{"id":530,"date":"2026-08-23T13:41:19","date_gmt":"2026-08-23T05:41:19","guid":{"rendered":"https:\/\/www.kolitai.com\/?p=530"},"modified":"2026-08-23T13:41:19","modified_gmt":"2026-08-23T05:41:19","slug":"ke-a57-ultra-low-temperature-thermal-expansion-coefficient-tester","status":"publish","type":"post","link":"https:\/\/www.kolitai.com\/?p=530","title":{"rendered":"KE\u2011A57 Ultra\u2011low Temperature Thermal Expansion Coefficient Tester"},"content":{"rendered":"\n

Product Introduction<\/h3>\n\n\n\n

This instrument conducts low\u2011temperature linear thermal expansion coefficient test in accordance with GJB1875\u201194 Test Methods for Thermophysical Properties of Rigid Foam Plastics<\/em>. It is used to measure the mean linear thermal expansion coefficient of various solid materials under ultra\u2011low temperature. The push\u2011rod method is adopted. Imported high\u2011precision micrometric sensor detects specimen deformation at different temperatures. Computer technology realizes automatic detection, control, calculation, printing and data storage.<\/p>\n\n\n\n

Technical Parameters<\/h3>\n\n\n\n
    \n
  1. Temperature range: \u2011196\u202f\u2103 (liquid\u2011nitrogen immersion temperature) ~ 300\u202f\u2103<\/li>\n\n\n\n
  2. Specimen dimension: less than 20\u00d720\u00d750\u202fmm; 3 specimens can be tested simultaneously<\/li>\n\n\n\n
  3. High\u2011precision micrometric sensor for specimen deformation detection at different temperatures. Measuring range\uff1e15\u202fmm, resolution 0.1\u202f\u03bcm, accuracy 0.2\u202f\u03bcm<\/li>\n\n\n\n
  4. Measuring range of mean linear thermal expansion coefficient: 0.001 ~ 300.000\u00d710\u207b\u2076\/\u2103<\/li>\n\n\n\n
  5. Test accuracy: 0.2\u202f%<\/li>\n\n\n\n
  6. High\u2011precision high\u2011low temperature chamber with automatic temperature control and automatic data acquisition A: Temperature gradient: 1\u202f\u2103 B: Temperature fluctuation: \u2264\u00b11\u202f\u2103 C: Temperature deviation: \u2264\u00b11\u202f\u2103 D: Temperature\u2011controller display accuracy: \u22640.1\u202f\u2103 E: Refrigeration: liquid nitrogen; Heating: heating tube F: Chamber dimension (depth \u00d7 width \u00d7 height, mm): 300\u00d7350\u00d7500 G: Chamber air circulation: Centrifugal\u2011fan forced circulation H: During heating (positive set\u2011temperature): temperature shall not exceed set value by more than 1\u202f\u2103; During cooling (negative set\u2011temperature): temperature shall not go below set value by more than \u20111\u202f\u2103 I: Heating\u2011up time: within 60\u202fmin from 0\u202f\u2103 to +300\u202f\u2103; Cooling\u2011down time: within 40\u202fmin from 0\u202f\u2103 to \u2011190\u202f\u2103<\/li>\n\n\n\n
  7. The computer can collect and control three\u2011channel samples simultaneously. Partial channels can be disabled. Sample information can be input separately for real\u2011time data calculation, display of thermal\u2011expansion coefficient, volumetric expansion coefficient, linear expansion value and quench\u2011cooling expansion. Automatic calculation & compensation of compensation coefficient, manual on\u2011line correction available. Automatic data recording & storage (file name includes sample information), data printing and temperature\u2011thermal\u2011expansion\u2011coefficient curve printing. Freely\u2011configurable temperature interval with minimum interval of 1\u202f\u2103<\/li>\n\n\n\n
  8. Rated power supply: 220\u202fV, 4\u202fkW<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

    Product Introduction This instrument conducts low\u2011tempe […]<\/p>\n","protected":false},"author":1,"featured_media":531,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-530","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thermal-conductivity-tester"],"_links":{"self":[{"href":"https:\/\/www.kolitai.com\/index.php?rest_route=\/wp\/v2\/posts\/530","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kolitai.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kolitai.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kolitai.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kolitai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=530"}],"version-history":[{"count":1,"href":"https:\/\/www.kolitai.com\/index.php?rest_route=\/wp\/v2\/posts\/530\/revisions"}],"predecessor-version":[{"id":532,"href":"https:\/\/www.kolitai.com\/index.php?rest_route=\/wp\/v2\/posts\/530\/revisions\/532"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kolitai.com\/index.php?rest_route=\/wp\/v2\/media\/531"}],"wp:attachment":[{"href":"https:\/\/www.kolitai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kolitai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kolitai.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}