{"id":519,"date":"2012-08-07T10:12:25","date_gmt":"2012-08-07T17:12:25","guid":{"rendered":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/?p=519"},"modified":"2012-08-07T10:12:25","modified_gmt":"2012-08-07T17:12:25","slug":"important-please-read-av500-vt-update","status":"publish","type":"post","link":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/2012\/08\/important-please-read-av500-vt-update\/","title":{"rendered":"IMPORTANT &#8211; PLEASE READ : AV500 VT UPDATE"},"content":{"rendered":"<p>We had several requests to explore increasing the high temperature limit on the instrument.\u00a0 This needed rather careful testing, without which we could precipitate a catastrophic quench of the magnet.\u00a0 On the AV500 system, such a test was completed recently.\u00a0 We have concluded that, for experiments that need to run for more than a few hours, <strong>a maximum sample temperature of +70 C<\/strong> is allowable.\u00a0 This temperature can be maintained without affecting the magnet system, using an active cooling of the magnet bore.\u00a0 A temporary but usable jig is already in place to achieve this.\u00a0 The absolute maximum mentioned for the probe and shim stack by Bruker is +80 C for <strong>short term experiments only (a maximum of 1 hour).\u00a0 If there is a need for reaching temperatures between +70 C and +80 C, <\/strong><strong>you should take the active help of facility staff <\/strong><strong>so that the system can be monitored while the experiment is underway at these temperatures. <\/strong><\/p>\n<p>Tests are in progress on other relevant systems to determine the maximum VT limit. You will be alerted about the results of the same in due course.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We had several requests to explore increasing the high temperature limit on the instrument.\u00a0 This needed rather careful testing, without which we could precipitate a catastrophic quench of the magnet.\u00a0 On the AV500 system, such a test was completed recently.\u00a0 We have concluded that, for experiments that need to run for more than a few [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[10,9,7],"tags":[],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/posts\/519"}],"collection":[{"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/comments?post=519"}],"version-history":[{"count":4,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/posts\/519\/revisions"}],"predecessor-version":[{"id":523,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/posts\/519\/revisions\/523"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/media?parent=519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/categories?post=519"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/tags?post=519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}