{"id":3230,"date":"2018-12-21T21:38:24","date_gmt":"2018-12-21T19:38:24","guid":{"rendered":"http:\/\/www.inst-sim.com\/1\/?p=3230"},"modified":"2018-12-21T21:38:24","modified_gmt":"2018-12-21T19:38:24","slug":"rate-of-rise-hd","status":"publish","type":"post","link":"https:\/\/www.inst-sim.com\/1\/fg\/rate-of-rise-hd\/","title":{"rendered":"\u0643\u0627\u0634\u0641 \u0645\u0639\u062f\u0644 \u0627\u0631\u062a\u0641\u0627\u0639 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 Rate of Rise RR Heat Detector"},"content":{"rendered":"

Bimetal strips made up from brass and INVAR will deflect when heated due to the high expansion coefficient of the brass and the low expansion coefficient of the INVAR, which is 36% nickel steel. Deflection increases with temperature and could in itself be used to complete an electrical circuit and operate an alarm at some specific figure. However, rate of rise can be detected using two bimetal strips (Next Figure) of different thickness. These are set up parallel to each other and arranged to deflect in the same direction.<\/p>\n

Rapid temperature rise will cause the thinner element to deflect more quickly than the other, so causing contact to be made and the alarm circuit to be completed. A slow rise causes a similar deflection in both elements, so that a gap between the contacts persists, until a certain maximum temperature is reached when contact is made because of other differences in the make up of the strips.<\/p>\n

*<\/p>\n

\u062a\u0646\u062b\u0646\u064a \u0634\u0631\u064a\u062d\u0629 \u0645\u0632\u062f\u0648\u062c\u0629 \u0627\u0644\u0645\u0639\u062f\u0646 Bimetal Strip<\/span> \u0645\u0646 \u0627\u0644\u0646\u062d\u0627\u0633 \u0648 \u0645\u0627\u062f\u0629 \u0625\u0646\u0641\u0627\u0631 INVAR<\/span> \u0639\u0646\u062f \u062a\u0633\u062e\u064a\u0646\u0647\u0627 \u0628\u0633\u0628\u0628 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u062a\u0645\u062f\u062f \u0627\u0644\u0639\u0627\u0644\u064a \u0644\u0644\u0646\u062d\u0627\u0633 \u0648\u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u062a\u0645\u062f\u062f \u0627\u0644\u0645\u0646\u062e\u0641\u0636 \u0644\u0644\u0625\u0646\u0641\u0627\u0631 INVAR<\/span> \u0648\u0647\u064a \u0639\u0628\u0627\u0631\u0629 \u0639\u0646 36\u066a \u0645\u0646 \u0635\u0644\u0628 \u0627\u0644\u0646\u064a\u0643\u0644. \u064a\u0632\u062f\u0627\u062f \u0627\u0644\u0625\u0646\u062b\u0646\u0627\u0621 \u0645\u0639 \u0632\u064a\u0627\u062f\u0629 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0648\u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0627 \u0627\u0644\u0625\u0646\u062b\u0646\u0627\u0621 \u0641\u064a \u062d\u062f \u0630\u0627\u062a\u0647 \u0644\u0625\u0643\u0645\u0627\u0644 \u062f\u0627\u0626\u0631\u0629 \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0648\u062a\u0634\u063a\u064a\u0644 \u0625\u0646\u0630\u0627\u0631 \u0639\u0646\u062f \u062f\u0631\u062c\u0627\u062a \u062d\u0631\u0627\u0631\u0629 \u0645\u062d\u062f\u062f\u0629 \u0648\u062b\u0627\u0628\u062a\u0629 . \u0648\u0645\u0639 \u0630\u0644\u0643 \u060c \u064a\u0645\u0643\u0646 \u0627\u0644\u0643\u0634\u0641 \u0639\u0646 \u0645\u0639\u062f\u0644 \u0627\u0631\u062a\u0641\u0627\u0639 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u062b\u0646\u064a\u0646 \u0645\u0646 \u0627\u0644\u0634\u0631\u0627\u0626\u062d \u0645\u0632\u062f\u0648\u062c\u0629 \u0627\u0644\u0645\u0639\u062f\u0646 (\u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u062a\u0627\u0644\u064a) \u0643\u0644 \u0645\u0646\u0647\u0645\u0627 \u0630\u0648 \u0633\u0645\u0643 \u0645\u062e\u062a\u0644\u0641 Different Thickness<\/span> . \u0648\u064a\u062a\u0645 \u062a\u062b\u0628\u064a\u062a\u0647\u0645\u0627 \u0645\u062a\u0648\u0627\u0632\u064a\u0627\u0646 \u0648\u0628\u062d\u064a\u062b \u064a\u062d\u062f\u062b \u0627\u0644\u0625\u0646\u062b\u0646\u0627\u0621 \u0641\u064a \u0646\u0641\u0633 \u0627\u0644\u0625\u062a\u062c\u0627\u0647 .<\/p>\n

\u0633\u0648\u0641 \u064a\u0624\u062f\u064a \u0627\u0644\u0627\u0631\u062a\u0641\u0627\u0639 \u0627\u0644\u0633\u0631\u064a\u0639 \u0641\u064a \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0625\u0644\u0649 \u0625\u0646\u062b\u0646\u0627\u0621 \u0627\u0644\u0639\u0646\u0635\u0631 \u0627\u0644\u0623\u0642\u0644 \u0633\u0645\u0643\u0627 \u0628\u0633\u0631\u0639\u0629 \u0623\u0643\u0628\u0631 \u0645\u0646 \u0627\u0644\u0622\u062e\u0631 \u060c \u0644\u0630\u0644\u0643 \u064a\u062a\u0633\u0628\u0628 \u0641\u064a \u062d\u062f\u0648\u062b \u0627\u062a\u0635\u0627\u0644 \u0628\u064a\u0646 \u0623\u0637\u0631\u0627\u0641 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 Contacts<\/span> \u0648\u0627\u0643\u062a\u0645\u0627\u0644 \u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0625\u0646\u0630\u0627\u0631. \u0628\u064a\u0646\u0645\u0627 \u064a\u0624\u062f\u064a \u0627\u0644\u0627\u0631\u062a\u0641\u0627\u0639 \u0627\u0644\u0628\u0637\u064a\u0621 \u0641\u064a \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0625\u0644\u0649 \u0627\u0646\u062d\u0631\u0627\u0641 \u0645\u0645\u0627\u062b\u0644 \u0641\u064a \u0643\u0644\u0627 \u0627\u0644\u0639\u0646\u0635\u0631\u064a\u0646 \u060c \u0628\u062d\u064a\u062b \u062a\u0633\u062a\u0645\u0631 \u0641\u062c\u0648\u0629 \u0628\u064a\u0646 \u0623\u0637\u0631\u0627\u0641 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 Contacts<\/span> .<\/p>\n

*<\/p>\n

\"\"<\/p>\n

*<\/p>\n

\u0645\u0635\u0637\u0644\u062d\u0627\u062a<\/span><\/h2>\n

\u0643\u0627\u0634\u0641 \u0627\u0644\u062d\u0631\u0627\u0631\u0629<\/p>\n

Heat Detector<\/p>\n

*<\/p>\n

\u0627\u0636\u063a\u0637 \u0647\u0646\u0627 \u0644\u062a\u062a\u0627\u0628\u0639 \u0635\u0641\u062d\u062a\u0646\u0627 \u0639\u0644\u064a \u0627\u0644\u0641\u064a\u0633 \u0628\u0648\u0643\u00a0\"\"<\/a><\/span><\/p>\n

***************************************************************<\/strong><\/span><\/p>\n

\"handwave-yellow\"<\/p>\n

\u0645\u0648\u0627\u0636\u064a\u0639 \u0630\u0627\u062a \u0635\u0644\u0629<\/strong><\/span><\/h3>\n

\u00a0.<\/h3>\n

\u0643\u0627\u0634\u0641 \u062e\u0644\u064a\u0637 \u062d\u0631\u0627\u0631\u0629 \u062b\u0627\u0628\u062a\u0629\/\u0645\u0639\u062f\u0644 \u0627\u0644\u0625\u0631\u062a\u0641\u0627\u0639 Combination RR\/FT Heat Detector<\/a><\/h3>\n

.<\/p>\n

\u0627\u0644\u0643\u0627\u0634\u0641 \u0627\u0644\u062e\u0637\u064a \u0644\u0644\u062d\u0631\u0627\u0631\u0629 Linear Heat Detector<\/a><\/h3>\n

.<\/p>\n

\u0623\u0646\u0648\u0627\u0639 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0643\u0634\u0641 \u0639\u0646 \u0627\u0644\u062d\u0631\u064a\u0642 \u0648\u0627\u0644\u063a\u0627\u0632 Types of F&G Detection Devices<\/a><\/h3>\n

.<\/p>\n

\u0646\u0638\u0627\u0645 \u0627\u0644\u0643\u0634\u0641 \u0627\u0644\u0645\u0628\u0643\u0631 \u062c\u062f\u0627\u064b \u0639\u0646 \u0627\u0644\u062f\u062e\u0627\u0646 VESDA<\/a><\/h3>\n

.<\/p>\n

\u0643\u0627\u0634\u0641\u0627\u062a \u0627\u0644\u062f\u062e\u0627\u0646 \u0627\u0644\u0645\u0641\u0631\u062f\u0629 Stand Alone Smoke Detectors<\/a><\/h3>\n

.<\/p>\n

\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u062d\u0648\u0644 \u0643\u0627\u0634\u0641 \u0627\u0644\u062f\u062e\u0627\u0646 \u0627\u0644\u0645\u0646\u0632\u0644\u064a<\/a><\/h3>\n

 <\/p>\n

\"handwave-yellow\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Bimetal strips made up from brass and INVAR will deflect when heated due to the high expansion coefficient of the brass and the low expansion coefficient of the INVAR, which is 36% nickel steel. Deflection increases with temperature and could in itself be used to complete an electrical circuit and operate an alarm at some […]<\/p>\n","protected":false},"author":2,"featured_media":3231,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[215,214],"_links":{"self":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/3230"}],"collection":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/comments?post=3230"}],"version-history":[{"count":1,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/3230\/revisions"}],"predecessor-version":[{"id":3232,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/3230\/revisions\/3232"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/media\/3231"}],"wp:attachment":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/media?parent=3230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/categories?post=3230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/tags?post=3230"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}