Ed, I put Fluxgate Magnetometer into my search engine, and it came up with http://home.t-online.de/home/mayer-dinslaken/flux.htm http://www.mines.edu/fs_home/tboyd/GP311/MODULES/MAG/NOTES/fluxgate. html http://www.magnetometer.com/
They come with no recommendation, but looked interesting. Some of the hand compasses with viewfinder sights may have a suitable resolution but probably lack calibration data. Long live weird science. Regards Geoff [email protected] Senior Engineer Motion Media Technology Ltd., Horton Hall, Horton, Bristol, BS37 6QN, UK Direct: +44 (0) 1454 338561 ISDN: +44 (0) 1454 338554 Switchboard: +44 (0) 1454 313444 Fax: +44 (0) 1454 313678 On Thursday, September 30, 1999 6:50 PM, Price, Ed [SMTP:[email protected]] wrote: > > Hi Listmembers: > > Today's weird science question is about sensing the strength of a > permanent > magnetic field. > > I need to expose an electronics box to a strong magnetic field (10 > Gauss). > Then, after removing the field, I need to approach the box with a > "compass" > and note the separation distance needed to deflect the compass needle > a > couple of degrees. A couple of degrees is pretty hard to read, even on > a > large compass! > > The purpose of the test is to make sure that objects exposed to > temporary > magnetic fields do not retain enough field to disrupt a nearby > magnetic > compass. > > I am trying to determine what kind of sensor I can use. I have been > looking > at electronic compass modules. Some models provide a DC analog output > voltage proportional to angle or heading. Has anyone tried this > method? Are > the modules stable enough for this to work? Is there a big problem > with the > placement of the data output lines? > > Thanks, > > Ed > > > :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-): > :-):-) > Ed Price > [email protected] > Electromagnetic Compatibility Lab > Cubic Defense Systems > San Diego, CA. USA > 619-505-2780 (Voice) > 619-505-1502 (Fax) > Military & Avionics EMC Services Is Our Specialty > Shake-Bake-Shock - Metrology - Reliability Analysis > :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-): > :-):-) > > > --------- > This message is coming from the emc-pstc discussion list. > To cancel your subscription, send mail to [email protected] > with the single line: "unsubscribe emc-pstc" (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
