{"id":1349,"date":"2015-02-11T19:08:40","date_gmt":"2015-02-12T03:08:40","guid":{"rendered":"http:\/\/www.rbdinstruments.com\/blog\/?p=1349"},"modified":"2015-02-11T19:10:34","modified_gmt":"2015-02-12T03:10:34","slug":"25-110-analyzer-filament","status":"publish","type":"post","link":"https:\/\/www.rbdinstruments.com\/blog\/25-110-analyzer-filament\/","title":{"rendered":"25-110 Analyzer Filament"},"content":{"rendered":"

This is an old tech tip that I wrote back in 2002. The 25-110 analyzer was the first CMA that Physical Electronics used a Lab6 filament in. These days there are not a lot of 590 systems still in operation, but the ones that are still work well especially as depth profile instruments. RBD provides Lab6 filaments and repair services for the venerable 590 scanning auger systems and the 25-110 analyzer.<\/p>\n

General tips: <\/strong><\/p>\n

Use gloves.<\/p>\n

Clean and demagnetize all of your tools.<\/p>\n

Place all removed parts on a clean work area covered with aluminum foil<\/a>.<\/p>\n

If possible, dust off all parts with nitrogen as you re-assemble them.<\/p>\n

Never force any part that doesn’t want to go.<\/p>\n

Use methanol as a lubricant if screws don’t move easily.<\/p>\n

 <\/p>\n

To replace the filament in the 25-110 analyzer: <\/strong><\/p>\n

    \n
  1. Remove the magnetic shield (4 screws).<\/li>\n
  2. Carefully remove the conical ceramic ring (4 flat-head screws) and remove the conical ceramic.<\/li>\n
  3. Remove the outer cylinder (1 screw), being careful not to force it. If necessary, use a heat gun to loosen it up.<\/li>\n
  4. Separate all of the wires in the bottom of the analyzer using 2 needle-nose pliers or tweezers. Be careful not to stress the wires.<\/li>\n
  5. Position the wires so that you can easily remember where they belong. In the case of the F1 and F2 wires, this is easy. For the DELF\/STIG wires, position the wires as upper right and upper left, lower right and lower left.<\/li>\n
  6. Loosen the 4 spline set screws on the top of the inner cylinder by 1 turn CCW.<\/li>\n
  7. Remove all but one of the 8 screws around the middle of the inner cylinder.<\/li>\n
  8. Remove the upper inner cylinder grid cap (4 set screws).<\/li>\n
  9. Holding on to the nose of the electron gun, remove the final screw at the middle of the inner cylinder.<\/li>\n
  10. Carefully pull the electron gun up and out of the inner cylinder. Be careful not to stress any of the wire connectors.<\/li>\n
  11. Place the electron gun on a sheet of aluminum foil.<\/li>\n
  12. Loosen the bottom cap of the electron gun (4 screws and 4 set screws).<\/li>\n
  13. Carefully slide the bottom cap down the ceramics for about 2 inches, enough room to get at the filament.<\/li>\n
  14. Remove the filament assembly (4 cap screws, 2 splines connecting the filament wires).<\/li>\n
  15. Install the new filament assembly and reverse all of the above steps.<\/li>\n
  16. When you slide the electron gun ceramic tubes back down inside the analyzer be careful not to crimp the copper foil on the ceramics.\u00a0 Also make sure that you tighten the set screws to hold the copper foil in place. If the copper foils slides up the ceramic it may cause arcing in the electron gun.<\/li>\n<\/ol>\n

     <\/p>\n

     <\/p>\n

    This slideshow requires JavaScript.<\/p>

    <\/div>\n","protected":false},"excerpt":{"rendered":"

    This is an old tech tip that I wrote back in 2002. The 25-110 analyzer was the first CMA that Physical Electronics used a Lab6 filament in. These days there are not a lot of 590 systems still in operation, … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":1350,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[164],"tags":[171,98,53],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2015\/02\/Loosen-bottom-cap-set-screws.jpg?fit=640%2C480&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p2DEXo-lL","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":677,"url":"https:\/\/www.rbdinstruments.com\/blog\/lab6-filament-replacement-procedure\/","url_meta":{"origin":1349,"position":0},"title":"Lab6 filament replacement procedure","author":"Randy","date":"July 9, 2013","format":false,"excerpt":"This procedure shows the steps to replace the Lab6 filament in the 25-120A CMA used in the Physical Electronics 600 and 660 scanning auger systems. First, vent the system. Here is a link to a procedure on how to do that: 600_System_Up-to-air_Procedure Remove the filament cap on the top of\u2026","rel":"","context":"In "Operation and Calibration Procedures"","block_context":{"text":"Operation and Calibration Procedures","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/operation-and-calibration-procedures\/"},"img":{"alt_text":"tilt back filament housing","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/07\/tilt-filament-housing-back-on-hinge.jpg?fit=588%2C330&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":359,"url":"https:\/\/www.rbdinstruments.com\/blog\/lab6-filament-rejuvenation\/","url_meta":{"origin":1349,"position":1},"title":"LaB6 filament Rejuvenation","author":"Randy","date":"February 17, 2013","format":false,"excerpt":"Lanthanum hexaboride (LaB6 ) filaments provide a very stable emission of electron current in the hot cathode electron sources used in many scanning Auger electron spectrometers. However, this type of filament is susceptible to deactivation from vacuum contaminants such as fluorine. If your LaB6 filament becomes contaminated it may exhibit\u2026","rel":"","context":"In "Operation and Calibration Procedures"","block_context":{"text":"Operation and Calibration Procedures","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/operation-and-calibration-procedures\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/02\/Unstable-Auger-data.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/02\/Unstable-Auger-data.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/02\/Unstable-Auger-data.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":300,"url":"https:\/\/www.rbdinstruments.com\/blog\/phi-optics-repair-guidelines-2\/","url_meta":{"origin":1349,"position":2},"title":"PHI Optics Repair Guidelines","author":"Randy","date":"January 17, 2013","format":false,"excerpt":"This document contains information about optics repair methods, procedures and tricks that are useful when working on older PHI optics units such as cylindrical mirror analyzers, x-ray photoelectron spectrometers and sputter ion sources. General Optics Guidelines. Clean all tools with isopropanol or methanol and also degauss them if possible. Most\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/01\/10-155-electron-gun-detail.png?fit=619%2C568&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1521,"url":"https:\/\/www.rbdinstruments.com\/blog\/esca-analyzer-filament-procedure\/","url_meta":{"origin":1349,"position":3},"title":"ESCA Analyzer Filament Procedure","author":"Randy","date":"June 19, 2015","format":false,"excerpt":"ESCA Analyzer Filament Replacement\u00a0 Procedure This procedure details the step by step process to replace the tungsten filament in a PHI 25-250, 260 or 270 ESCA analyzer used on the older PHI 550, 560 and 570 ESCA systems. RBD Instruments provides this filament (the C75-010). Here is a link to\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2025\/03\/Analyzer-resistances.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2025\/03\/Analyzer-resistances.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2025\/03\/Analyzer-resistances.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":1452,"url":"https:\/\/www.rbdinstruments.com\/blog\/15-255g-filament-change-procedure\/","url_meta":{"origin":1349,"position":4},"title":"15-255G Filament Change Procedure","author":"Randy","date":"May 9, 2015","format":false,"excerpt":"This post explains how to replace the C75-010 tungsten filament used in the Physical Electronics 15-255G double pass CMA.\u00a0\u00a0\u00a0 Refer to the pictures below for more details.\u00a0 RBD Instruments provides the C75-010 filaments as well as any other parts that you may need for your 15-255G analyzer.\u00a0 We also offer\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"check-screw-distance","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2015\/05\/check-screw-distance.jpg?fit=486%2C324&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":707,"url":"https:\/\/www.rbdinstruments.com\/blog\/10-155-filament-replacement-procedure\/","url_meta":{"origin":1349,"position":5},"title":"10-155 Filament replacement procedure","author":"Randy","date":"July 22, 2013","format":false,"excerpt":"This blog post is an updated version of the 10-155 filament replacement procedure first published on the RBD Instruments website as a Technical Tip a number of years ago. This version has been updated with some close up pictures of the electron gun assembly shown at the bottom of this\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"filament-coupler-space-between","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/07\/filament-coupler-space.jpg?fit=972%2C648&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/07\/filament-coupler-space.jpg?fit=972%2C648&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/07\/filament-coupler-space.jpg?fit=972%2C648&ssl=1&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/1349"}],"collection":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/comments?post=1349"}],"version-history":[{"count":2,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/1349\/revisions"}],"predecessor-version":[{"id":1365,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/1349\/revisions\/1365"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/media\/1350"}],"wp:attachment":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/media?parent=1349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/categories?post=1349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/tags?post=1349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}