f1d2-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-ed5f1d2-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-c6c5fbf\" id=\"hur-kan-man-undvika-matfel\" data-block-id=\"c6c5fbf\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">How to avoid measurement errors<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Like temperature, humidity is best measured in the middle of a room. In addition, humidity may be recorded in the corners of the room, behind cabinets or similar, which should be noted separately in the report.  <\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Even if you only open the door or are present in the room for a long time, the humidity in the room changes. For this reason, the following applies: Enter the room quickly, close the door and take the measurement immediately.  <\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">For humidity sensors, the humidity must first &#8220;diffuse&#8221; into the plastic layer of the sensor. The duration of the acclimatization time is critically dependent on how well the air circulates around the sensor. It is shortened if the probe is moved in the air.<\/span><\/p>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\" data-block-type=\"core\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" data-block-type=\"core\">\n<figure class=\"wp-block-table is-style-stripes\" data-block-type=\"core\"><table class=\"has-fixed-layout\"><thead><tr><th><span style=\"color: #000000;\" class=\"stk-highlight\">A typical situation<\/span><\/th><th><span style=\"color: #000000;\" class=\"stk-highlight\">What is happening?<\/span><\/th><th><span style=\"color: #000000;\" class=\"stk-highlight\">The right way to measure<\/span><\/th><\/tr><\/thead><tbody><tr><td><strong><span style=\"color: #000000;\" class=\"stk-highlight\">Influence of temperature<\/span><\/strong><\/td><td><\/td><td><\/td><\/tr><tr><td><span style=\"color: #000000;\" class=\"stk-highlight\">Instruments and sensors are transported at 0 \u00b0C ambient temperature during winter.<br\/>At the measurement site, the measurement equipment enters a room with 20 \u00b0C and 50% RH.<\/span><\/td><td><span style=\"color: #000000;\" class=\"stk-highlight\">Condensation occurs on the humidity sensor: the &#8220;microclimate&#8221; in the sensor at 0 \u00b0C is the maximum saturation of the air. 4.8 g\/m\u00b3. However, the air in the room contains 9 g\/m\u00b3 of moisture.<\/span><\/td><td><span style=\"color: #000000;\" class=\"stk-highlight\">Hold the sensor in your hand and wave it quickly back and forth in the air. It &#8220;breaks up&#8221; the microclimate (0 \u00b0C) in the sensor and the actual room climate of 20 \u00b0C and 50% RH reaches the humidity sensor.<\/span><\/td><\/tr><tr><td><strong><span style=\"color: #000000;\" class=\"stk-highlight\">Your impact<\/span><\/strong><\/td><td><\/td><td><\/td><\/tr><tr><td><span style=\"color: #000000;\" class=\"stk-highlight\">When measuring, the sensor comes into contact with the user&#8217;s breathing.<\/span><\/td><td><span style=\"color: #000000;\" class=\"stk-highlight\">Breathing on the sensor with moisture-saturated breathing air increases the relative humidity (% RH) of the instrument&#8217;s environment and thus the temperature.<\/span><\/td><td><span style=\"color: #000000;\" class=\"stk-highlight\">Hold the moisturizer at arm&#8217;s length from your mouth and wave it around.<\/span><\/td><\/tr><tr><td><span style=\"color: #000000;\" class=\"stk-highlight\"><strong>The right place to measure<\/strong><\/span><\/td><td><\/td><td><\/td><\/tr><tr><td><span style=\"color: #000000;\" class=\"stk-highlight\">At 25\u00b0C, a humidity of 50% relative humidity is measured in the center of the room.<\/span><\/td><td><span style=\"color: #000000;\" class=\"stk-highlight\">In the same room, at 15\u00b0C, the measuring instrument shows a relative humidity of 90% near the wall.  <\/span><br\/><br\/><span style=\"color: #000000;\" class=\"stk-highlight\">Which value is correct?<\/span><\/td><td><span style=\"color: #000000;\" class=\"stk-highlight\">Like temperature, humidity is best measured in the middle of the room at a height of about 1 meter. If you move the sensor from one climate zone to another without waving it properly in the air, you must allow for an acclimatization time of up to 10 minutes before taking a reading.<\/span><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0f86c34\" id=\"fuktmatande-instrument-fran-nordtec\" data-block-id=\"0f86c34\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Moisture measuring instruments from Nordtec.<\/h2><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-bc4a63c produktforslag\" data-block-id=\"bc4a63c\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-bc4a63c-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-7ce8959\" data-block-id=\"7ce8959\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-7ce8959-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-7ce8959-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-8ff5f70\" data-block-id=\"8ff5f70\"><style>.stk-8ff5f70 .stk-img-wrapper img{object-position:56.00000000000001% 64% !important}<\/style><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-27567\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-625-indoor-climate-V5_800pxx450.jpg\" width=\"800\" height=\"450\" alt=\"Moisture meter testo 625\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-625-indoor-climate-V5_800pxx450.jpg 800w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-625-indoor-climate-V5_800pxx450-300x169.jpg 300w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-625-indoor-climate-V5_800pxx450-768x432.jpg 768w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-625-indoor-climate-V5_800pxx450-416x234.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-625-indoor-climate-V5_800pxx450-64x36.jpg 64w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\"><strong>Manual instrument<\/strong><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Testo has a wide range of portable hand instruments for moisture measurement. Ranging from small pocket instruments to more advanced instruments for highly accurate measurements with various calculation functions.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.nordtec.se\/en\/products\/measuring-instruments\/moisture-meters\/\">See the range<\/a><\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-7da6708\" data-block-id=\"7da6708\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-7da6708-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-7da6708-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-fd68cff\" data-block-id=\"fd68cff\"><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-27568\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-176H1_800x450.jpg\" width=\"800\" height=\"450\" alt=\"Moisture logger testo 176-h1\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-176H1_800x450.jpg 800w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-176H1_800x450-300x169.jpg 300w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-176H1_800x450-768x432.jpg 768w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-176H1_800x450-416x234.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/testo-176H1_800x450-64x36.jpg 64w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span style=\"color: #000000;\" class=\"stk-highlight\">Moisture loggers<\/span><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">Again, there are many different logs to <br\/>choose from. From small compact ones to larger multi-channel ones with internal or external sensors. Intuitive software for programming and reading.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.nordtec.se\/en\/products\/measuring-instruments\/moisture-meters\/moisture-loggers\/\">See the range<\/a><\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v2 stk-column stk-block stk-2903c0f\" data-block-id=\"2903c0f\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-2903c0f-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-2903c0f-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-82e2171\" data-block-id=\"82e2171\"><style>.stk-82e2171 .stk-img-wrapper{width:100% !important}<\/style><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-27574\" src=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/T-Saveris-BWC-LP-CFR_800x450-2.jpg\" width=\"800\" height=\"450\" alt=\"testo Saveris software\" srcset=\"https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/T-Saveris-BWC-LP-CFR_800x450-2.jpg 800w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/T-Saveris-BWC-LP-CFR_800x450-2-300x169.jpg 300w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/T-Saveris-BWC-LP-CFR_800x450-2-768x432.jpg 768w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/T-Saveris-BWC-LP-CFR_800x450-2-416x234.jpg 416w, https:\/\/www.nordtec.se\/wp-content\/uploads\/2022\/12\/T-Saveris-BWC-LP-CFR_800x450-2-64x36.jpg 64w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span style=\"color: #000000;\" class=\"stk-highlight\">Remote monitoring<\/span><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\" class=\"stk-highlight\">We have 4 monitoring systems in our program &#8211; all with their special features that are adapted for different applications in e.g.. indoor climate, construction, food, museums, etc.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.nordtec.se\/en\/presentation-of-measurement-systems\/\">See the range<\/a><\/p>\n<\/div><\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Learn about absolute and relative humidity and dew point temperature, how to avoid measurement errors and practical tips to increase your chances of making accurate measurements.<\/p>\n","protected":false},"author":1,"featured_media":39910,"parent":41629,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","footnotes":""},"class_list":["post-41661","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Facts about moisture | Nordtec<\/title>\n<meta name=\"description\" content=\"Learn about absolute and relative humidity and dew point temperature, how to avoid measurement errors and practical tips to increase your chances of making accurate measurements.\" \/>\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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