{"id":1019,"date":"2026-09-06T21:00:08","date_gmt":"2026-09-06T13:00:08","guid":{"rendered":"https:\/\/ll-transmitter.com\/?post_type=product&#038;p=1019"},"modified":"2026-09-06T21:00:08","modified_gmt":"2026-09-06T13:00:08","slug":"siemens-c79451-a3462-b151-cover-window-assembly","status":"publish","type":"product","link":"https:\/\/ll-transmitter.com\/ar\/product\/siemens-c79451-a3462-b151-cover-window-assembly\/","title":{"rendered":"Siemens C79451\u2011A3462\u2011B151 Cover Window Assembly"},"content":{"rendered":"<p><span style=\"color: #000000;\"><strong>Siemens C79451\u2011A3462\u2011B151 Cover Window Assembly for ULTRAMAT 23 Gas Analyzer<\/strong><\/span><\/p>\n<h6><span style=\"color: #33cccc;\">Product Overview<\/span><\/h6>\n<hr \/>\n<p>This is Siemens C79451-A3462-B151cover window assembly, a critical mechanical spare component for ULTRAMAT 23 continuous gas-analysis unit. The unit integrates metal mounting flange, optical window and pre-installed green sealing O-ring. It seals the analyzer&#8217;s optical measuring chamber,shields internal optics from dust, moisture and process-gas pollution, and keeps stable light-path condition for gas<br \/>\nmeasurement.<\/p>\n<p><span style=\"color: #33cccc;\"><strong>Replacement Scenarios<\/strong><\/span><\/p>\n<hr \/>\n<p>Users swap in this assembly when the optical window gets scratched, fogged or corroded, or the original sealing ring ages and causes gas leakage. Technicians remove the damaged old part and mount this complete unit directly. Pre\u2011fitted O\u2011ring skips extra gasket work, you need no custom machining or modification during field installation.<\/p>\n<h6><span style=\"color: #33cccc;\">Technical Parameter<\/span><\/h6>\n<table>\n<thead>\n<tr>\n<th>Item<\/th>\n<th>Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Part Number<\/td>\n<td>C79451\u2011A3462\u2011B151<\/td>\n<\/tr>\n<tr>\n<td>Product Type<\/td>\n<td>Cover Window Assembly<\/td>\n<\/tr>\n<tr>\n<td>Compatible Unit<\/td>\n<td>Siemens ULTRAMAT 23 Gas Analyzer<\/td>\n<\/tr>\n<tr>\n<td>Structure<\/td>\n<td>Metal flange + optical window + pre\u2011installed green O\u2011ring<\/td>\n<\/tr>\n<tr>\n<td>Core Function<\/td>\n<td>Seal optical measuring chamber, prevent gas leakage &amp; contamination<\/td>\n<\/tr>\n<tr>\n<td>Installation<\/td>\n<td>Complete drop\u2011in replacement, no modification required<\/td>\n<\/tr>\n<tr>\n<td>Traceability<\/td>\n<td>Part\u2011number label on protective case<\/td>\n<\/tr>\n<tr>\n<td>Country of Origin<\/td>\n<td>France<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong><span style=\"color: #33cccc;\">Product physical display<\/span><\/strong><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-1020 alignnone\" src=\"https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-300x300.jpg\" alt=\"\" width=\"350\" height=\"350\" srcset=\"https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-300x300.jpg 300w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-1024x1024.jpg 1024w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-150x150.jpg 150w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-768x768.jpg 768w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-1536x1536.jpg 1536w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-2048x2048.jpg 2048w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-12x12.jpg 12w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-600x600.jpg 600w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-2-100x100.jpg 100w\" sizes=\"(max-width: 350px) 100vw, 350px\" \/> <img decoding=\"async\" class=\"wp-image-1021 alignnone\" src=\"https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-300x300.jpg\" alt=\"\" width=\"350\" height=\"350\" srcset=\"https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-300x300.jpg 300w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-1024x1024.jpg 1024w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-150x150.jpg 150w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-768x768.jpg 768w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-1536x1536.jpg 1536w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-2048x2048.jpg 2048w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-12x12.jpg 12w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-600x600.jpg 600w, https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/09\/Siemens-C79451\u2011A3462\u2011B151-Cover-Window-Assembly-3-100x100.jpg 100w\" sizes=\"(max-width: 350px) 100vw, 350px\" \/><\/p>\n<p>Tips: This cover window assembly comes as a complete kit with pre\u2011fitted sealing O\u2011ring for quick field installation. Service staff remove the defective old assembly and mount this unit directly. No additional gaskets or on\u2011site adjustment are needed, which saves plenty of servicing time.<br \/>\nField\u2011site plant technicians pick this spare part to eliminate gas\u2011leak risks for monitoring cabinets and process\u2011gas analysis stations. It fits preventive equipment maintenance, on\u2011site breakdown troubleshooting and complete instrument overhauls. Typical applications include combustion exhaust testing and stack continuous emission monitoring. In short, this is Siemens C79451\u2011A3462\u2011B151 cover window assembly, a key mechanical spare\u2011part for gas\u2011analysis instruments.<\/p>\n<p><strong><span style=\"color: #33cccc;\">\u2666We supply various Siemens spare\u2011parts with competitive pricing. Feel free to send your inquiry anytime.<\/span><\/strong><\/p>\n<p><strong><span style=\"color: #33cccc;\">Introduction of Xi \u2018an Lilu Trading Co., LTD<\/span><\/strong><br \/>\nXi \u2018an Lilu Trading Co., Ltd. is a professional import and export focus on transmitter, flow meter, positioner instrument industry provider. We have a huge advantage in the following brand ROSEMOUNT, YOKOGAWA, HONEYWELL, SMC, IMI NORGREN, ABB, ENDRESS + HAUSER, FISHER, YTC, AZBIL, SIEMENS, SCHNEIDER and some European brands.<br data-filtered=\"filtered\" \/>We look forward to your inquiry and hope that we can start the best cooperation.<\/p>\n<p>Phone: +86-18392971088<br data-filtered=\"filtered\" \/>Email:\u00a0<a href=\"mailto:inqury@lilutrading.com\" target=\"_blank\" rel=\"noopener\">inquiry@lilutrading.com<\/a><br \/>\n<style id=\"wpforms-css-vars-311\">\n\t\t\t\t#wpforms-311 {\n\t\t\t\t--wpforms-container-padding: 0px;\n--wpforms-container-border-width: 1px;\n--wpforms-container-border-radius: 3px;\n--wpforms-background-color: rgba(0, 0, 0, 0);\n--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 19px;\n--wpforms-field-size-padding-h: 14px;\n--wpforms-field-size-checkbox-size: 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\/>\nSiemens Spare\u2011Parts<br \/>\nPart Number: C79451\u2011A3462\u2011B151<br \/>\nBrand: Siemens<\/p>","protected":false},"featured_media":1020,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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