ID pit sizing

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ID pit sizing
Posted by: Theodoros Theodoulidis (PID_448), E-mail: theodoul@hellasnet.gr, on June 20, 2000 at 19:10 :
I am looking for updated information about sizing of ID pits with eddy currents in heat exchanger tubing.
I have seen a report referring to a reverse frequency mix of two frequencies. This is an artificial way of enhancing the 40 degrees angle between the wobble signal and the holes signal and is supposed to increase the above angle to 90 degrees. Does anyone know what exactly is reverse mix?
Thank you in advance

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Re: ID pit sizing James Doyle 22:19 7/21/2000 (1)

Re: ID pit sizing John Hansen 14:01 8/09/2000 (0)

Re: ID pit sizing Richard D. Roberts 00:52 6/24/2000 (0)

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: I am looking for updated information about sizing of ID pits with eddy currents in heat exchanger tubing. : I have seen a report referring to a reverse frequency mix of two frequencies. This is an artificial way of enhancing the 40 degrees angle between the wobble signal and the holes signal and is supposed to increase the above angle to 90 degrees. Does anyone know what exactly is reverse mix? : Thank you in advance

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