In the MKS system of units, also known as SI(International System), 1 Tesla = 1 Weber per square meter. Relating it to more usual units, 1 T = 10,000 Gauss, which was the unit in the older cgs measurement system.
The equation defining the relationship between magnetic field and the currents which cause them is B = uH, where B is the magnetic induction field in Tesla or Wb/m^2, H is the magnetic field in Amperes per meter, and u (actually Greek letter mu) is the permeability of the medium, which is the relative permeability of the medium (a dimensionless number) multiplied by the permeability of free space or non-magnetic materials which in the MKS system is 4*pi* 1e-7 Henries per meter. Hope that's all perfectly clear... on 2/7/02 5:21 PM, marti...@appliedbiosystems.com at marti...@appliedbiosystems.com wrote: > > We have a customer that is concerned about how our product, laboratory > equipment, will respond to electromagnetic disturbances from a high speed > train that runs close to their lab. The customer states that the > disturbance will be around 0.7-1.2 m Teslar. > > Can someone please explain what the unit Teslar is and how that unit > relates, or if it relates, to the immunity tests of EN 61000-4-3 Radiated > immunity, or any other immunity test. > > Has anyone ever had a similar concern from a customer dealing with this > type of disturbance? > > Your responses are appreciated. > > Regards > > Joe Martin > EMC/Product Safety Engineer > Applied Biosystems > marti...@appliedbiosystems.com > > > > > ------------------------------------------- > 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/ > > 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: > Ron Pickard: emc-p...@hypercom.com > 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: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > -- Ken Javor EMC Compliance Huntsville, Alabama 256/650-5261 ------------------------------------------- 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/ 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: Ron Pickard: emc-p...@hypercom.com 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: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
