-----Original Message----- From: Ehler, Kyle [mailto:keh...@lsil.com] Sent: Monday, September 24, 2001 1:29 PM To: 'Dan Irish - Sun BOS Hardware'; emc-p...@majordomo.ieee.org Subject: RE: Steel ball for impact tests
What about calibration? Is a trailer ball NIST traceable? =:P As a 'CTDP' participant I have to maintain a cal list on all instruments I use in the course of my tests and include it with any test reports I ship to agencies. I had to get my certified 'sphere' calibrated recently. -Not that it changes much or is easily adjustable. It was not cheap for this paperwork turn on 'ol ironhead'. If'n you purchase a new sphere, you get a nice cal cert along with it. I would venture that your time making and cal'ing/correcting a trailer ball to spec and getting it cert is just as expensive. Regards, Kyle Ehler KCOIQE < mailto:kyle.eh...@lsil.com <mailto:kyle.eh...@lsil.com> > Assistant Design Engineer LSI Logic Storage Systems Div. 3718 N. Rock Road U.S.A. Wichita, Kansas 67226 Ph. 316 636 8657 Fax 316 636 8321 -----Original Message----- From: Dan Irish - Sun BOS Hardware [ mailto:dan.ir...@sun.com <mailto:dan.ir...@sun.com> ] Sent: Monday, September 24, 2001 10:22 AM To: emc-p...@majordomo.ieee.org Subject: RE: Steel ball for impact tests The cheapest way to go is to get a 2" trailer ball from WalMart and cut off the flange and threads with a hacksaw or Sawzall. File to a spherical shape. Drill and tap a hole for an eye bolt that can be installed for the pendulum test. About $10 US? Dan > From: "JENKINS, JEFF" <jeff.jenk...@aei.com> > To: "'Jon Jones'" <jon.jo...@ascom.co.uk>, "Emc-Pstc (E-mail)" <emc-p...@majordomo.ieee.org> > Subject: RE: Steel ball for impact tests > Date: Mon, 24 Sep 2001 08:33:20 -0600 > MIME-Version: 1.0 > X-Resent-To: Multiple Recipients <emc-p...@majordomo.ieee.org> > X-Listname: emc-pstc > X-Info: Help requests to emc-pstc-requ...@majordomo.ieee.org > X-Info: [Un]Subscribe requests to majord...@majordomo.ieee.org > X-Moderator-Address: emc-pstc-appro...@majordomo.ieee.org > > > Try: > > Ergonomics, Inc. > 1-800-862-0102 > ask for Eric George > e...@ergonomicsusa.com > www.ergonomicsusa.com > > Regards, > > Jeff Jenkins > Advanced Energy Industries, Inc. > Fort Collins, CO > > > -----Original Message----- > From: Jon Jones [ mailto:jon.jo...@ascom.co.uk <mailto:jon.jo...@ascom.co.uk> ] > Sent: Monday, September 24, 2001 7:00 AM > To: Emc-Pstc (E-mail) > Subject: Steel ball for impact tests > > > > > Can anyone detail a manufacturer / supplier who can supply the steel ball > for impact tests as per EN60950:2000 clause 4.2.5. (50mm diameter, 500g) > > Thanks in advance, > > > Jon Jones > > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ <http://www.ewh.ieee.org/soc/emcs/pstc/> > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old > messages are imported into the new server. > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ <http://www.ewh.ieee.org/soc/emcs/pstc/> > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old messages are imported into the new server. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ <http://www.ewh.ieee.org/soc/emcs/pstc/> To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server. Kyle: It seems to me that the ball is defined by diameter and weight, so all you need to do is put a caliper on it and then weigh it. But maybe there are some qualities that haven't been mentioned, such as surface hardness and alloy. OTOH, I would be inclined to establish a very long calibration interval, since I expect the ball's parameters are very stable Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Services Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis
