{"id":1767,"date":"2018-01-07T18:35:18","date_gmt":"2018-01-07T15:05:18","guid":{"rendered":"https:\/\/isatis-fa.com\/?p=1767"},"modified":"2022-02-05T09:02:44","modified_gmt":"2022-02-05T05:32:44","slug":"%d8%b3%d8%a7%d8%ae%d8%aa-%d8%aa%d8%b1%d9%85%d9%88%d9%88%d9%84","status":"publish","type":"post","link":"https:\/\/isatis-fa.com\/en\/%d8%b3%d8%a7%d8%ae%d8%aa-%d8%aa%d8%b1%d9%85%d9%88%d9%88%d9%84\/","title":{"rendered":"Thermowell Construction"},"content":{"rendered":"<h2><span style=\"font-size: 14px;\"><strong><span style=\"color: #000000;\">Eight Steps for Selecting and Ordering a Thermowell<\/span><\/strong><\/span><\/h2>\n<h2 class=\"translation-block\"><span style=\"color: #000000;font-size: 14px\">\nIsatis Farayand Abzar Company is a manufacturer of various types of<span lang=\"FA\">thermowells.<\/span> <span lang=\"FA\">This device is<\/span> <span lang=\"FA\">used to<\/span> <span lang=\"FA\">protect the temperature sensor against harsh and severe process conditions and to allow the sensor to be removed from its place without the need to stop the process. Although at first glance the thermowell may seem like a simple device, its proper selection requires determining multiple parameters.<\/span><\/span><\/h2>\n<h2 class=\"translation-block\"><span style=\"color: #000000;font-size: 14px\"><span lang=\"FA\">Parameters, each of which must be selected according to its characteristics, in order to achieve the goals of minimal adverse impact on measurement accuracy,<\/span> <span lang=\"FA\">minimal need for repair and maintenance, and consequently the reduction and elimination of risks arising from damage to the thermowell.<\/span><span style=\"font-family: Calibri\"><span lang=\"EN\">.<\/span><\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\"><span style=\"color: #000000; font-size: 14px;\"> 1 ) <span style=\"font-family: Calibri;\"><span lang=\"EN\">AND TYPE<\/span><\/span> <span style=\"font-family: Calibri;\"><span lang=\"EN\">PROCESS CONNECTION SIZE<\/span><\/span><span lang=\"FA\"> The thermowell can be connected to the pipeline using one of three methods: flanged, threaded, or welded. However, the connection of the temperature sensor to the thermowell is always threaded, and is selected according to the installation conditions.<\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\"><span style=\"color: #000000; font-size: 14px;\">2 ) <span style=\"font-family: Calibri;\"><span lang=\"EN\">U<\/span><\/span> <span style=\"font-family: Calibri;\"><span lang=\"EN\">LENGTH<\/span><\/span><span lang=\"FA\"> To select the appropriate length, first determine the minimum required length for the thermowell. This length is usually recommended by the temperature sensor manufacturer. <\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\" class=\"translation-block\"><span style=\"color: #000000;font-size: 14px\"><span lang=\"FA\">If the temperature sensor manufacturer does not provide a recommendation, API RP 550 standard states regarding the selection of thermowell length<\/span><span style=\"font-family: Calibri\"><span lang=\"EN\">API RP 550<\/span><\/span><span lang=\"FA\">that the thermowell should be chosen so that its tip is located in the middle third of the pipe, and the thermowell length should not be less than 2 inches.<\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\" class=\"translation-block\"><span style=\"color: #000000;font-size: 14px\">3 ) <span style=\"font-family: Calibri\"><span lang=\"EN\">T LENGTH<\/span><\/span><span lang=\"FA\"> :The distance between the connection to the system and the connection to the instrumentation device, which is standard at 3 inches (except for thermowells with length<\/span><span style=\"font-family: Calibri\"><span lang=\"EN\">length<\/span><\/span><span lang=\"FA\">=2 \u00bd\u201d <\/span><span style=\"font-family: Calibri\"><span lang=\"EN\">U<\/span><\/span><span lang=\"FA\">\u060c <\/span><span style=\"font-family: Calibri\"><span lang=\"EN\">T Length=2<\/span><\/span><span lang=\"FA\">\u201d)<\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\"><span style=\"color: #000000; font-size: 14px;\">4 ) <span style=\"font-family: Calibri;\"><span lang=\"EN\">SHANK CONFIGURATION<\/span><\/span><span lang=\"FA\"> Thermowells are manufactured in three types: straight, stepped, and tapered. They are selected based on the fact that each fixed thermowell has a different response time and different stress resistance. <\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\"><span style=\"color: #000000; font-size: 14px;\">5\u00a0)\u00a0stress analysis <\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\" class=\"translation-block\"><span style=\"color: #000000;font-size: 14px\">Based on the standard <span style=\"font-family: Calibri\"><span lang=\"EN\">ASME PTC 19.3 TW:2010<\/span><\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\"><span style=\"color: #000000; font-size: 14px;\">6 ) <span style=\"font-family: Calibri;\"><span lang=\"EN\">BORE<\/span><\/span><span lang=\"FA\"> The internal channel of the thermowell, or the so-called thermowell bore, is the place where the stem of the temperature sensor element is inserted. <\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\"><span style=\"color: #000000; font-size: 14px;\">7 ) <span style=\"font-family: Calibri;\"><span lang=\"EN\">MATERIAL<\/span><\/span><span lang=\"FA\"> The material of the thermowell is determined according to the characteristics of the process fluid. These characteristics include the fluid temperature, the oxidizing properties of the fluid, the presence of sulfur in the fluid, the resistance of the selected material against the pressure exerted by the fluid, resistance to abrasion, and some other factors. This company is capable of manufacturing in stainless steel 316 and 304. <\/span><\/span><\/h2>\n<h2 style=\"text-align: right;\" align=\"RIGHT\"><span style=\"color: #000000; font-size: 14px;\">8 ) <span style=\"font-family: Calibri;\"><span lang=\"EN\">INSTRUMENT INSERTION LENGTH<\/span><\/span><span lang=\"FA\"> The length from the beginning to the end of the thermowell, which is specified to match the length of the thermometer sensor.<\/span><\/span><\/h2>\n<div id=\"attachment_1768\" style=\"width: 581px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1768\" class=\"size-full wp-image-1768\" src=\"https:\/\/isatis-fa.com\/wp-content\/uploads\/2018\/01\/klmklm.png\" alt=\"\u0633\u0627\u062e\u062a \u062a\u0631\u0645\u0648\u0648\u0644\" width=\"571\" height=\"200\" srcset=\"https:\/\/isatis-fa.com\/wp-content\/uploads\/2018\/01\/klmklm.png 571w, https:\/\/isatis-fa.com\/wp-content\/uploads\/2018\/01\/klmklm-300x105.png 300w, https:\/\/isatis-fa.com\/wp-content\/uploads\/2018\/01\/klmklm-150x53.png 150w, https:\/\/isatis-fa.com\/wp-content\/uploads\/2018\/01\/klmklm-50x18.png 50w\" sizes=\"(max-width: 571px) 100vw, 571px\" \/><p id=\"caption-attachment-1768\" class=\"wp-caption-text\"><span style=\"font-size: 14px;\">Thermowell Construction<\/span><\/p><\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Isatis Process Tools manufactures various types of thermowells, which are used to protect temperature sensors from...<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>","protected":false},"author":2,"featured_media":3267,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"categories":[87],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.4 (Yoast SEO v22.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0633\u0627\u062e\u062a 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