{"id":12155,"date":"2016-06-16T16:44:19","date_gmt":"2016-06-16T14:44:19","guid":{"rendered":"https:\/\/www.parrinst.com\/de\/?page_id=12155"},"modified":"2021-09-24T14:52:41","modified_gmt":"2021-09-24T19:52:41","slug":"apparatus-determining-rate-pressure-change-starter-compositions","status":"publish","type":"page","link":"https:\/\/www.parrinst.com\/de\/products\/specialty-custom-systems\/apparatus-determining-rate-pressure-change-starter-compositions\/","title":{"rendered":"Apparatus for Determining the Rate of Pressure Change for Starter Compositions"},"content":{"rendered":"\n\t\t\t<div id='12155-1' class='gallery gallery-12155 gallery-columns-3 gallery-size-medium' itemscope itemtype='http:\/\/schema.org\/ImageGallery'>\n\t\t\t\t<div class='gallery-row gallery-col-3 gallery-clear'>\n\t\t\t\t\t<figure class='gallery-item col-3' itemprop='associatedMedia' itemscope itemtype='http:\/\/schema.org\/ImageObject'>\n\t\t\t\t\t\t<div class='gallery-icon landscape'><a href=\"https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-01_no_background.jpg?ssl=1\" itemprop=\"contentURL\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-01_no_background.jpg?fit=300%2C300&amp;ssl=1\" class=\"attachment-medium size-medium\" alt=\"Apparatus for Determining the Rate of Pressure Change for Starter Compositions\" srcset=\"https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-01_no_background.jpg?w=1000&amp;ssl=1 1000w, https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-01_no_background.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-01_no_background.jpg?resize=150%2C150&amp;ssl=1 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" itemprop=\"thumbnail\" \/><\/a><\/div>\n\t\t\t\t\t<\/figure>\n\t\t\t\t\t<figure class='gallery-item col-3' itemprop='associatedMedia' itemscope itemtype='http:\/\/schema.org\/ImageObject'>\n\t\t\t\t\t\t<div class='gallery-icon landscape'><a href=\"https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-02_2.jpg?ssl=1\" itemprop=\"contentURL\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-02_2.jpg?fit=300%2C300&amp;ssl=1\" class=\"attachment-medium size-medium\" alt=\"Head and Sample Holder\" srcset=\"https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-02_2.jpg?w=600&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-02_2.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.parrinst.com\/de\/wp-content\/uploads\/sites\/6\/2021\/09\/QW16243-02_2.jpg?resize=150%2C150&amp;ssl=1 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" itemprop=\"thumbnail\" \/><\/a><\/div>\n\t\t\t\t\t<\/figure>\n\t\t\t<\/div>\n\t\t\t<\/div><!-- .gallery -->\n\n<p>This apparatus is used to study the burning characteristics of fuel-rich compositions such as lead dioxide-cupric oxide-silicon starter mix systems and related delay mixtures. Starter compositions are used to initiate a variety of pyrotechnic systems, for example flame and smoke markers. Factors that determine the behavior and predictability of the system are defined and investigated by calorimetry, pressure-time curve studies and other techniques. The burning characteristics are used to ensure optimum performance of the starter composition.<\/p>\n<p>The apparatus consists of a vessel equipped with a 500 psig pressure transducer. The vessel has a 90 ml working volume when loaded with a sample holder containing 12 grams of sample. The stainless steel sample holder is one inch high by 1.75 inches OD with a wall and bottom thickness of 0.125 inch. Ignition of the sample is by means of a Parr 2901 ignition unit which heats a 10 cm length of Parr 45C10 ignition wire to incandescence. The wire just touches the center of the sample. Changes of pressure are recorded on a computer via a USB interface at speeds up to 1000 readings per second.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This apparatus is used to study the burning characteristics of fuel-rich compositions such as lead dioxide-cupric oxide-silicon starter mix systems and related delay mixtures. Starter compositions are used to initiate a variety of pyrotechnic systems, for example flame and smoke markers. Factors that determine the behavior and predictability of the system are defined and investigated [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":36913,"parent":81,"menu_order":140,"comment_status":"closed","ping_status":"closed","template":"product-narrow.php","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-12155","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Apparatus for Determining the Rate of Pressure Change for Starter Compositions - Parr Instrument GmbH<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.parrinst.com\/de\/products\/specialty-custom-systems\/apparatus-determining-rate-pressure-change-starter-compositions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Apparatus for Determining the Rate of Pressure Change for Starter Compositions - Parr Instrument GmbH\" \/>\n<meta property=\"og:description\" content=\"This apparatus is used to study the burning characteristics of fuel-rich compositions such as lead dioxide-cupric oxide-silicon starter mix systems and related delay mixtures. Starter compositions are used to initiate a variety of pyrotechnic systems, for example flame and smoke markers. 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