{"id":31159,"date":"2024-10-04T17:28:28","date_gmt":"2024-10-04T17:28:28","guid":{"rendered":"https:\/\/geneqonline.com\/?post_type=product&p=31159"},"modified":"2024-10-04T17:31:36","modified_gmt":"2024-10-04T17:31:36","slug":"psychrometre-fronde","status":"publish","type":"product","link":"https:\/\/geneqonline.com\/fr\/product\/psychrometre-fronde\/","title":{"rendered":"Psychrom\u00e8tre fronde avec certificat NIST"},"content":{"rendered":"

Psychrom\u00e8tre fronde avec certificat NIST<\/h2>\n

Psychrom\u00e8tre \u00e0 \u00e9lingue de Bacharach pour indiquer le pourcentage d’humidit\u00e9 relative sur la base du principe du thermom\u00e8tre \u00e0 bulbe humide et du thermom\u00e8tre \u00e0 bulbe sec. Le bo\u00eetier en plastique de l’instrument est \u00e9quip\u00e9 d’une \u00e9chelle de conversion permettant de calculer le pourcentage d’humidit\u00e9 relative.<\/p>\n

Inclut la certification de tra\u00e7abilit\u00e9 NIST.<\/p>\n

Utilisation<\/h3>\n

L’humidit\u00e9 relative peut \u00eatre mesur\u00e9e \u00e0 l’aide d’un instrument appel\u00e9 hygrom\u00e8tre. L’hygrom\u00e8tre le plus simple – un psychrom\u00e8tre \u00e0 \u00e9lingue – se compose de deux thermom\u00e8tres mont\u00e9s ensemble avec une poign\u00e9e attach\u00e9e \u00e0 une cha\u00eene. L’un des thermom\u00e8tres est ordinaire. L’autre, dont le bulbe est recouvert d’une m\u00e8che en tissu, est appel\u00e9 thermom\u00e8tre \u00e0 bulbe humide.\n<\/p>\n

Lorsqu’une mesure doit \u00eatre prise, la m\u00e8che est d’abord tremp\u00e9e dans l’eau, puis l’instrument est mis en mouvement. Pendant le tourbillonnement, l’eau s’\u00e9vapore de la m\u00e8che, ce qui refroidit le thermom\u00e8tre \u00e0 bulbe humide. Les temp\u00e9ratures des deux thermom\u00e8tres sont ensuite relev\u00e9es.<\/p>\n

Si l’air ambiant est sec, une plus grande quantit\u00e9 d’humidit\u00e9 s’\u00e9vapore de la m\u00e8che, ce qui refroidit davantage le thermom\u00e8tre \u00e0 cuvette humide, d’o\u00f9 une plus grande diff\u00e9rence entre les temp\u00e9ratures des deux thermom\u00e8tres. Si l’air ambiant contient le plus d’humidit\u00e9 possible – si l’humidit\u00e9 relative est de 100 % – il n’y a pas de diff\u00e9rence entre les deux temp\u00e9ratures. Les m\u00e9t\u00e9orologues ont \u00e9tabli des tableaux de ces diff\u00e9rences pour chaque degr\u00e9 de temp\u00e9rature afin que l’observateur puisse trouver facilement l’humidit\u00e9 relative.<\/p>\n

Humidit\u00e9 relative – Temp\u00e9rature en Celsius<\/h3>\n

Le tableau ci-dessous peut \u00eatre utilis\u00e9 pour estimer l’humidit\u00e9 relative de l’air si les temp\u00e9ratures du bulbe sec et du bulbe humide sont connues.
\nTemp\u00e9rature du bulbe sec = Tdb \/ Temp\u00e9rature du bulbe humide = Twb
\nHumidit\u00e9 relative \u2013 RH (%)
\nTdb \u2013 Twb
\n(o<\/sup>C)<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Humidit\u00e9 relative \u2013 RH (%)<\/td>\n<\/tr>\n
Tdb \u2013 Twb
\n(o<\/sup>C)<\/td>\n		Temp\u00e9rature de bulbe sec \u2013 Tdb (o<\/sup>C)<\/td>\n<\/tr>\n
15<\/td>\n18<\/td>\n20<\/td>\n22<\/td>\n25<\/td>\n27<\/td>\n30<\/td>\n33<\/td>\n<\/tr>\n
1<\/td>\n90<\/td>\n91<\/td>\n91<\/td>\n92<\/td>\n92<\/td>\n92<\/td>\n93<\/td>\n93<\/td>\n<\/tr>\n
2<\/td>\n80<\/td>\n82<\/td>\n83<\/td>\n84<\/td>\n85<\/td>\n85<\/td>\n86<\/td>\n87<\/td>\n<\/tr>\n
3<\/td>\n71<\/td>\n73<\/td>\n75<\/td>\n76<\/td>\n77<\/td>\n78<\/td>\n79<\/td>\n80<\/td>\n<\/tr>\n
4<\/td>\n62<\/td>\n65<\/td>\n67<\/td>\n68<\/td>\n70<\/td>\n71<\/td>\n73<\/td>\n74<\/td>\n<\/tr>\n
5<\/td>\n53<\/td>\n57<\/td>\n59<\/td>\n61<\/td>\n64<\/td>\n65<\/td>\n67<\/td>\n69<\/td>\n<\/tr>\n
6<\/td>\n44<\/td>\n49<\/td>\n52<\/td>\n54<\/td>\n57<\/td>\n59<\/td>\n61<\/td>\n63<\/td>\n<\/tr>\n
7<\/td>\n36<\/td>\n42<\/td>\n45<\/td>\n47<\/td>\n51<\/td>\n53<\/td>\n55<\/td>\n58<\/td>\n<\/tr>\n
8<\/td>\n28<\/td>\n34<\/td>\n38<\/td>\n41<\/td>\n45<\/td>\n47<\/td>\n50<\/td>\n53<\/td>\n<\/tr>\n
9<\/td>\n21<\/td>\n27<\/td>\n31<\/td>\n34<\/td>\n39<\/td>\n41<\/td>\n45<\/td>\n48<\/td>\n<\/tr>\n
10<\/td>\n13<\/td>\n20<\/td>\n25<\/td>\n28<\/td>\n33<\/td>\n36<\/td>\n40<\/td>\n43<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Humidit\u00e9 relative – Temp\u00e9rature en Fahrenheit<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Humidit\u00e9 relative \u2013 RH (%)<\/td>\n<\/tr>\n
Tdb \u2013 Twb
\n(o<\/sup>F)<\/td>\n		Temp\u00e9rature de bulbe sec \u2013 Tdb (o<\/sup>F)<\/td>\n<\/tr>\n
60<\/td>\n64<\/td>\n68<\/td>\n72<\/td>\n76<\/td>\n80<\/td>\n84<\/td>\n88<\/td>\n<\/tr>\n
1<\/td>\n94<\/td>\n95<\/td>\n95<\/td>\n95<\/td>\n96<\/td>\n96<\/td>\n96<\/td>\n96<\/td>\n<\/tr>\n
2<\/td>\n90<\/td>\n90<\/td>\n90<\/td>\n91<\/td>\n91<\/td>\n92<\/td>\n92<\/td>\n92<\/td>\n<\/tr>\n
3<\/td>\n84<\/td>\n85<\/td>\n85<\/td>\n86<\/td>\n87<\/td>\n88<\/td>\n88<\/td>\n89<\/td>\n<\/tr>\n
4<\/td>\n78<\/td>\n80<\/td>\n81<\/td>\n82<\/td>\n83<\/td>\n84<\/td>\n84<\/td>\n85<\/td>\n<\/tr>\n
5<\/td>\n73<\/td>\n75<\/td>\n76<\/td>\n78<\/td>\n79<\/td>\n80<\/td>\n80<\/td>\n81<\/td>\n<\/tr>\n
6<\/td>\n68<\/td>\n70<\/td>\n72<\/td>\n73<\/td>\n75<\/td>\n76<\/td>\n77<\/td>\n78<\/td>\n<\/tr>\n
7<\/td>\n63<\/td>\n66<\/td>\n67<\/td>\n69<\/td>\n71<\/td>\n72<\/td>\n73<\/td>\n74<\/td>\n<\/tr>\n
8<\/td>\n58<\/td>\n61<\/td>\n63<\/td>\n65<\/td>\n67<\/td>\n68<\/td>\n70<\/td>\n71<\/td>\n<\/tr>\n
9<\/td>\n54<\/td>\n57<\/td>\n59<\/td>\n61<\/td>\n63<\/td>\n65<\/td>\n66<\/td>\n68<\/td>\n<\/tr>\n
10<\/td>\n49<\/td>\n52<\/td>\n55<\/td>\n57<\/td>\n59<\/td>\n61<\/td>\n63<\/td>\n64<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Support, maintenance, calibration –<\/span>
\n1 800 463-4363<\/span>
\n <\/p>\n","protected":false},"featured_media":31148,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[1347,633],"product_tag":[],"class_list":{"0":"post-31159","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bacharach-fr","7":"product_cat-environnement","9":"first","10":"instock","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/product\/31159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/comments?post=31159"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/media\/31148"}],"wp:attachment":[{"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/media?parent=31159"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/product_brand?post=31159"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/product_cat?post=31159"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/geneqonline.com\/fr\/wp-json\/wp\/v2\/product_tag?post=31159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}